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Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

MEMBRANES (2023)

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Article Chemistry, Applied

Novel LaFe2O4 spinel structure with a large oxygen reduction response towards protonic ceramic fuel cell cathode

Jinping Wang et al.

Summary: A novel spinel-structured LaFe2O4 demonstrated high ORR electro-catalytic activity through a self-doping strategy. It showed excellent ORR activity in a PCFC at temperatures ranging from 350 to 500 degrees C. The high activity was attributed to the easy release of oxide and proton ions and improved synergistic incorporation abilities of multivalent Fe3+/Fe2+ and La3+ ions. A fuel cell using LaFe2O4 as a cathode achieved a high-power density of 806 mW/cm2 at 500 degrees C. Spectroscopic and calculations methods were used to screen the potential application of LaFe2O4 as a cathode material.

JOURNAL OF RARE EARTHS (2023)

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Review Energy & Fuels

Mixed matrix membranes for H2/CO2 gas separation- a critical review

Fayez Nasir Al-Rowaili et al.

Summary: Membrane technology plays a significant role in the separation processes of modern industries, especially in gas separation. Mixed matrix membranes (MMMs) have been widely studied and applied to improve the gas separation performance. This paper reviews the choice of advanced materials, recent research developments, and applications of MMMs in gas separation, with a focus on H2/CO2.

FUEL (2023)

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Review Chemistry, Physical

Liquid biofuels for solid oxide fuel cells: A review

Nanqi Li et al.

Summary: Liquid biofuels, as renewable and sulfur-free energy supplements, are favored by solid oxide fuel cells for their high efficiency and clean emissions. Direct and indirect utilizations are important for short-chain and long-chain liquid biofuels, respectively. However, the overall summary of their usage, including SOFC technologies and reforming processes, is currently messy and incomplete.

JOURNAL OF POWER SOURCES (2023)

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Article Nanoscience & Nanotechnology

Surface oxygen exchange kinetics of mixed conducting oxides: Dilatometric vs electrical conductivity relaxation study

Han Gil Seo et al.

Summary: The surface oxygen exchange kinetics of mixed ionic-electronic conducting (MIEC) oxides have important implications in various applications. Different methods have been used to measure the oxygen exchange coefficient, each with its advantages and limitations. The study demonstrates the precise measurement of the surface oxygen exchange coefficient of a model MIEC material using dilatometric relaxation measurements, particularly beneficial for materials with larger chemical expansion coefficients. This provides an opportunity to investigate the oxygen exchange and chemical expansion kinetics of various materials used in high-temperature applications with accuracy, especially in cases where conventional methods are not suitable.

SCRIPTA MATERIALIA (2023)

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Article Engineering, Chemical

Investigation of CO2 Splitting on Ceria-Based Redox Materials for Low-Temperature Solar Thermochemical Cycling with Oxygen Isotope Exchange Experiments

Daniel Uxa et al.

Summary: This study investigates the oxygen isotope exchange on ceria-based materials for the solar thermochemical splitting of carbon dioxide. Experimental results show that trivalent-doped ceria with Sm yields promising results in terms of CO2 splitting at lower temperatures. Zr-doped ceria, on the other hand, exhibits negative effects on surface exchange and oxygen diffusion.

PROCESSES (2023)

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Article Chemistry, Physical

Enhancement of surface exchange and oxygen diffusion of Sr1.95Fe1.4Ni0.1Mo0.5O6-d oxide determined by two independent isotope exchange methods

N. M. Porotnikova et al.

Summary: The interaction mechanism between gaseous oxygen and Sr1.95Fe1.4Ni0.1Mo0.5O6-delta, a promising material for SOFC cathodes, was investigated using two isotopic methods. The results provided a better understanding of the processes and brought the experimental conditions closer to real operating conditions. The concentration of labeled oxygen and various kinetic parameters were calculated, showing good agreement between the two methods. The effects of modifying the material by introducing deficiency and doping were also discussed.

APPLIED SURFACE SCIENCE (2023)

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Review Green & Sustainable Science & Technology

Exergy analysis of thermal desalination processes: a review

Z. Rahimi-Ahar et al.

Summary: This study explores the improvements in thermal desalination systems, with a focus on exergy. The research suggests that efforts should be made to minimize exergy destruction in order to enhance the overall efficiency of standalone systems. The integration of different desalination technologies and optimization of various factors can increase the exergy efficiency of a desalination plant.

CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY (2023)

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Article Chemistry, Applied

Nanomaterials with oxygen mobility for catalysts of biofuels transformation into syngas, SOFC and oxygen/hydrogen separation membranes: Design and performance

V. Sadykov et al.

Summary: Modern hydrogen energy technologies require stable, efficient, and inexpensive catalysts, permselective membranes, and SOFC cathode and anode materials for the production of green energy. This review focuses on the design of materials based on complex oxides with fluorite, perovskite, and spinel structures, and their characterization of oxygen mobility using temperature-programmed oxygen heteroexchange. The optimized materials showed stable and efficient performance in catalytic reactors, membranes, and solid oxide fuel cells.

CATALYSIS TODAY (2023)

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Review Energy & Fuels

Theoretical and Experimental Studies of Combined Heat and Power Systems with SOFCs

Iliya Krastev Iliev et al.

Summary: The article discusses experimental layout design solutions and operation schemes of combined heat and power systems with high-temperature solid oxide fuel cells (SOFC). The use of high-temperature SOFCs can achieve an electrical efficiency of 45-55%. The article also discusses the factors involved in designing a hybrid power plant and presents existing technological schemes. The study highlights the need for further research on the relationship between the components of a combined heat and power system in order to achieve the high efficiency indicators obtained from theoretical studies.

ENERGIES (2023)

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Article Energy & Fuels

Integrating Hydrokinetic Energy into Hybrid Renewable Energy System: Optimal Design and Comparative Analysis

Gbalimene Richard Ileberi et al.

Summary: Renewable energy resources and energy efficiency measures are effective ways to reduce CO2 emissions. This study investigates the potential of designing a hybrid system that incorporates hydrokinetic energy into an off-grid area. By applying a genetic algorithm to a small community in Nigeria, an optimal micro-grid configuration with PV panels, batteries, hydrokinetic turbines, converter, and a diesel generator is determined.

ENERGIES (2023)

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Review Energy & Fuels

Toward High Performance Mixed Ionic and Electronic Conducting Perovskite-Based Oxygen Permeable Membranes: An Overview of Strategies and Rationales

Jing Zhao et al.

Summary: Ceramic oxygen-permeable membranes (OPMs) with high selectivity for oxygen permeation have attracted significant attention in various fields. Current focus is on exploring mixed ionic and electronic conducting (MIEC) perovskite oxides OPMs, but their oxygen permeability and stability need improvement. This review discusses modification strategies for MIEC OPMs, including surface modification, composition modification, and configuration design, providing insights into the working principle and potential applications of OPMs.

ENERGY & FUELS (2023)

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Article Chemistry, Physical

Comprehensive review on integration strategies and numerical modeling of fuel cell hybrid system for power & heat production

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2023)

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Article Green & Sustainable Science & Technology

Global trends, performance metrics, and energy reduction measures in datacom facilities

Amin Isazadeh et al.

