期刊
ENERGY TECHNOLOGY
卷 8, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.202000486
关键词
electrochemical performance; power density; proton-conducting electrolytes; solid oxide fuel cells; structural analysis
资金
- Universiti Brunei Darussalam
- [UBD/OVAORI/CRGWG(006)/161201]
- National Research Foundation of Korea [22A20130012822] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Conventional solid oxide fuel cells (SOFCs) are operable at high temperatures (700-1000 degrees C) with the most commonly used electrolyte, yttria-stabilized zirconia (YSZ). SOFC research and development activities have thus been carried out to reduce the SOFC operating temperature. At intermediate temperatures (400-700 degrees C), barium cerate (BaCeO3) and barium zirconate (BaZrO3) are good candidates for use as proton-conducting electrolytes due to their promising electrochemical characteristics. Herein, two widely studied proton-conducting materials with two dopants are combined and an attractive composition for the investigation of electrochemical behaviors is discovered. Ba0.9Sr0.1Ce0.5Zr0.35Y0.1Sm0.05O3-delta(BSCZYSm), a perovskite-type polycrystalline material, has shown very promising properties to be used as proton-conducting electrolyte at intermediate temperature range. BSCZYSm shows a high proton conductivity of 4.167 x 10(-3) S cm(-1)in a wet argon atmosphere and peak power density of 581.7 mW cm(-2)in Ni-BSCZYSm | BSCZYSm | BSCF cell arrangement at 700 degrees C, which is one of the highest in comparison with proton-conducting electrolyte-based fuel cells reported until now.
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