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Review
Chemistry, Physical
Nataliia Tarasova et al.
Summary: This paper reviews the research on the new class of ionic conductors. Layered perovskite materials Ba(Sr)La(Nd)InO4 and various doped compositions have been investigated as oxygen-ion and proton conductors. The study found that doped and undoped layered perovskites exhibit mixed hole-ionic conductivity properties and can achieve proton conductivity in humid air.
Article
Electrochemistry
E. E. Lomonova et al.
Summary: Directionally solidified single crystals of (ZrO2)(1)(- x)(Y2O3)(x) solid solutions were grown, and the effect of stabilizing yttrium oxide concentration on their transport characteristics was studied. The crystal with a composition of (ZrO2)0.91(Y2O3)0.09 showed the highest electrical conductivity. Ceramic samples were prepared using the milled powder from this crystal, and the comparison between ceramic and single-crystal samples was conducted. The ionic conductivity of both materials was similar.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
E. A. Agarkova et al.
Summary: This study successfully synthesized bilayered anode-supported materials and bilayered gas-tight electrolyte through tape casting. The results showed that as the working temperature decreases, the contribution of electrode processes to the cell's internal resistance increases, resulting in a decrease in specific power.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
N. Lyskov et al.
Summary: The influence of the surface topology of the Ce0.9Gd0.1O1.95 solid electrolyte, formed by laser processing, on the electrochemical activity of the Pr1.95La0.05CuO4 cathode material in oxygen reduction reaction is studied. The ordered columnar structure with a relief profile depth of approximately 11-12 μm is found to be the most preferable for achieving higher electrochemical activity.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
B. V. Voloshin et al.
Summary: The substitution of 5% ferroactive molybdenum cations for iron in the La0.6Sr0.4Co0.2Fe0.8O3 - delta (LSCF) structure significantly increases the electric conductivity. Using powder X-ray diffraction, the researchers identified the solubility limit of molybdenum in rhombohedral perovskite structure. It was found that the transport characteristics of La0.6Sr0.4Co0.2Fe0.75Mo0.05O3 - delta (LSCFM5) make it suitable as a cathode material in intermediate temperature solid oxide fuel cells (IT SOFCs).
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
S. Nefedkin et al.
Summary: This study presents the results of the R&D of electrochemical components for an energy system based on hydrogen-air open cathode fuel cells with proton-exchange membrane. The study shows that this system can achieve a high specific energy electrical power system by using self-humidification of the membrane with reaction water, without the need for humidifiers and heaters, and using light metals as the material for the bipolar plates. Additionally, the study investigates methods for improving the electrochemical components to achieve higher power modulus.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
A. I. Ivanov et al.
Summary: The electrical conductivity of fluorite-type Ce1-x-yLaxPryO2-delta solid solutions was studied, and it was found that (Ce,La)O2-delta exhibits predominant anion conductivity with oxygen ion transference numbers above 0.99 over the entire temperature range. The decrease in oxygen partial pressure leads to an increase in n-type electronic conduction, and the concentrations of point defects and their diffusivities were calculated under reductive conditions.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
A. Nikonov et al.
Summary: The La0.6Sr0.4Co0.8Fe0.2O3-delta-Ce0.73Gd0.27O2-delta composite cathodes (LSCF-GDC) were prepared using nanopowders through a method of mixing precursors followed by sintering. The optimal sintering temperature was found to be 1100 degrees C, and no secondary phases were formed even at 1400 degrees C. The characteristics of the LSCF-GDC cathodes degrade with the increase in the GDC fraction. The addition of GDC nanopowder accelerates the sintering process, resulting in a denser cathodic structure and increased polarization resistance.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
B. V. Voloshin et al.
Summary: The high-temperature performance of microtubular LSCF membrane was studied using the operando high-temperature X-ray diffraction method. It was found that the outer surface of the membrane closely resembles the structure of LSCF powder at the same oxygen concentration, whether the feed gas is delivered outside the membrane or the external surface is blown around by pure helium.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
M. Khalid Hossain et al.
Summary: This paper discusses the applications of zirconate-based proton-conducting materials in electrochemical cells, focusing on their use in the hydrogen energy field. It provides a comprehensive summary of various doping schemes, experimental setups, operating conditions, and material performance. The challenges hindering the full potential of zirconate materials in electrochemical hydrogen devices are also discussed, and the paper offers suggestions for aspiring researchers in this field.
Article
Chemistry, Multidisciplinary
Yanru Yin et al.
Summary: A nonmetal doping strategy was explored to improve the performance of the conventional LSF cathode and achieved higher power density in solid oxide fuel cells. By using phosphorus as the cation dopant and synthesizing the LSFP compound, researchers uncovered the mechanisms behind the enhanced performance.
Review
Chemistry, Multidisciplinary
Jiafeng Cao et al.
