SOFC module and system development by means of sealless metallic separators with lanthanum gallate electrolyte

Jun Akikusa, Takashi Yamada, Takafumi Kotani, Naoya Murakami, Taner Akbay, Akihiro Hasegawa, Masaharu Yamada, Norikazu Komada, Sin Nakamura, Norihisa Chitose, Katsuya Hirata, Shigeru Sato, Takashi Miyazawa, Makoto Shibata, Kei Hosoi, Futoshi Nishiwaki, Toru Inagaki, Jiro Kano, Satoshi Ujiie, Takahiro MatsunamiHiroaki Nakajima, Junya Nishi, Tsunehisa Sasaki, Hiroyuki Yoshida, Koji Hashino, Mitsunobu Kawano, Satoru Yamasaki, Yusaku Takita, Tatsumi Ishihara

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4 Citations (Scopus)

Abstract

The third-generation 1- kWe -class module was developed with an automatic control system. A conversion efficiency of 48% ac/lower heating value [ac/LHV] was achieved with an exhaust heat recovery unit. An endurance test using the third-generation 1- kWe module was done for over 1000 h and no degradation of the power generation performance was observed. In parallel, a single-cell unit, which includes one cell and two metallic separators, was tested for over 10000 h and the degradation rate of the terminal voltage was found to be 1-2%1000 h. In the direction of scale-up, a triple-stack module of 3- kWe output was developed. A partial load as well as excess loads on the module were tested and the output power of 1-5 kWe was attained under thermally self-sustainable conditions. It was found that a high efficiency of 55% dc/lower heating value [dc/LHV] was obtained under stable operation. Ongoing research of the fourth-generation 1- kWe module has resulted in the conversion efficiency of 58% [dc/LHV].

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume153
Issue number3
DOIs
Publication statusPublished - Feb 13 2006

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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