Enhanced Cr-tolerance of an SOFC cathode by an efficient electro-catalyst coating
作者: Kai PeiYucun ZhouKang XuZuyun HeYan ChenWeilin ZhangSeonyoung YooBote ZhaoWei YuanMeilin LiuYu Chen
作者单位: 1School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr NW, Atlanta, GA, 30332-0245, USA
2School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
3School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China
刊名: Nano Energy, 2020, Vol.72
来源数据库: Elsevier Journal
DOI: 10.1016/j.nanoen.2020.104704
关键词: Oxygen reduction reactionFuel cellsSurface modificationSOFCCr tolerance
原始语种摘要: Abstract(#br)The durability and electro-catalytic activity for oxygen reduction reaction (ORR) of solid oxide fuel cells (SOFCs) cathode often suffer from severe degradation due to poisoning effects such as Cr from interconnectors. Here we report our findings in the development of a Cr-tolerant catalyst, BaCoO 3-x (BCO) nano-particles, which can dramatically enhance the ORR activity and durability of a state-of-the-art La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-x (LSCF) cathode exposed to Crofer 22APU. For example, the polarization resistance ( R p ) of a bare LSCF cathode increases from ~0.4 to ~1.5 Ωcm 2 after 100 hs exposure to Cr in air with 3% H 2 O at 750 °C. In contrast, R p of a BCO-coated LSCF cathode remains to be ~0.05 Ωcm 2 under the same condition, suggesting that BCO is catalytically...
全文获取路径: Elsevier  (合作)