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Comparative Study of Ammonia‐fueled Solid Oxide Fuel Cell Systems

2017; Wiley; Volume: 17; Issue: 3 Linguagem: Inglês

10.1002/fuce.201600165

1615-6854

Takeou Okanishi, Keisho Okura, Atthapon Srifa, Hiroki Muroyama, Toshiaki Matsui, Masashi Kishimoto, M. Saito, Hiroshi Iwai, Hideo Yoshida, M. Saito, Tomoyo Koide, Hiroshi Iwai, Shinsuke Suzuki, Yosuke Takahashi, Toshitaka Horiuchi, H Yamasaki, S. Matsumoto, Shuji Yumoto, Hidehito Kubo, Jun Kawahara, Akihiro Okabe, Yuki Kikkawa, Taiji Isomura, Koichi Eguchi,

Ammonia Synthesis and Nitrogen Reduction

Abstract Several solid oxide fuel cell (SOFC) systems can be considered for the NH 3 utilization. In this study, the catalytic activity and long‐term stability of the NH 3 decomposition reactor with the Ni/Y 2 O 3 ‐based catalysts and the autothermal NH 3 cracker with the Co–Ce–Zr composite oxide catalyst were investigated. Moreover, the NH 3 decomposition reactor and the autothermal NH 3 cracker were combined with the SOFC stack and their performances of the stack were compared to those fueled with NH 3 and H 2 /N 2 . The power output of each SOFC stack was over 200 W. Moreover, it was demonstrated that the direct NH 3 ‐fueled SOFC stack was stable for 1,000 h at 770 °C without significant degradation.