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A real proton-conductive,robust,and cobalt-free cathode for proton-conducting solid oxide fuel cells with exceptional performance

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SusMat 2023年第5期3卷 697-708页

作者： Yanru Yin Dongdong Xiao Shuai Wu Eman Husni Da’as Yueyuan Gu Lei Bi School of Resources Environment and Safety Engineering University of South ChinaHengyangChina Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijingChina Clean Energy Research Center University of YamanashiKofuJapan

The development of proton,oxygen-ion,and electron mixed conducting materials,known as triple-conduction materials,as cathodes for proton-conducting solid oxide fuel cells(H-SOFCs)is highly desired because they can increase fuel cell performance by extending the reaction active *** oxygen-ion and electron conductions can be measured directly,proton conduction in these oxides is usually estimated *** of the instability of cathode materials in a reducing environment,direct measurement of proton conduction in cathode oxide is *** La0.8Sr0.2Sc0.5Fe0.5O3–δ(LSSF)cathode material is proposed for H-SOFCs in this study,which can survive in an H_(2)-containing atmosphere,allowing measurement of proton conduction in LSSF by hydrogen permeation ***,LSSF is discovered to be a unique proton and electron mixed-conductive material with limited oxygen diffusion capability that is specifically designed for *** LSSF is an appealing cathode choice for H-SOFCs due to its outstanding CO_(2)tolerance and matched thermal expansion coefficient,producing a record-high performance of 2032 mW cm^(−2)at 700℃and good long-term stability under operational *** current study reveals that a new type of proton–electron mixed conducting cathode can provide promising performance for H-SOFCs,opening the way for developing high-performance cathodes.

关键词： cathode high performance proton-conducting electrolyte proton-electron conductor protonic ceramic fuel cell solid oxide fuel cell

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