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SIP
Article

SIP "Energy Carriers" video: ammonia turbines, industrial furnaces, fuel cells

Trevor Brown October 13, 2017

To demonstrate the progress of the SIP "Energy Carriers" program, the Japan Science and Technology Agency last week released a video, embedded below, that shows three of its ammonia fuel research and development projects in operation. R&D is often an abstract idea: this video shows what it looks like to generate power from ammonia. As it turns out, fuel cells aren't hugely photogenic. Nonetheless, if a picture is worth a thousand words, this will be a long article.

Ammonia Fuel Cells: SOFC stack test and system analysis
Article

Ammonia Fuel Cells: SOFC stack test and system analysis

Trevor Brown October 07, 2016

New research, recently published in the International Journal of Hydrogen Energy, demonstrates that solid oxide fuel cell (SOFC) systems fueled with ammonia could be "more efficient than equivalent hydrogen-based" systems. This new paper comes out of the Fuel Cell Lab at the University of Perugia, in Italy, and builds upon years of research coming out of that laboratory on the use of ammonia and urea in fuel cells.

Presentation

Research and Development of Ammonia-fueled SOFC Systems

Koichi EguchiAtthapon SrifaTakeou OkanishiHiroki MuroyamaToshiaki MatsuiMasashi KishimotoMotohiro SaitoHiroshi IwaiHideo YoshidaMasaki SaitoTakeshi KoideHiroyuki IwaiShinsuke SuzukiYosuke TakahashiToshitaka HoriuchiHayahide YamasakiShohei MatsumotoShuji YumotoHidehito KuboJun KawaharaAkihiro OkabeYuki KikkawaTakenori 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 OkanishiKaname OkuraJun YangHiroki MuroyamaToshiaki MatsuiMasashi KishimotoMotohiro SaitoHiroshi IwaiHideo YoshidaKoichi EguchiHiroyuki IwaiK. InaokaShinsuke SuzukiYosuke TakahashiToshitaka HoriuchiHayahide YamasakiHideyuki MatsumotoHidehito KuboJun KawaharaAkihiro OkabeYuki KikkawaT. NegishiS. 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

Presentation

Research and development of NH3-fueled solid-state fuel cell systems

Hiroki MuroyamaJun YangKaname OkuraTakeou OkanishiToshiaki MatsuiMotohiro SaitoHiroshi IwaiHideo YoshidaKoichi Eguchi

Ammonia is a prospective carbon-free fuel source for fuel cell systems due to low production cost, ease in liquefaction at ambient temperatures, and high energy density. Furthermore, hydrogen and nitrogen originating from ammonia fuel are expected to have little negative effect on fuel cell performance, while hydrocarbon fuels draws some severe problems at electrodes, such as CO poisoning or carbon deposition in low- and high-temperature fuel cells, respectively. Several technologies can be considered for the ammonia utilization in fuel cell systems. For the utilization of ammonia fuel, we aim to develop a system combined with ammonia decomposition reactor and solid-state…

A Green Ammonia Economy
Presentation

A Green Ammonia Economy

Yoshitsugu Kojima

Ammonia has a high volumetric hydrogen density of 107.3 kg H2 per cubic meter, because it is easily liquefied by compression below 0.86 MPa at 20° C. The vapor pressure of liquefied ammonia is similar to propane. Moreover it has a high gravimetric hydrogen density of 17.8 mass% compared with the solid state hydrogen storage materials. It is noteworthy that ammonia can be synthesized from hydrogen in large scale manufacturing by Haber–Bosch process at 400-600° C and 20-40 MPa. Therefore, liquid ammonia is one of the most promising methods for storing and transporting hydrogen. CO2 free hydrogen (ammonia) will be…