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

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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.

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Acknowledgements

This study was supported by JSPS Grant-in-Aid for Scientific Research (11014675) and by the State Scholarship Fund of China Scholarship Council (2008).

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Authors and Affiliations

  1. Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki, 036-8560, Japan

    Gang Chen & Abuliti Abudula

  2. North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori, 030-0813, Japan

    Guoqing Guan & Abuliti Abudula

  3. Aomori Prefectural Industrial Technology Research Center, Industrial Research Institute, 4-11-6, Second Tonyamachi, Aomori, 030-0113, Japan

    Yutaka Kasai

  4. Chemical Engineering College, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, People’s Republic of China

    Hong-Xin You

Authors
  1. Gang Chen
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  2. Guoqing Guan
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  3. Yutaka Kasai
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  4. Hong-Xin You
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  5. Abuliti Abudula
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Correspondence to Gang Chen or Abuliti Abudula.

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Chen, G., Guan, G., Kasai, Y. et al. Performance of cathode-supported SOFC with Ni0.5Cu0.5–CGO anode operated in humidified hydrogen and in low-concentration dry methane. J Solid State Electrochem 16, 2071–2077 (2012). https://doi.org/10.1007/s10008-011-1615-1

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  • DOI: https://doi.org/10.1007/s10008-011-1615-1

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