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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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| Authors: | Gang Chen Guoqing Guan Yutaka Kasai Hong-Xin You Abuliti Abudula |
| Institution: | 1. Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki, 036-8560, Japan 2. North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori, 030-0813, Japan 3. Aomori Prefectural Industrial Technology Research Center, Industrial Research Institute, 4-11-6, Second Tonyamachi, Aomori, 030-0113, Japan 4. Chemical Engineering College, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, People’s Republic of China |
| 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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