Summary: Protonic ceramic fuel cells (PCFCs) are a promising energy technology that can efficiently convert chemical energy into electric power at reduced temperature. The practical use of PCFCs relies on efficient key cell materials, such as electrolyte and electrodes, that meet various requirements. In the past two decades, researchers have extensively explored complex oxides with the ABO(3) perovskite or related structure as key materials in PCFCs due to their flexible composition and versatile properties. The material engineering of perovskite oxides for PCFCs is an important focus of research, with a particular emphasis on compositional engineering to modify the lattice structure, defect structure, and ionic transportation behavior of perovskite oxides.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Review
Materials Science, Multidisciplinary
M. Khalid Hossain et al.
Summary: This review focuses on the recent developments in the proton-conducting performance of BaZrO3-based perovskite oxides, covering both experimental and theoretical aspects such as grain size, effects of sintering aids, proton conductivity, and electrolyte fabrication. The comprehensive information provided in this paper will guide researchers in understanding the trend and ongoing research on the development of BZO materials for low-temperature solid oxide fuel cell applications.
EMERGENT MATERIALS
(2021)
Article
Multidisciplinary Sciences
Masatomo Yashima et al.
Summary: Oxide-ion conductors are crucial in various applications for clean energy. The high oxide-ion conductivity of the hexagonal perovskite-related oxide Ba7Nb3.9Mo1.1O20.05, attributed to interstitialcy diffusion and low activation energy for oxide-ion conductivity, is reported by the authors.
NATURE COMMUNICATIONS
(2021)
Review
Materials Science, Multidisciplinary
Rotraut Merkle et al.
Summary: The study focuses on the defect behavior and applications of oxides with mixed protonic and p-type electronic conductivity, discussing their potential value and future development trends in protonic ceramic electrochemical cells.
ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 51, 2021
(2021)
Review
Materials Science, Ceramics
M. Khalid Hossain et al.
Summary: Doped BaZrO3 is a solid ion-conducting material with excellent proton conduction properties for electrolyte applications in electrochemical hydrogen devices operating in the intermediate temperature range of 400-650 degrees C. Enhanced proton transport properties and material fabrication processes of BZO can be achieved through the use of dopants, sintering aid, and various synthesis methods. The review highlights the applications of BZO in various electrochemical hydrogen devices and provides insights into the impact of different factors on the performance of BZO electrolyte materials.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Inorganic & Nuclear
Sefiu Abolaji Rasaki et al.
Summary: Rare-earth metal doped barium zirconate (RE+-BaZrO3) materials exhibit dual functions as electrodes and electrolytes in protonic ceramic fuel cells (PCFCs), with good electron-ion conductivity but facing challenges such as weak proton uptake and insufficient catalytic sites. Improvement in performance can be achieved through structural engineering and material modification.
PROGRESS IN SOLID STATE CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Sergey Ya Istomin et al.
Summary: This review focuses on the research results of single-phase and composite materials based on transition metal oxides as electrode materials for symmetrical solid oxide fuel cells. It discusses the electronic structures and thermodynamic stability of transition metal oxides with the perovskite structure, as well as the thermal behavior, chemical stability, electrical conductivity, and electrochemical properties of various electrode materials. The analysis identifies promising compositions of electrode materials and effective approaches for improving their functional characteristics, with a bibliography of 202 references provided.
RUSSIAN CHEMICAL REVIEWS
(2021)
Review
Chemistry, Multidisciplinary
Sergey P. Filippov et al.
Summary: The review discusses the prospects of global hydrogen energy development and the design of materials for sustainable hydrogen energy applications. It emphasizes the use of catalysts in hydrogen production and various methods for hydrogen storage, as well as the technologies involving fuel cells for hydrogen energy generation.
RUSSIAN CHEMICAL REVIEWS
(2021)
Article
Chemistry, Physical
Sacha Fop et al.
Review
Chemistry, Multidisciplinary
Anna V. Kasyanova et al.
RUSSIAN CHEMICAL REVIEWS
(2020)
Article
Chemistry, Multidisciplinary
Taito Murakami et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Physical
M. A. K. Yousaf Shah et al.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Materials Science, Multidisciplinary
M. Khalid Hossain et al.
JOURNAL OF NUCLEAR MATERIALS
(2020)
Article
Chemistry, Physical
Limin Zhang et al.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Nanoscience & Nanotechnology
Yusuke Noda et al.
Article
Chemistry, Inorganic & Nuclear
C. A. Hancock et al.
DALTON TRANSACTIONS
(2015)
Article
Chemistry, Inorganic & Nuclear
A. D. Smith et al.
JOURNAL OF SOLID STATE CHEMISTRY
(2013)
Article
Chemistry, Inorganic & Nuclear
J. F. Shin et al.
DALTON TRANSACTIONS
(2012)
Article
Chemistry, Physical
J. F. Shin et al.
JOURNAL OF MATERIALS CHEMISTRY
(2011)