Summary: In the past decade, the demand for data center and network services has significantly increased. Technological advancements have led to a rise in global average rack power density and a decrease in Average Power Usage Effectiveness (PUE). The industry is moving towards more energy-efficient and sustainable technologies to address issues such as fossil fuel depletion, greenhouse gas emissions, electronic waste, and rising energy costs. These technologies include the use of renewable energy, efficient cooling systems, waste heat recovery, passive cooling, and energy storage.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2023)

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Article Chemistry, Physical

Vibrational characterization of the various forms of (solvated or unsolvated) mobile proton in the solid state. Advantages, limitations and open questions

Philippe Colomban

Summary: A didactic review of vibrational spectroscopy procedures for studying mobile protonic species in solid hydrates, crystals and ceramics is proposed. Representative examples of materials are given, and the advantages of isotopic substitution and dilution measurements are discussed. The vibrational signatures of different proton species and the characterization of protonic species without or with weak vibrational signatures are presented. The presence of a strong incoherent inelastic neutron scattering background appears to be characteristic of proton conductors.

SOLID STATE IONICS (2023)

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Article Materials Science, Multidisciplinary

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Tyler C. Salrin et al.

Summary: Haven and Verkerk studied the diffusion of ions in ionic conductive glasses with and without an external electric field. They introduced the concept known as Haven's ratio (H-R), which is the ratio of the tracer diffusion coefficient of ions to the diffusion coefficient from steady-state ionic conductivity. Molecular dynamics (MD) was used to measure the mean squared displacement of diffusing cations and calculate the diffusion coefficient. Results showed that the electric field introduced new mechanisms for ion diffusion, and MD can be a powerful tool for studying ionic diffusion in glasses under external electric fields.

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Summary: The integration of waste-to-energy conversion with other renewable energy processes is a key strategy for waste disposal and reducing reliance on fossil fuels. Proper system configurations are crucial for sustainable power generation. Comparative analysis of hybrid systems is lacking in existing literature.

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MEMBRANES (2023)

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Article Biochemistry & Molecular Biology

Sintering Aid Strategy for Promoting Oxygen Reduction Reaction on High-Performance Double-Layer LaNi0.6Fe0.4O3-d Composite Electrode for Devices Based on Solid-State Membranes

Denis Osinkin et al.

Summary: Strontium and cobalt-free LaNi0.6Fe0.4O3-d is a promising electrode for solid-state electrochemical devices, with high electrical conductivity, suitable thermal expansion coefficient, tolerance to chromium poisoning, and chemical compatibility with zirconia-based electrolytes. However, its disadvantage is the low oxygen-ion conductivity. To increase the conductivity, a complex oxide based on doped ceria is added, which decreases the electrode's conductivity. Therefore, a two-layer electrode with sintering additives is recommended.

MEMBRANES (2023)

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Review Materials Science, Ceramics

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Lakshya Mathur et al.

Summary: Electrolyte supported fuel cells (ESCs) have gained rapid popularity as an energy conversion technology due to their scalability and low production cost. However, ESCs face higher ohmic losses compared to other fuel cells due to the thickness of the electrolyte used. Various attempts have been made to address this issue, including the use of different electrolyte materials and minimizing the electrolyte thickness. This review summarizes the progress made over the past four decades and discusses the fundamental aspects of ESCs.

JOURNAL OF THE KOREAN CERAMIC SOCIETY (2023)

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Article Electrochemistry

Lanthanide nickelates for their application on Solid Oxide Cells

M. A. Morales-Zapata et al.

Summary: High-temperature technologies like solid oxide cells (SOC) are being used for power-to-fuel and vice versa conversion, but durability and compatibility issues at high temperatures are still being addressed. Thus, there is a growing focus on optimizing the physical, mechanical, and chemical properties of SOC materials at lower temperatures. Finding suitable air electrodes remains a significant challenge. Lanthanide nickelates with Ruddlesden-Popper (RP) and perovskite structures are emerging alternatives due to their fast ion and electron transport, as well as flexible oxygen stoichiometry. This review aims to document the research and development status of RP nickelate air electrodes and compare their electrochemical performance.

ELECTROCHIMICA ACTA (2023)

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Review Energy & Fuels

Renewable Energy and Energy Storage Systems

Enas Taha Sayed et al.

Summary: The use of fossil fuels has caused climate change, making renewable and ecologically friendly alternatives necessary. Renewable energy sources, such as solar, wind, and biomass energies, have made significant progress in terms of price and commercial viability. Further work is needed to enhance the capacity of renewable energy sources, particularly in terms of dispatchability and energy storage. Additionally, hybrid renewable energy systems and effective energy management are crucial for balancing production, consumption, and storage. The article also discusses recent advancements in green hydrogen production and fuel cells, offering potential for wider commercial use of renewable energy.

ENERGIES (2023)

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Review Energy & Fuels

Comprehensive Analysis of Solid Oxide Fuel Cell Performance Degradation Mechanism, Prediction, and Optimization Studies

Jingxuan Peng et al.

Summary: Solid oxide fuel cell (SOFC) performance degradation analysis and optimization studies are important for commercialization. Reviewing and summarizing SOFC performance degradation studies can help identify research gaps and increase investment. This study sorts out degradation mechanism analysis, performance prediction, and optimization studies to improve system performance.

ENERGIES (2023)

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Review Thermodynamics

Readiness evaluation of SOFC-MGT hybrid systems with carbon capture for distributed combined heat and power

Victoria He et al.

Summary: The urgency of climate change requires the development of efficient and renewable energy solutions. Solid oxide fuel cells (SOFC) show promise as they can generate electricity and heat from various fuels. This study explores the integration of SOFC with Brayton cycles via micro gas turbines (MGT) for a small-scale energy system. An integrative literature review examines different integration strategies, leading to the identification of a hybrid system using an inverted Brayton cycle and oxy-combustion. This system has the potential to achieve high efficiency with less complexity and ease of carbon capture.

ENERGY CONVERSION AND MANAGEMENT (2023)

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Article Chemistry, Physical

Assessment of the Y-doped Ca3Co4O9 thorn d as cathode material for proton-conducting fuel cells

A. Urusova et al.

Summary: This study investigates the functional properties of yttrium-doped Ca3Co4O9+3 complex oxides as potential cathode materials for proton-conducting fuel cells. The phase equilibria in the 1/2Y2O3-CaO-1/3Co3O4 system at 900℃ in air has been experimentally observed. The misfit-layered structure of Ca3-kYkCo4O9+3 solid solutions and their chemical compatibility with proton-conducting electrolytes have been established.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2023)

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Article Chemistry, Inorganic & Nuclear

Effect of A-site cation ordering on oxygen diffusion in NdBa2Fe3O8 through molecular dynamics

Milad Moazzam et al.

Summary: RE1+xBa2-xFe3O8+& delta; (RE = Pr, Nd, Sm, ...) compounds have been proposed as potential electrode materials for Solid Oxide Fuel Cells. The structure of these materials can vary, including a disordered cubic perovskite phase, an ordered quintuple perovskite phase, or a mixture of both. In this study, molecular dynamics simulations were performed to investigate the influence of ordering on the diffusion of oxygen ions. The results showed that nano-ordering slightly improved oxygen diffusion compared to the fully ordered structure, but the diffusion coefficient was still much smaller than that of the disordered structure.

