Premium
Enhanced coking resistance of Ni cermet anodes for solid oxide fuel cells based on methane on‐cell reforming by a redox‐stable double‐perovskite Sr 2 MoFeO 6‐δ
Author(s) -
Chang Hong,
Chen Huili,
Yang Guangming,
Shi Jing,
Zhou Wei,
Bai Jianping,
Wang Yuekui,
Li SiDian
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4106
Subject(s) - anode , cermet , methane , solid oxide fuel cell , chemical engineering , electrochemistry , oxide , perovskite (structure) , materials science , redox , catalysis , carbon fibers , inorganic chemistry , chemistry , electrode , metallurgy , composite material , organic chemistry , ceramic , engineering , composite number
Summary Carbon deposition on a Ni‐based anode is troublesome for the direct power generation from methane‐based fuels using solid oxide fuel cell. In this paper, a redox‐stable double‐perovskite Sr 2 MoFeO 6‐δ (SMFO) is applied as an independent on‐cell reforming catalyst over a Ni‐YSZ anode to improve coking resistance. The morphology, catalytic activity and electrochemical performance for wet methane/coal‐bed gas (CBG) are investigated. A Ni‐YSZ anode supported cell with SMFO generates a high power output of 1.77 W·cm −2 and exhibits favorable stability operated on wet CH 4 at 800°C. Post‐mortem micro‐structural analyses of cells indicate the cell operated on CBG shows coking probably due to the heavy carbon compounds in CBG.