Carbon-resistant Ni1-xCox-Ce0.8Sm0.2O1.9 anode for solid oxide fuel cells fed with methanol

Guochang Ding, Tian Gan, Ji Yu, Ping Li, Xueli Yao, Nianjun Hou, Lijun Fan, Yicheng Zhao, Yongdan Li

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Ni1-xCoxO-Ce0.8Sm0.2O1.9 (SDC) composite is investigated as an anode material for solid oxide fuel cells with methanol as fuel. The interaction between NiO and SDC phases is enhanced by Co. Besides, Co reduces the particle size and improves the dispersion of Ni1-xCoxO by inhibiting the grain growth of NiO, which results in larger three-phase boundary in the anode layer. The Ni0.9Co0.1-SDC anode shows the lowest polarization resistance. A maximum power density of 675 mW cm(-2) is achieved by a single cell with Ni0.9Co0.1-SDC anode and SDC-carbonate composite electrolyte at 700 degrees C. Co also increases the resistance to carbon deposition of the anode and decreases the graphitization degree of deposited carbon with methanol as fuel. The cell with the Ni0.9Co0.1-SDC anode exhibits a stable performance during a 500-min discharge period.

Original languageEnglish
Pages (from-to)250-257
Number of pages8
JournalCatalysis Today
Volume298
DOIs
Publication statusPublished - 1 Dec 2017
MoE publication typeA1 Journal article-refereed
EventInternational Symposium on Catalytic Science and Technology in Sustainable Energy and Environment - Tianjin, China
Duration: 11 Oct 201614 Oct 2016
Conference number: 2

Keywords

  • Solid oxide fuel cell
  • Nickel anode
  • Cobalt
  • Methanol
  • Carbon deposition
  • HYDROGEN-PRODUCTION
  • NI CATALYSTS
  • ELECTROCHEMICAL PERFORMANCE
  • GRAPHITE FORMATION
  • HYDROCARBON FUELS
  • NI/CEO2 CATALYSTS
  • IN-SITU
  • ETHANOL
  • OXIDATION
  • CERMET

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