JOURNAL OF SOLID STATE CHEMISTRY (2023)

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Review Engineering, Mechanical

Review of fuel cell technologies and evaluation of their potential and challenges for electrified propulsion systems in commercial aviation

Stefan Kazula et al.

Summary: This paper provides an overview of various types of fuel cells for commercial electrified aviation and identifies the most promising options. It describes the design, operating principles, and characteristics of different fuel cells such as polymer electrolyte membrane, alkaline, direct methanol, phosphoric acid, molten carbonate, and solid oxide fuel cells. The evaluation criteria are derived from aviation-specific requirements, and a weighted point rating is used to assess the presented fuel cell types. The evaluation reveals that solid oxide, low-temperature, and high-temperature polymer electrolyte membrane fuel cells have high potential for application. The challenges in design for all fuel cell types, such as cold start, cooling, and supply of pressurized air, are emphasized.

JOURNAL OF THE GLOBAL POWER AND PROPULSION SOCIETY (2023)

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Review Green & Sustainable Science & Technology

The role of clean energy in achieving decarbonization of electricity generation, transportation, and heating sectors by 2050: A meta-analysis review

Xuelin Tian et al.

Summary: Concerns about the environment have led to a global shift towards sustainable energy. A study on renewable energy and electrification abatement in Canada found that there is a trend towards detailed transition analysis of individual sectors to provide more precise recommendations for emission targets. The study emphasized the need for inter-provincial cooperation, precise transition analysis, and effective carbon pricing policies to achieve the goals of the Paris Agreement.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2023)

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Article Materials Science, Ceramics

Adjusting electrochemical properties of PrBaCo2O6-δ as SOFC cathode by controllable Ca3Co4O9 additions

M. V. Yurchenko et al.

Summary: Composite electrode materials were successfully obtained by mixing PrBaCo2O6-delta (PBCO) and Ca3Co4O9 +/-delta (CCO) oxides. Long term sintering and SOFC's operating conditions did not cause any interactions between the components, as shown by X-ray diffraction analysis. Increase in CCO content resulted in a noticeable decrease in thermal expansion coefficients, while the electrical conductivity of ceramics decreased negligibly. The obtained powdered composites had a developed microstructure and excellent adhesion with Ce0.8Sm0.2O1.9 dense support. The use of CCO as a thermal expansion coefficient lowering admixture to PBCO was found to be a more effective approach compared to ceria-based oxides.

CERAMICS INTERNATIONAL (2023)

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Review Chemistry, Physical

Overview of Approaches to Increase the Electrochemical Activity of Conventional Perovskite Air Electrodes

Elena Filonova et al.

Summary: The development of low-cost, commercially competitive solid oxide fuel cells with reduced operating temperatures is closely related to the search for new functional materials and technologies to improve the properties of established materials. Efforts are being made to improve air electrodes, which contribute to the degradation of cell performance at reduced temperatures. This review summarizes methods to improve the electrochemical performance of conventional air electrodes and provides background information for further development of electrode modification technologies.

MATERIALS (2023)

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Article Energy & Fuels

Evaluation of a hybrid power system based on renewable and energy storage for reliable rural electrification

Md Mustafa Kamal et al.

Summary: Microgrid systems are used to provide electricity to remote rural areas, offering stable energy solutions where grid extension is costly or not feasible. This research proposes a rural microgrid with integrated solar, diesel, and battery systems for Uttarakhand, India, and analyzes its techno-economic feasibility. The optimal hybrid system's net current and energy costs are calculated using moth flame optimization (MFO) to be $58372.00, with an energy cost of $0.14/kWh. Sensitivity analysis shows that the energy framework using MFO is 18% and 16% cheaper than GA and PSO, respectively. This research contributes to sustainable development in developed countries.

RENEWABLE ENERGY FOCUS (2023)

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Article Electrochemistry

Structure, Oxygen Mobility, and Electrochemical Characteristics of La1.7Ca0.3Ni1-xCuxO4+δ Materials

V. A. Sadykov et al.

Summary: The structure, oxygen mobility, and electrochemical characteristics of La1.7Ca0.3Ni1 -xCuxO4 + delta (x = 0-0.4) materials were studied. The materials showed single-phase tetragonal structure with increased cell parameter c and volume upon copper doping. Oxygen mobility decreased with higher copper content. Impedance spectroscopy studies revealed higher electrochemical activity in electrodes with La1.7Ca0.3Ni1 -xCuxO4 + delta functional layers and copper content x > 0.2. La1.7Ca0.3Ni0.6Cu0.4O4 + delta materials are potential candidates for air electrodes in electrochemical devices.

RUSSIAN JOURNAL OF ELECTROCHEMISTRY (2023)

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Article Chemistry, Multidisciplinary

Neutron diffraction and DFT studies of oxygen defect and transport in higher-order Ruddlesden-Popper phase materials

Mudasir A. Yatoo et al.

Summary: A series of higher-order Ruddlesden-Popper phase materials were synthesized and investigated by neutron powder diffraction to understand the oxygen defect structure and propose possible pathways for oxygen transport. DFT calculations were performed to support the experimental analysis. The majority of the oxygen vacancies were confined to the perovskite layers with a preference for equatorial oxygen sites. Neutron diffraction measurements and DFT calculations showed a preference for vacancies at certain oxygen sites and a curved oxygen transport pathway around the NiO6 octahedra. The thermal expansion coefficient for all compositions was compatible with solid oxide fuel cell electrolyte materials.

RSC ADVANCES (2023)

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Article Energy & Fuels

Optimal design and economic analysis of a hybrid renewable energy system for powering and desalinating seawater

Mohamed R. Gomaa et al.

Summary: This study investigates the use of renewable energy systems to operate a SWRO desalination station. The optimal hybrid power system configuration is PV-Wind-Diesel Generator-Battery, which has the lowest cost of energy and CO2 emissions.

ENERGY REPORTS (2023)

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Review Chemistry, Multidisciplinary

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

Inna Zvonareva et al.

Summary: Protonic ceramic electrochemical cells are considered eco-friendly means for energy/chemical conversion, but the negative impact of undesirable electronic transport in materials hinders their performance, leading to a search for solutions to improve efficiency.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Review Energy & Fuels

A review of solid oxide fuel cell based hybrid cycles

Pranjal Kumar et al.

Summary: The power sector is focused on developing newer thermodynamic systems for higher efficiency and output, with direct energy conversion systems being seen as suitable options for power generation. Solid oxide fuel cells, when combined with other energy systems, can increase total output and improve overall performance.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2022)

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Review Chemistry, Physical

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Muhammad Zaid Ahmad et al.

Summary: Solid oxide fuel cell (SOFC) is known for its high efficiency, but faces challenges due to its operational temperature. Improving the catalytic properties of cathode materials at lower temperatures is crucial for enhancing SOFC performance.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

Defect-induced pyrochlore Pr2Zr2O7 cathode rich in oxygen vacancies for direct ammonia solid oxide fuel cells

Fulan Zhong et al.

Summary: This study investigated pyrochlore Pr2B2O7 oxides and perovskite materials as DA-SOFC cathodes, finding that PZO shows superior oxygen vacancy content and excellent oxygen transport and conductivity properties, demonstrating promising potential for future applications.

