Journal of Solid State Electrochemistry

, Volume 16, Issue 6, pp 2071–2077 | Cite as

Performance of cathode-supported SOFC with Ni0.5Cu0.5–CGO anode operated in humidified hydrogen and in low-concentration dry methane

Original Paper

Abstract

A Ni0.5Cu0.5–CGO (Ce0.8Gd0.2O1.9) anode in a LSM ((La0.75Sr0.25)0.95MnO3−δ)–CGO cathode-supported SOFC is tested in humidified H2 (3% H2O) and in low concentration of dry methane, respectively. After co-sintering at 1,300 °C, it was found that the A-site-deficient LSM effectively hindered the formation of La2Zr2O7 or SrZrO3. The OCVs of the cell are as high as 1.132, 1.14, and 1.147 V in humidified H2 and 1.314, 1.269, and 1.2 V in 14.8% of dry methane at 850, 800 and 750 °C, respectively, indicating that the ScSZ electrolyte film prepared by the present method is dense enough. The corresponding peak power densities are 0.396, 0.287, and 0.19 W cm−2 in humidified H2 and 0.249, 0.164, and 0.096 W cm−2 in 14.8% of dry methane at 850, 800, and 750 °C, respectively. The prepared cathode-supported SOFC with NiCu–CGO bimetallic anode shows long-term stability when dry methane is used as fuel.

Keywords

Solid oxide fuel cell Cathode-supported Bimetallic anode Methane 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Graduate School of Science and TechnologyHirosaki UniversityHirosakiJapan
  2. 2.North Japan Research Institute for Sustainable Energy (NJRISE)Hirosaki UniversityAomoriJapan
  3. 3.Aomori Prefectural Industrial Technology Research CenterIndustrial Research InstituteAomoriJapan
  4. 4.Chemical Engineering CollegeDalian University of TechnologyDalianPeople’s Republic of China

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