Enhanced coking resistance of Ni cermet anodes for solid oxide fuel cells based on methane on‐cell reforming by a redox‐stable double‐perovskite Sr2MoFeO6‐δ. (5th June 2018)

• Record Type: Journal Article
• Authors: Chang, Hong; Chen, Huili; Yang, Guangming; Shi, Jing; Zhou, Wei; Bai, Jianping; Wang, Yuekui; Li, Si‐Dian
• Other Names: Shao Zongping guestEditor.; Ni Meng guestEditor.
• Is Part Of: International journal of energy research. Volume 43:Number 7(2019)
• Page Start: 2527
• Page End: 2537
• Publication Date: 2018-06-05
• Subjects: coking resistance -- independent catalyst layer -- methane fuels -- solid oxide fuel cell; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.4106
• Languages: English
• ISSNs: 0363-907X

Abstract

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 Sr2 MoFeO6‐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. Abstract : A redox‐stable double‐perovskite SMFO is fabricated to a conventional Ni‐YSZ anode as an independent catalyst layer. The SMFO‐modified cell exhibits an excellent power output and a stable discharge profile when fed with wet methane‐based fuels.