JOURNAL OF POWER SOURCES (2022)

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Review Materials Science, Multidisciplinary

Recent progress of perovskite-based electrolyte materials for solid oxide fuel cells and performance optimizing strategies for energy storage applications

Muhammad Bilal Hanif et al.

Summary: This review summarizes recent developments and prospects of perovskite electrolyte materials in solid oxide fuel cells, emphasizing various design strategies and challenges.

MATERIALS RESEARCH BULLETIN (2022)

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Review Environmental Sciences

Perovskite oxides for oxygen transport: Chemistry and material horizons

Ning Han et al.

Summary: Oxygen permeable membranes have advantages in oxygen separation and can be applied in various fields, requiring further development of new materials and technologies. MIEC oxides based on perovskite oxides are important materials for high-temperature oxygen transport, with potential applications in environmental and energy sectors.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Review Chemistry, Physical

Recent advances, practical challenges, and perspectives of intermediate temperature solid oxide fuel cell cathodes

Amanda Ndubuisi et al.

Summary: Intermediate temperature solid oxide fuel cells (IT-SOFCs) are highly efficient and low-cost power generation technology, but face challenges such as slow oxygen reduction reaction, Cr poisoning, material degradation, and cathode compatibility issues. Research is ongoing to develop high-performance cathodes for cost-effective IT-SOFCs.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Review Energy & Fuels

A conceptual review of sustainable electrical power generation from biogas

Stephane Abanades et al.

Summary: The use of biogas derived from biomass as a renewable energy source offers multiple benefits in various sectors, but its efficiency can be impacted by pollutants and unwanted constituents. Upgrading technologies are essential to improve the lower heating value of biogas fuel by removing pollutants, and the environmental impacts of biogas plants must be assessed. Combining biogas energy with other sources, along with reusing waste energy for various tasks, is crucial in maximizing the potential of biogas as a sustainable energy solution.

ENERGY SCIENCE & ENGINEERING (2022)

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Article Materials Science, Multidisciplinary

Analysis of atomic structure, magnetic ordering, and oxygen diffusion in oxygen deficient Sr3Fe2O7-δ perovskite: Toward rational catalysts design

Tadashi Ota et al.

Summary: This study systematically investigates the mechanism of oxygen transfer in Sr3Fe2O7.0-delta material using DFT+U calculations. The findings have important implications for improving the performance of three-way catalysts and solid oxide fuel cell electrolyte materials.

PHYSICAL REVIEW MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Vladislav A. Sadykov et al.

Summary: Advancements in material design for solid oxide fuel cells, oxygen and hydrogen separation membranes, and catalysts for biofuel conversion have led to the development of more efficient cathodes and anodes, highly permeable membranes, and structured catalysts with nanocompositeactive components, demonstrating improved performance and stability in biofuel reforming processes.

CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY (2022)

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Review Materials Science, Ceramics

A brief review of heterostructure electrolytes for high-performance solid oxide fuel cells at reduced temperatures

Doyeub Kim et al.

Summary: This article provides an overview of the recent progress on solid oxide electrolyte materials, unique cell designs featuring bilayer electrolytes, and resulting microstructures at lower operating temperatures.

JOURNAL OF THE KOREAN CERAMIC SOCIETY (2022)

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Article Engineering, Multidisciplinary

Composite cathodes for protonic ceramic fuel cells: Rationales and materials

Meng Wang et al.

Summary: The article discusses the design principles and materials of protonic ceramic fuel cells and their composite cathodes, exploring the advantages and challenges of operating at low temperatures, with a focus on the importance of high-performance cathode materials.

COMPOSITES PART B-ENGINEERING (2022)

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Article Chemistry, Physical

Co-free triple perovskite La1.5Ba1.5Cu3O7±δ as a promising air electrode material for solid oxide fuel cells

Keyun Li et al.

Summary: The LBCu complex oxide is evaluated as a Co-free candidate air electrode material for reversible Solid Oxide Cells (rSOC). It is structurally and thermomechanically compatible with the LSGM electrolyte and maintains a layered perovskite crystal structure at high temperatures. LBCu exhibits moderate thermal expansion and its electrical conductivity correlates with the oxygen content. Functional LBCu air electrodes can be manufactured at relatively low temperatures and exhibit low polarization resistance values.

JOURNAL OF POWER SOURCES (2022)

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Article Chemistry, Physical

Performance comparison of composite cathode: Mixed ionic and electronic conductor and triple ionic and electronic conductor with BaZr0.1Ce0.7Y0.1Yb0.1O3-δ for highly efficient protonic ceramic fuel cells

Arim Seong et al.

Summary: This study investigates the effect of composite cathodes on the electrochemical performance of protonic ceramic fuel cells (PCFCs). It is found that combining proton-conducting oxide with a mixed ionic and electronic conductor or a triple ionic and electronic conductor can significantly enhance the peak power density, with the reduction in non-charge transfer resistance playing a key role.

JOURNAL OF POWER SOURCES (2022)

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Article Chemistry, Physical

In-situ surface reconstruction induced-significant performance promotion of Ca3Co4O9+δ cathode for solid oxide fuel cells

Xing Yue et al.

Summary: In this study, the surface morphology of CCO cathode was reconstructed through a reduction and re-oxidation process, leading to significant improvement in cathode performance. The ORR activity of the CCO cathode was notably enhanced after the treatment, which was attributed to the increased specific surface area and enhanced oxygen adsorption ability.

JOURNAL OF POWER SOURCES (2022)

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Review Chemistry, Physical

Review: Measurement of partial electrical conductivities and transport numbers of mixed ionic-electronic conducting oxides

Yue Huang et al.

Summary: This review summarizes five methods for determining the electrical conduction properties of mixed ionic-electronic conducting (MIEC) oxides and discusses their modifications considering electrode polarization and operation conditions. The application of these methods in assessing the conduction properties of triple ionic-electronic conducting (TIEC) oxides is highlighted, and the reliability and applicability of these methods are elaborated and compared.

JOURNAL OF POWER SOURCES (2022)

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Article Green & Sustainable Science & Technology

Environmental impact of renewable energy source based electrical power plants: Solar, wind, hydroelectric, biomass, geothermal, tidal, ocean, and osmotic

Abidur Rahman et al.

Summary: This paper analyzes the environmental impacts of renewable energy source (RES) based power plants, including solar, wind, biomass, geothermal, hydroelectric, tidal, ocean current, oceanic wave, ocean thermal, and osmotic effects. The SWOT analysis is conducted for all RES based power plants, and the comparative environmental impact analyses are presented. It is found that careful selection of RES is necessary to prevent harm to the environment.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Review Green & Sustainable Science & Technology

A review on recent progress and selection of cobalt-based cathode materials for low temperature-solid oxide fuel cells

R. Vinoth Kumar et al.

Summary: This review focuses on the potential cobalt-based cathodes for low-temperature solid oxide fuel cells (LT-SOFC). The combination of novel elements and new materials in the architecture of LT-SOFC can increase its efficiency. Decoration of metal nanoparticles or thin films on cathodes can enhance their performance and stability.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Article Chemistry, Physical

Influence of the substitution with rare earth elements on the properties of layered lanthanum nickelate - Part 1: Structure, oxygen transport and electrochemistry evaluation

E. Pikalova et al.

Summary: This study investigates the properties of La2NiO4+delta (LNO) substituted with rare earth elements and their effects on oxygen transport and electrochemical properties. The results show that substitution with rare earth elements can increase the oxygen over-stoichiometry and improve the oxygen transport properties of LNO, thus enhancing the electrochemical performance of the related electrodes.

