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Presentation

Development of Catalytic Reactors and Solid Oxide Fuel Cells Systems for Utilization of Ammonia

Koichi Eguchi Yosuke Takahashi Takahiro Matsuo Hayahide Yamasaki Hidehito Kubo Akihiro Okabe Takenori Isomura

Hydrogen is the primary fuel source for fuel cells. However, the low volume density and difficulty in storage and transportation are major obstacles for the practical utilization. Among various hydrogen carriers, ammonia is one of the promising candidates because of its high hydrogen density and boiling point and ease in liquefaction and transportation. The reaction temperature of ammonia cracking to nitrogen and hydrogen, being about 600°C or higher, is close to the operating temperature of solid oxide fuel cells (SOFCs). The integration of these two devices is beneficial in terms of heat and energy managements and will lead to the…

Presentation

Development of Materials and Systems for Ammonia-Fueled Solid Oxide Fuel Cells

Koichi Eguchi Yosuke Takahashi Hayahide Yamasaki Hidehito Kubo Akihiro Okabe Takenori Isomura Takahiro Matsuo

Hydrogen is the primary fuel source for fuel cells. However, the low volume density and difficulty in storage and transportation are major obstacles for the practical utilization. On-site generation of hydrogen from its carrier is an effective method for the fuel supply. Among various hydrogen carriers, ammonia is one of the promising candidates. Ammonia has high hydrogen density. The boiling point of ammonia is relatively high, leading to the ease in liquefaction and transportation. Hydrogen can be produced from ammonia with a mildly endothermic process. The reaction temperature of ammonia cracking is about 600˚C or higher which is close to…

Presentation

Research and Development of Ammonia-fueled SOFC Systems

Koichi Eguchi Atthapon Srifa Takeou Okanishi Hiroki Muroyama Toshiaki Matsui Masashi Kishimoto Motohiro Saito Hiroshi Iwai Hideo Yoshida Masaki Saito Takeshi Koide Hiroyuki Iwai Shinsuke Suzuki Yosuke Takahashi Toshitaka Horiuchi Hayahide Yamasaki Shohei Matsumoto Shuji Yumoto Hidehito Kubo Jun Kawahara Akihiro Okabe Yuki Kikkawa Takenori Isomura

Ammonia is a promising hydrogen carrier because of its high hydrogen density, low production cost, and ease in liquefaction and transport. Ammonia decomposes into nitrogen and hydrogen through a mildly endothermic process. The ammonia decomposition temperature is close to the operating conditions of solid oxide fuel cells (SOFCs). Therefore, the integration of these two devices is beneficial in terms of efficient heat and energy managements and will lead to the development of simplified generation systems. We have investigated three types of ammonia-fueled SOFC systems. In one system, ammonia is directly supplied to the anode chamber. Ammonia decomposes into nitrogen and…

Presentation

Current progress in development of NH3-fueled solid-state fuel cell systems

Takeou Okanishi Kaname Okura Jun Yang Hiroki Muroyama Toshiaki Matsui Masashi Kishimoto Motohiro Saito Hiroshi Iwai Hideo Yoshida Koichi Eguchi Hiroyuki Iwai K. Inaoka Shinsuke Suzuki Yosuke Takahashi Toshitaka Horiuchi Hayahide Yamasaki Hideyuki Matsumoto Hidehito Kubo Jun Kawahara Akihiro Okabe Yuki Kikkawa T. Negishi S. Watanabe

Current progress in development of NH3-fueled solid-state fuel cell systems T. Okanishi*, K. Okura, J. Yang, H. Muroyama, T. Matsui, M. Kishimoto, M. Saito, H. Iwai, H. Yoshida, K. Eguchi, Kyoto University; H. Iwai, K. Inaoka, S. Suzuki, Y. Takahashi, Noritake; T. Horiuchi, H. Yamasaki, Nippon Shokubai; S. Matsumoto, H. Kubo, Toyota Industries; J. Kawahara, A. Okabe, Mitsui Chemical; Y. Kikkawa, T. Negishi, S. Watanabe, Tokuyama