Ba0.9Co0.7Fe0.2Nb0.1O3-δ perovskite as promising cathode material for proton ceramic fuel cell

Article Materials Science, Ceramics

Ba-deficiency in BaCoO3 cathode allows high performance for proton-conducting solid oxide fuel cells

Keyou Shi et al.

Summary: A slight deficiency of Ba in BaCoO3 improves its chemical stability, protonation, and surface catalytic activity, resulting in enhanced fuel cell performance.

CERAMICS INTERNATIONAL (2022)

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Article Engineering, Environmental

Structure, synthesis, properties and solid oxide electrolysis cells application of Ba(Ce, Zr)O3 based proton conducting materials

Junmeng Jing et al.

Summary: Ba(Ce, Zr)O3 based proton-conducting oxides have attracted attention for their potential applications in H+-SOECs, showing lower activation energy and higher proton transfer properties compared to oxygen ion conductor perovskite oxides. Current research focuses on modification strategies, such as enhancing conductivity and chemical stability through the substitution of the B-site element, to improve the performance of H+-SOECs. Further attention should be given to current leakage, performance, and long-term stability of H+-SOECs in future studies.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

BaZr0.1Fe0.9-xNixO3-δ cubic perovskite oxides for protonic ceramic fuel cell cathodes

Jinpeng Wang et al.

Summary: The potential of BaZr0.1Fe0.9-xNixO3-delta as a cobalt-free and low-cost cathode for protonic ceramic fuel cells (PCFCs) was investigated. The study found that the material maintains a pure cubic perovskite structure within the doping concentration range of 15 to 20% and exhibits good chemical compatibility and high oxygen conductivity.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (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

Performance and DRT analysis of infiltrated functional cathode based on the anode supported SOFCs with long-term stability

Ziwei Zheng et al.

Summary: The relationship between morphology and kinetics of oxygen reduction reaction (ORR) in cathode functional layer (CFL) is studied. A highly efficient and robust CFL is prepared by infiltrating method, which shows significantly enhanced ORR activity. This study provides insights for improving the performance of solid oxide fuel cells.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Electrochemistry

Improving the Catalytic Activity of (Ba0.95La0.05)(Fe0.8Zn0.2)O3-δ Protonic Ceramic Fuel Cell Cathodes by Cation Substitution

Soon Ki Kim et al.

Summary: In this study, the catalytic activity of (Ba0.95La0.05)(Fe0.8Zn0.2)O3-delta (BLFZ) was enhanced by substituting Fe cations with Co cations. This resulted in improved performance of protonic ceramic fuel cell cathodes, particularly in hydrocarbon fuels.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Tuning oxygen vacancy of the Ba0?95La0?05FeO3-? perovskite toward enhanced cathode activity for protonic ceramic fuel cells

Junmeng Jing et al.

Summary: This study demonstrates that tailoring oxygen vacancies in Zn-doped BLFZ perovskite is beneficial for promoting the formation of proton defects. By regulating the oxygen vacancies, the BLFZ-BCZYYb composite electrode achieves rapid proton diffusion and exhibits excellent performance.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Materials Science, Ceramics

Ba0.95La0.05Fe0.8Ni0.2O3-? perovskite as efficient cathode electrocatalysts for proton-conducting solid oxide fuel cells

Junmeng Jing et al.

Summary: This study investigates the oxygen vacancy engineering on cobalt-free Ba0.95La0.05FeO3-delta (BLF) by nickel substitution, which promotes the generation of oxygen vacancies and enhances catalytic activity, leading to improved electrochemical performance of proton-conducting solid oxide fuel cells (H+-SOFCs).

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Electrokinetic Insights into the Triple Ionic and Electronic Conductivity of a Novel Nanocomposite Functional Material for Protonic Ceramic Fuel Cells

Idris Temitope Bello et al.

Summary: Triple ionic and electronic conductivity (TIEC) in cathode materials for protonic ceramic fuel cells (PCFCs) can be achieved by strategic development of multiphase cathode materials. The cubic-rhombohedral TIEC nanocomposite material designed in this study exhibits enhanced oxygen vacancy concentration and proton defects formation and transport, with low enthalpy of protonation and good cell performance stability.

SMALL (2022)

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Article Chemistry, Physical

High-performance La0.5(Ba0.75Ca0.25)0.5Co0.8Fe0.2O3-δ cathode for proton-conducting solid oxide fuel cells

Dong Xie et al.

Summary: The perovskite cathode material La-0.5(Ba0.75Ca0.25)(0.5)Co0.8Fe0.2O3-delta, with high electrical conductivity and catalytic activity, was used in proton-conducting solid oxide fuel cells. When combined with the electrolyte BaZr0.1Ce0.7Y0.1Yb0.1O3-delta, it showed excellent electrochemical performance, low polarization resistance, and high peak power density. The oxygen reduction reaction was found to be limited by oxygen adsorption, dissociation, and diffusion processes.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Multidisciplinary

Enhancing Oxygen Reduction Activity and Cr Tolerance of Solid Oxide Fuel Cell Cathodes by a Multiphase Catalyst Coating

Yinghua Niu et al.

Summary: Intermediate temperature solid oxide fuel cells (IT-SOFCs) face challenges due to the sluggish oxygen reduction reaction (ORR) and cathode degradation. A highly efficient multiphase catalyst coating significantly enhances the ORR activity and durability. Experimental results show improved peak power density and increased durability against Cr and H2O. Both the BCFN phase and BaCO3 phase contribute to the improved performance of the LSCF cathode.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Enhanced performance of a Ba0.5Sr0.5Co0.8Fe0.2O3-δ based oxygen electrode for solid oxide electrolysis cells by decorating with Ag particles

Jie Zheng et al.

Summary: The addition of silver particles to the BSCF oxygen electrode improves its performance by reducing polarization resistance, with the electrode decorated with 1.3 wt.% silver particles showing the best performance and stability. This method is proven to be an effective way to enhance the performance of a BSCF-based oxygen electrode for an SOEC.

MATERIALS RESEARCH EXPRESS (2021)

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Article Chemistry, Physical

Triple-component composite cathode for performance optimization of protonic ceramic fuel cells

Sung Hyun Hwang et al.

Summary: The study optimized the performance of a cathode for protonic ceramic fuel cells by employing a triple-component composite cathode design, which significantly improved the performance of CH4 fuel and suggests a possible contribution of the oxygen reduction reaction at the cathode to the reformation of CH4 at the anode.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Multidisciplinary

Perspectives on Cathodes for Protonic Ceramic Fuel Cells

Glenn C. Mather et al.

Summary: Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for efficient and clean energy conversion. However, the cathode design and composition play a crucial role in the performance of PCFCs at low temperature. Current research on cathode materials for PCFCs is classified into different categories, and the trends and recent progress in PCFC cathode research are worth noting.

APPLIED SCIENCES-BASEL (2021)

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Review Materials Science, Ceramics