SOLID STATE IONICS (2022)

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Review Chemistry, Multidisciplinary

Classification of Solid Oxide Fuel Cells

Kairat A. Kuterbekov et al.

Summary: This review summarizes various types of solid oxide fuel cells (SOFC) and describes their structural features, advantages, and disadvantages. Among the well-studied dual-chamber SOFC, those with anode-supported design and oxygen-ion conducting electrolyte are found to be the most suitable for operation at temperatures below 800 degrees C. Other promising types for low-temperature operation include SOFC with proton-conducting electrolyte and electrolyte-free fuel cells, although further research and development are needed for commercialization.

NANOMATERIALS (2022)

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Article Chemistry, Multidisciplinary

High-Temperature Behavior, Oxygen Transport Properties, and Electrochemical Performance of Cu-Substituted Nd1.6Ca0.4NiO4+δ Electrode Materials

Tatiana Maksimchuk et al.

APPLIED SCIENCES-BASEL (2022)

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Article Materials Science, Multidisciplinary

YSZ/LSM Composite Cathode Deposited by Solution Precursor Plasma Spraying

Xiaoming Wang et al.

Summary: Solution precursor plasma spraying (SPPS) was used to prepare a porous YSZ/LSM composite cathode for solid oxide fuel cell (SOFC). The surface morphology and microstructure of the composite cathode deposits were characterized. It was found that the as-sprayed YSZ/LSM deposits exhibited a porous aggregate with fine pores and small particles. Additionally, annealing treatment resulted in the formation of a continuous perovskite phase porous coating on the composite cathode. The polarization test showed low polarizations for the composite cathode at high temperatures.

COATINGS (2022)

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Review Engineering, Chemical

Environmental Aspects of the Combined Cooling, Heating, and Power (CCHP) Systems: A Review

Mohsen Salimi et al.

Summary: With the expansion of cities, there is an increasing demand for energy in the residential sector. Combined cooling, heating, and power systems can help reduce energy consumption and environmental impacts by utilizing renewable energy sources. In tropical regions with high cooling demand, solar hybrid systems are a superior choice. CCHP systems can also improve performance and increase productivity in various sectors.

PROCESSES (2022)

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Article Materials Science, Multidisciplinary

Basic properties of low thermal expansion coefficient (Y0.5Ca0.5)1-xInxBaCo3ZnO7+? (x=0, 0.1, 0.2, 0.3) solid solutions for solid oxide fuel cell cathode materials

Qingjun Zhou et al.

Summary: In this study, In-doped swedenborgite oxide materials were prepared and thoroughly investigated for their phase structure, electrical conductivity, thermal expansion coefficient, thermal stability, and electrochemical properties. The partial substitution of In for Y and Ca had minimal effect on the properties of the materials. The samples showed excellent tolerance to CO2 at high temperatures and the YCI0.2BCZ composition exhibited low resistance and high power density, making it a promising cathode material for IT-SOFCs.

MATERIALS RESEARCH BULLETIN (2022)

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Article Energy & Fuels

Steam Electrolysis vs. Co-Electrolysis: Mechanistic Studies of Long-Term Solid Oxide Electrolysis Cells

Stephanie E. Wolf et al.

Summary: This study conducted long-term stability tests on high-temperature solid oxide electrolysis cells under steam and co-electrolysis conditions to understand the degradation process, where it was found that the degradation rate was higher at 800 degrees Celsius compared to 750 degrees Celsius under steam electrolysis conditions, while a lower degradation rate was observed during co-electrolysis operation. Post-test analyses using SEM-EDX and XRD revealed delamination of LSC and Ni depletion and agglomeration on the fuel electrode side.

ENERGIES (2022)

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Review Environmental Sciences

Zirconia- and ceria-based electrolytes for fuel cell applications: critical advancements toward sustainable and clean energy production

Tushar Kanti Maiti et al.

Summary: Solid oxide fuel cells (SOFCs) are energy conversion devices with high efficiency and flexibility, and they are becoming popular for large-scale power generation. This critical review focuses on the recent advancements in developing suitable electrolytes for SOFCs, particularly zirconia- and ceria-based electrolytes, highlighting their potential for sustainable and clean energy production.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022)

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Review Chemistry, Physical

High-Entropy Materials in SOFC Technology: Theoretical Foundations for Their Creation, Features of Synthesis, and Recent Achievements

Elena Y. Y. Pikalova et al.

Summary: This review discusses the recent progress in the use of high-entropy alloys and oxides in solid oxide fuel cell technology, highlighting their stability mechanisms, synthesis methods, and advantages such as high strength and slow diffusion for high-temperature applications. High-entropy materials are considered promising for protective layers and electrode components in SOFCs, with potential applications as electrolytes and cathodes for improved performance and long-term stability. Future directions for the development of high-entropy materials for SOFCs operating at intermediate and low temperatures are also discussed.

MATERIALS (2022)

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Article Biochemistry & Molecular Biology

Nonstoichiometry, Defect Chemistry and Oxygen Transport in Fe-Doped Layered Double Perovskite Cobaltite PrBaCo2-xFexO6-δ (x=0-0.6) Membrane Materials

Ivan L. Ivanov et al.

Summary: This study provides a detailed investigation on the influence of iron doping on defect chemistry, oxygen nonstoichiometry, and oxygen transport in mixed conducting cobaltites. The results demonstrate that iron doping can optimize the performance of oxygen-conducting materials.

MEMBRANES (2022)

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Review Chemistry, Multidisciplinary

Recent Progress in the Design, Characterisation and Application of LaAlO3- and LaGaO3-Based Solid Oxide Fuel Cell Electrolytes

Elena Filonova et al.

Summary: This review summarizes two representative families of oxygen-conducting electrolytes: doped lanthanum aluminates (LaAlO3) and lanthanum gallates (LaGaO3). Their preparation features, chemical stability, thermal behaviour and transport properties are thoroughly analyzed in terms of their connection with the target functional parameters of related solid oxide fuel cells (SOFCs).

NANOMATERIALS (2022)

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Article Biochemistry & Molecular Biology

Model-Based Performance Analysis of Membrane Reactor with Ethanol Steam Reforming over a Monolith

Ludmilla Bobrova et al.

Summary: This paper presents a study on a membrane reactor using a catalytic monolith for ethanol steam reforming. The results show that the driving potential for hydrogen permeation across the same membrane is greater in the catalytic monolith-assisted reactor compared to the packed bed reactor. Numerical experiments reveal the effect of concentration gradients in the boundary layer near the membrane on hydrogen production and flux.

MEMBRANES (2022)

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Review Biochemistry & Molecular Biology

Dual-Phase Mixed Protonic-Electronic Conducting Hydrogen Separation Membranes: A Review

Hongda Cheng

Summary: This paper reviews the research progress on mixed protonic-electronic conducting hydrogen separation membranes, introducing the composition, characteristics, and performances of different membranes. The key issues affecting membrane performance are discussed, and recommendations for current problems and future trends are provided.

MEMBRANES (2022)

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Article Biochemistry & Molecular Biology

Sensitivity of Material, Microstructure and Operational Parameters on the Performance of Asymmetric Oxygen Transport Membranes: Guidance from Modeling

Kai Wilkner et al.

