17_2019_Enhanced coking resistance of Ni cermet anodes for solid

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 Sr2MoFeO6‐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 CH4 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.