Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO + SDC anode and BSCF + SDC cathode

Chunming Zhang, Yao Zheng, Ran Ran, Zongping Shao, Wanqin Jin, Nanping Xu, Jeongmin Ahn

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The initialization of an anode-supported single-chamber solid-oxide fuel cell, with NiO + Sm0.2Ce0.8O1.9 anode and Ba0.5Sr0.5Co0.8Fe0.2O3-δ + Sm0.2Ce0.8O1.9 cathode, was investigated. The initialization process had significant impact on the observed performance of the fuel cell. The in situ reduction of the anode by a methane-air mixture failed. Although pure methane did reduce the nickel oxide, it also resulted in severe carbon coking over the anode and serious distortion of the fuel cell. In situ initialization by hydrogen led to simultaneous reduction of both the anode and cathode; however, the cell still delivered a maximum power density of ∼350 mW cm-2, attributed to the re-formation of the BSCF phase under the methane-air atmosphere at high temperatures. The ex situ reduction method appeared to be the most promising. The activated fuel cell showed a peak power density of ∼570 mW cm-2 at a furnace temperature of 600 °C, with the main polarization resistance contributed from the electrolyte.

Original languageEnglish (US)
Pages (from-to)640-648
Number of pages9
JournalJournal of Power Sources
Volume179
Issue number2
DOIs
StatePublished - May 1 2008

Keywords

  • BaSrCoFeO
  • Methane
  • Single chamber
  • Solid-oxide fuel cell (SOFC)

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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