Summary: In this study, a sensitivity analysis was conducted using a 1D transport model to identify the key parameters for oxygen transport membranes. The results showed that the ambipolar conductivity of the material and the total pressure in the gas phase were related to the limitations of oxygen transport. This model is useful for guiding the development of high-performance gas separation membranes.

MEMBRANES (2022)

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Article Chemistry, Analytical

Electrochemical characteristics of Ca3Co4O9+6 oxygen electrode for reversible solid oxide cells

Xu Zhang et al.

Summary: The oxygen electrode based on the misfit-layered structure of Ca3Co4O9+delta (CCO) material showed superior electrocatalytic activity and long-term stability for reversible solid oxide cells (RSOCs).

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2022)

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Article Energy & Fuels

A comprehensive study of renewable energy sources: Classifications, challenges and suggestions

Tze-Zhang Ang et al.

Summary: Renewable energy is a key element in sustainable and environmentally friendly electricity generation. Research on renewable energy technologies is increasing to improve their performance and efficiency. This paper reviews current renewable energy technologies and suggests solutions for the challenges and limitations they face.

ENERGY STRATEGY REVIEWS (2022)

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Article Metallurgy & Metallurgical Engineering

Hydrogen Kinetics in Membrane Alloys Based on Fe-Ni, Nb-Ni, and V-Ni

N. Sidorov et al.

Summary: This study analyzes the kinetic characteristics, such as diffusion coefficient and permeability, of hydrogen in membrane alloys based on binary alloys Fe-Ni, Nb-Ni, and V-Ni. Various structural modifications, such as amorphous, nanocrystalline, and duplex structures, were studied and the efficiency of selectivity processes in each modification was determined. The influence of thermodynamic parameters, specifically temperature and pressure, on the permeability, diffusion, and flow of hydrogen in the alloys was revealed.

RUSSIAN METALLURGY (2022)

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Article Materials Science, Composites

Simple Approach to the Fabrication of Lanthanum Orthoniobates and Nanocomposites with Ni, Cu, and Co Metal Nanoparticles Using Supercritical Isopropanol

Dinara Altynbekova et al.

Summary: Orthoniobates of rare-earth elements are promising materials for nanocomposite hydrogen separation membranes due to their proton conductivity, mechanical properties, and stability. Nanocomposites of lanthanum orthoniobates with NiCu and NiCo nanoparticles were successfully synthesized using the solvothermal method.

JOURNAL OF COMPOSITES SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Recent developments in oxide ion conductors: focusing on Dion-Jacobson phases

Wenrui Zhang et al.

Summary: This article discusses the recent developments in new oxide-ion conductors and Dion-Jacobson-type layered oxide-ion conductors, with a focus on CsM2Ti2NbO10-delta and their solid solutions. The article proposes that the large sized Cs+ cations and M3+ displacements play a significant role in the oxide-ion migration, and presents evidence that Dion-Jacobson-type layered perovskites are superior oxide-ion conductors.

CHEMICAL COMMUNICATIONS (2022)

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Article Chemistry, Inorganic & Nuclear

Structural and transport properties of Nd tungstates and their composites with Ni0.5Cu0.5O obtained by mechanical activation

Nikita F. Eremeev et al.

Summary: Nd tungstates and their composites with nickel(ii)-copper(ii) oxide were studied for their structural, textural and oxygen transport features. The composites exhibited a complex phase composition, and extended defects were observed in TEM images, enabling fast diffusion along grain boundaries. The oxygen diffusivity decreased significantly in the composites, but increased after reduction and reoxidation, suggesting potential use in catalytic reactors based on hydrogen separation membranes.

DALTON TRANSACTIONS (2022)

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Correction Chemistry, Physical

Enhanced oxygen reduction kinetics of IT-SOFC cathode with PrBaCo2O5+δ/Gd0.1Ce0.9O2-δ coherent interface (vol 10, pg 3495, 2022)

Yang Zhang et al.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Review Electrochemistry

Perovskite Cathode Materials for Low-Temperature Solid Oxide Fuel Cells: Fundamentals to Optimization

Zhiheng Li et al.

Summary: Acceleration of the oxygen reduction reaction at the cathode is crucial for low-temperature solid oxide fuel cells. Understanding the interactions between surface and bulk of the cathode materials is important for electrode kinetics and overall efficacy. Future research directions include investigating the role of oxygen vacancy, rational modulation of surface-bulk interactions, and the use of advanced fabrication techniques.

ELECTROCHEMICAL ENERGY REVIEWS (2022)

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Review Chemistry, Physical

Recent Advances in Perovskite-Type Oxides for Energy Conversion and Storage Applications

Chunwen Sun et al.

Summary: This review discusses the research conducted by Professor John B. Goodenough on perovskite-type oxides more than 60 years ago, highlighting their crucial role in energy conversion and storage. It also emphasizes recent advances and novel design strategies for optimizing performance in various applications of perovskite oxides.

ADVANCED ENERGY MATERIALS (2021)

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Review Materials Science, Ceramics

Potential of pyrochlore structure materials in solid oxide fuel cell applications

Anjana P. Anantharaman et al.

Summary: Pyrochlore structure materials have unique crystal structure, electrical properties, and thermal stability, making them widely applicable in catalysis, nuclear waste encapsulation, sensors, and electronic devices. The ionic/electronic conductivity of these materials is crucial for their performance in solid oxide fuel cells, where factors like cation radius ratio, oxygen migration, vacancy formation, and dopant addition play significant roles in enhancing the conductivity. Research has shown that controlling these factors can improve the ion and electron transport properties of pyrochlore materials, ultimately leading to better performance in various applications.

CERAMICS INTERNATIONAL (2021)

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Review Chemistry, Applied

Recent advances and perspectives of fluorite and perovskite-based dual-ion conducting solid oxide fuel cells

Jiafeng Cao et al.

Summary: Understanding the dual-ion transportation behavior in solid electrolyte is crucial for explaining unusual fuel cell performance and enriching knowledge in solid state ionics. The development of novel dual-ion conducting electrolytes is beneficial for the advancement of SOFCs.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Review Chemistry, Physical

Triple ionic-electronic conducting oxides for next-generation electrochemical devices

Meagan Papac et al.

Summary: Triple ionic-electronic conductors (TIECs) have potential applications in various electrochemical devices, but further research is needed to fully understand their transport properties and electrocatalytic activity. Current studies focus on defect formation and conduction mechanisms in single-phase materials. By exploring criteria for discovery, design principles, and operating conditions, it is possible to intentionally adjust the conductivity of each charge carrier.

NATURE MATERIALS (2021)

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Review Green & Sustainable Science & Technology

Fuel cell-battery hybrid systems for mobility and off-grid applications: A review

Shuai Ma et al.

Summary: The global demand for fossil fuels in the transportation sector is increasing rapidly due to the continuous growth of internal combustion engine vehicles, leading to severe environmental problems. Therefore, increasing the use of renewable energy sources in the transportation sector is necessary. Battery and fuel cells are promising alternatives due to high efficiency and low emissions, but are limited by capacity and dynamic response issues.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Article Chemistry, Physical

Triple perovskite structured Nd1.5Ba1.5CoFeMnO9-δ oxygen electrode materials for highly efficient and stable reversible protonic ceramic cells

John-In Lee et al.

