A single-/double-perovskite composite with an overwhelming single-perovskite phase for the oxygen reduction reaction at intermediate temperatures

Yubo Chen, Jian Shen, Guangming Yang, Wei Zhou, Zongping Shao

科研成果: 期刊稿件文章同行评审

50 引用 (Scopus)

摘要

The cathode is a key part in solid oxide fuel cells (SOFCs) that largely determines the cell power output and lifetime, and consequently the competitiveness of this attractive technology. Thus, the catalysts for cathodes with high electro-catalytic activity and good stability for the oxygen reduction reaction (ORR) at the intermediate temperature range are vital. Herein, a single-perovskite (SP)/double-perovskite (DP) composite with the nominal composition of SrCo0.7Fe0.2W0.1O3-δ is designed. During the synthesis, a slightly W-doped SP and a W-rich B-site cation ordered DP with the dominant SP phase of approximately 80 wt% are formed simultaneously. This new composite shows obviously enhanced stability owing to the W doping effect in the SP phase and increased activity from the synergistic effect between the SP and DP phases compared to the W-free SrCo0.8Fe0.2O3-δ perovskite. We anticipate that the synthesis of this perovskite-type composite could pave the way to discover more perovskite-based composite catalysts for SOFCs.

源语言英语
页(从-至)24842-24849
页数8
期刊Journal of Materials Chemistry A
5
47
DOI
出版状态已出版 - 2017

指纹

探究 'A single-/double-perovskite composite with an overwhelming single-perovskite phase for the oxygen reduction reaction at intermediate temperatures' 的科研主题。它们共同构成独一无二的指纹。

引用此