Cathode contact optimization and performance evaluation of intermediate temperature-operating solid oxide fuel cell stacks based on anode-supported planar cells with LaNi0.6Fe0.4O3 cathode |
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Authors: | Satoshi Sugita Yoshiteru YoshidaHimeko Orui Kazuhiko NozawaMasayasu Arakawa Hajime Arai |
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Affiliation: | NTT Energy and Environmental systems Laboratories, NTT Corporation, 3-1, Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan |
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Abstract: | This paper reports the development of intermediate temperature-operating solid oxide fuel cell stacks using anode-supported planar cells with LaNi0.6Fe0.4O3 (LNF)cathode. We developed metallic separators with radial gas flow channels and an anode seal structure. To achieve good power-generating characteristics, we propose two cathode contact methods. According to a performance evaluation at 800 °C, power density of 0.5 W cm−2 is obtained at the current density of 1.0 A cm−2 when operating with a sufficient fuel amount, and power conversion efficiency of over 50% LHV is obtained at the current density of more than 0.2 A cm−2 when operating at a high fuel utilization rate. |
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Keywords: | SOFC Stack Anode-supported Metallic separator Cathode contact |
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