Summary: The use of highly defective material NBCFM in RPCCs' oxygen electrode achieves exceptional performance with high peak power densities and stability, helping to maximize the concentration of protons and oxygen vacancies.

JOURNAL OF POWER SOURCES (2021)

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Article Chemistry, Physical

Key trends in the proton conductivity of Ln6-xMoO12-δ (Ln = La, Nd, Sm, Gd -Yb; x=0, 0.5, 0.6, 0.7, 1) rare-earth molybdates

A. V. Shlyakhtina et al.

Summary: The study focused on the structure and proton conductivity of rhombohedral La6-xMoO12-delta (x = 0.5, 0.6, 0.7, 1) lanthanum molybdates produced by mechanical activation and thermal annealing. It was found that an increase in molybdenum concentration in the La6-xMoO12-delta series led to a decrease in both rhombohedral distortion and proton conductivity. The optimal composition of La6-xMoO12-delta (x = 0.5) exhibited a proton conductivity of approximately 4.0 x 10(-5) S/cm at 500 degrees C in wet air.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Methods to increase electrochemical activity of lanthanum nickelate-ferrite electrodes for intermediate and low temperature SOFCs

E. Pikalova et al.

Summary: The methods to increase electrochemical activity and stability of air electrodes based on LNF and SDC have been developed. The optimized electrodes exhibit good electrode performance and low degradation rate, maintaining a low polarization resistance level even after long-term testing.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Conductivity and oxygen diffusion in bixbyites and fluorites Ln6-xMoO12-δ (Ln = Er, Tm; x=0, 0.5)

A. V. Shlyakhtina et al.

Summary: In this study, new compounds of erbium and thulium molybdates were analyzed using various methods, revealing their different ionic conductivity in dry and wet environments, showing mixed oxygen-electronic conductors at high temperatures, and demonstrating that fluorites have higher oxygen ion mobility compared to bixbyites.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Structure, thermal expansion and electrical conductivity of La2-xGdxNiO4+δ (0.0 ≤x≤ 0.6) cathode materials for SOFC applications

Viktor A. Tsvinkinberg et al.

Summary: La2-xGdxNiO4+delta compounds synthesized via formate pyrolysis show potential as cathode materials for IT-SOFCs, with superior crystal structure and oxygen over-stoichiometry values compared to undoped or alkali-earth element doped materials. The chemical and thermo-mechanical compatibility with Ce0.8Gd0.2O1.9 solid-state electrolyte was also studied, indicating promising applications in increasing efficiency and durability of SOFCs.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Physical

Catalytic methane activation over La1-xSrxScO3-α proton-conducting oxide surface: A comprehensive study

Dmitriy M. Zakharov et al.

Summary: The influence of strontium on methane activation over La1-xSrxScO3-alpha catalyst was investigated using a combination of methods at temperatures ranging from 673 to 973 K. It was found that methane activation occurs through four parallel channels, with the increase of strontium content significantly increasing catalytic activity. The stability of methane intermediates is closely related to surface defect structure, temperature and strontium content.

JOURNAL OF CATALYSIS (2021)

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Article Chemistry, Physical

Lanthanum nickelates and their application in Solid Oxide Cells - The LaNi1-xFexO3 system and other ABO3-type nickelates

C. M. Harrison et al.

Summary: The application of doped lanthanum nickelate type perovskites in Solid Oxide Cells (SOC) has been an area of significant study, with a focus on LaNi1-xFexO3. While there is debate on whether these materials can replace current materials, it has been suggested that improving electrode architecture could enhance cell performance.

SOLID STATE IONICS (2021)

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Review Biochemistry & Molecular Biology

Recent Advances in Membrane-Based Electrochemical Hydrogen Separation: A Review

Leandri Vermaak et al.

Summary: This paper provides an overview of commercial hydrogen separation technologies, with a detailed discussion on electrochemical hydrogen separation (EHS). EHS has various advantages, but is hindered by factors such as cost, lack of understanding of degradation mechanisms, and unexplored aspects.

MEMBRANES (2021)

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Review Energy & Fuels

Palladium-Alloy Membrane Reactors for Fuel Reforming and Hydrogen Production: A Review

Mohamed A. Habib et al.

Summary: Hydrogen has the potential to be a clean energy carrier with better combustion characteristics and higher energy efficiency when used with fuel cells. Inorganic palladium (Pd) membranes show great potential for separating hydrogen due to their stability and high selectivity. Various methods of fabricating Pd-alloy membranes are discussed in terms of stability and selectivity, with a focus on Pd-Ag, Pd-Cu, Pd-Au, and Pd-Ru alloys.

ENERGY & FUELS (2021)

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Article Chemistry, Physical

Development of composite LaNi0.6Fe0.4O3-δ-based air electrodes for solid oxide fuel cells with a thin-film bilayer electrolyte

E. Pikalova et al.

Summary: In this study, bilayer composite electrodes based on LNF electronic conductor and Bi2O3-based electrolytes doped with Er and Y have been developed and their performance has been investigated under different electrolyte content and sintering conditions. The optimized electrodes showed polarization resistance in the range of 0.65-1.09 Omega cm(2) at 600 degrees C and 0.10-0.12 Omega cm(2) at 700 degrees C, with significantly improved performance compared to standard platinum cathodes in single cells.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Crystal structure and functional properties of Nd1.6Ca0.4Ni1-yCuyO4+δ as prospective cathode materials for intermediate temperature solid oxide fuel cells

E. A. Filonova et al.

Summary: The study focused on complex oxides Nd1.6Ca0.4Ni1-yCuyO4+delta, revealing that a Cu doping of 0.2 results in the highest total conductivity and lowest linear coefficient of thermal expansion. The oxides also demonstrate good chemical compatibility with oxygen- and proton conducting electrolytes up to 1100 degrees C.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Biochemistry & Molecular Biology

An Experimental Performance Study of a Catalytic Membrane Reactor for Ethanol Steam Reforming over a Metal Honeycomb Catalyst

Nikita Eremeev et al.

Summary: This study focuses on the combination of ethanol steam reforming and hydrogen separation using a lab-scale catalytic membrane reactor (CMR), showing that the use of a monolithic catalyst and asymmetric supported membrane can increase hydrogen permeation efficiency. Operating parameters such as temperature, molar ratio of water/ethanol, and reagent concentration play important roles in determining the effectiveness of the reaction-separation process in the CMR.

MEMBRANES (2021)

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Article Biochemistry & Molecular Biology

Recent Advances in Catalysts and Membranes for MCH Dehydrogenation: A Mini Review

Durga Acharya et al.

Summary: Methylcyclohexane (MCH), as a liquid organic hydrogen carrier, plays a significant role in future hydrogen storage and transportation systems due to its advantages such as large hydrogen storage capacity and well-known catalytic reactions. The development of efficient catalytic membrane reactors has the potential to improve dehydrogenation reaction efficiency and drive the commercialization of viable hydrogen production systems.

MEMBRANES (2021)

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Review Materials Science, Multidisciplinary

Electrode/electrolyte interface and interface reactions of solid oxide cells: Recent development and advances

Shuai He et al.

Summary: High temperature solid oxide cells (SOCs) are environmentally friendly and efficient energy conversion technology to store renewable energy and generate electricity. Research has focused on understanding the processes at the electrode/electrolyte interfaces, which play a crucial role in cell performance and durability. Challenges and prospects of interface research for improving SOC device performance and durability are discussed.

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL (2021)

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Article Engineering, Chemical

Influence of Cr doping on hydrogen permeation performance of lanthanum tungstate membrane

Yao Huang et al.

Summary: The effect of Cr doping on the phase structure, microstructure, hydrogen permeation, and chemical stability of lanthanum tungstate was investigated. It was found that with the increase in Cr content, the hydrogen permeation flux also increased. The membrane with x = 0.2 showed the highest hydrogen permeation flux due to its higher oxygen vacancy concentration, and exhibited good stability during a 104-hour hydrogen permeation test.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Article Chemistry, Physical

Interaction of O2 with LSM-YSZ Composite Materials and Oxygen Spillover Effect

Maxim Ananyev et al.

Summary: The study investigates the interaction between gas-phase oxygen and LSM-YSZ composite catalytic materials at different temperatures and oxygen partial pressures. It reveals significant differences in heterogeneous exchange rates between lanthanum-strontium manganite and zirconia-yttria electrolyte, as well as a unique exchange mechanism for the composites compared to individual oxides.

ACS CATALYSIS (2021)

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Review Chemistry, Physical

Undoped Sr2MMoO6 Double Perovskite Molybdates (M = Ni, Mg, Fe) as Promising Anode Materials for Solid Oxide Fuel Cells

Lubov Skutina et al.

Summary: This review discusses the chemical design of new functional materials for solid oxide fuel cells, focusing on double perovskite molybdates as possible alternatives to traditional materials. It examines the fundamental properties of four members and their synthesis features, electrical conductivity, thermal behaviors, and chemical compatibility with other materials. The information provided can be used as a basis for designing efficient fuel electrodes from complex oxides with layered structures.

MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Electrokinetic Proton Transport in Triple (H+/O2-/e-) Conducting Oxides as a Key Descriptor for Highly Efficient Protonic Ceramic Fuel Cells

Arim Seong et al.

Summary: Triple conducting oxides (TCOs) have shown great potential in energy conversion and storage applications, and understanding their proton movement remains a challenge. This study utilized the isotope exchange diffusion profile method to evaluate proton kinetic properties in the layered perovskite-type TCO PBSCF, revealing significantly higher proton diffusion coefficient compared to oxygen at elevated temperatures. The research provides an innovative way to quantify proton kinetic properties in TCOs, which is crucial for understanding their electrochemical behavior and electrode reaction mechanisms.

ADVANCED SCIENCE (2021)

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Article Crystallography

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

Elena Pikalova et al.

Summary: This study investigates the structure and transport properties of Ca-doped La2NiO4+delta materials and reveals the impact of Ca content on the materials' characteristics. Different crystal structures and oxygen mobilities were observed for materials with varying levels of calcium, affecting the oxygen transport properties.

CRYSTALS (2021)

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Article Biochemistry & Molecular Biology

Effect of Asymmetric Membrane Structure on Hydrogen Transport Resistance and Performance of a Catalytic Membrane Reactor for Ethanol Steam Reforming

Ludmilla Bobrova et al.

Summary: The study investigates the performance of catalytic membrane reactors through numerical simulations, revealing the impact of interactions between catalytic and separation components on reactor performance. Simulations demonstrate the model's capability to analyze local concentration gradients, providing accurate estimates of the structure-property-performance relationship.

MEMBRANES (2021)

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Article Chemistry, Physical

Enhanced H2 production by using La5.5WO11.25-δ-La0.8Sr0.2FeO3-δ mixed oxygen ion-proton-electron triple-conducting membrane

Wenyuan Liang et al.

Summary: By developing a mixed oxygen ion-proton-electron triple-conducting membrane LWO-LSF, a high H-2 flux in H-2 production was achieved by enhancing H-2 production efficiency through the permeation and counter-permeation of proton and oxygen ion.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Multidisciplinary

Solid oxide fuel cells based on ceramic membranes with mixed conductivity: improving efficiency

Elena Yu Pikalova et al.

Summary: Modern approaches to increase the efficiency of solid-oxide fuel cells (SOFCs) focus on material-science concepts and technological solutions related to electrolytic membranes with mixed conductivity, as well as mathematical modelling and new design solutions for optimal operation conditions. The application of nanocomposite electrolytes and evaluation of new design solutions show promising prospects for the future.

RUSSIAN CHEMICAL REVIEWS (2021)

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Review Chemistry, Physical

Catalytic Membrane Reactors: The Industrial Applications Perspective

Catia Algieri et al.

Summary: Catalytic membrane reactors have been widely used in different production industries globally for their ability to reduce waste generation and energy consumption. Research on applying CMR with higher membrane area per unit volume remains limited, as well as the use of bio-based catalytic membrane systems in commercial applications. Further exploration is needed to fully understand the opportunities and advantages of applying catalytic membrane reactors in multi-phase systems.

CATALYSTS (2021)

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Article Chemistry, Multidisciplinary

Theoretical Investigation of Proton Diffusion in Dion-Jacobson Layered Perovskite RbBiNb2O7

Jing Shi et al.

Summary: Perovskite oxide RbBiNb2O7 exhibits good proton-transport behavior in the a-b plane due to its unique layered crystal structure, making it a promising candidate for electrolyte membrane applications in solid oxide fuel cells. The proton diffusion in RbBiNb2O7 is two-dimensional layered in nature and isolated by a higher energy barrier in the Rb-O and Nb-O layers, showing potential for efficient proton conductivity. This study provides theoretical evidence for the potential application of RbBiNb2O7 as an electrolyte in SOFCs by revealing its microscopic mechanisms of proton conductivity.

NANOMATERIALS (2021)

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Review Green & Sustainable Science & Technology

Oxygen carriers for chemical-looping water splitting to hydrogen production: A critical review

Longfei Zhao et al.

Summary: Chemical looping water splitting (CLWS) process using metal oxides or perovskites as oxygen carriers is capable of producing pure H 2 efficiently, simply, and flexibly. Efforts have been made to improve the redox activity and stability of OCs for hydrogen production from CLWS. Fe-based OCs with various additives are attractive for the CLWS process, but challenges for the development of OCs still exist.

CARBON CAPTURE SCIENCE & TECHNOLOGY (2021)

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Article Chemistry, Physical

Activity of layered swedenborgite structured Y0.8Er0.2BaCo3.2Ga0.8O7+δ for oxygen electrode reactions in at intermediate temperature reversible ceramic cells

Ji-Seop Shin et al.

Summary: The novel layered swedenborgite structure Y0.8Er0.2BaCo3.2Ga0.8O7+delta (YEBCG) catalyst shows excellent performance in high-performance SOFCs and RPCCs, including thermal stability, fast reaction rates, and outstanding power density.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Inorganic & Nuclear

The rich physics of A-site-ordered quadruple perovskite manganites AMn(7)O(12)

Alexei A. Belik et al.

Summary: Perovskite-structure AMnO(3) manganites have contributed to the development of various physical concepts, while A-site-ordered quadruple perovskite manganites AMn(7)O(12) exhibit rich physics beyond the canonical materials. Recent progress in understanding them has been achieved with the wider use of high-pressure synthesis techniques.

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