Preparation of the electrode for high temperature PEFCs using novel polymer electrolytes based on organic/inorganic nanohybrids

Osamu Nishikawa, Toshiya Sugimoto, Shigeki Nomura, Kazuo Doyama, Kenji Miyatake, Hiroyuki Uchida, Masahiro Watanabe

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Novel organic/inorganic hybrid electrolytes have been designed for high temperature polymer electrolyte fuel cells (PEFCs). The hybrid electrolyte membranes were synthesized from 1,8-bis(triethoxysilyl)octane (TES-Oct) and 3-(trihydroxysilyl)-1-propanesulfonic acid ((THS)Pro-SO3H) via sol-gel process. The membranes with sulfonic acid groups covalently bonded to the silica show higher proton conductivity of 5 × 10-2 S/cm at 160°C than that of previously reported homologous materials containing phosphotungstic acid as acid function. A series of electrodes with different composition of the organic/inorganic nanohybrid materials to the platinum loaded carbon has been prepared in order to elucidate the availability of the electrolytes in the catalyst layer. By optimizing the composition of the nanohybrids, high electrode performance comparable to that using Nafion® ionomer has been obtained. The novel organic/inorganic hybrid materials have proved to be a promising material as the ionomer in the electrodes and the electrolyte membranes for high temperature PEFCs.

本文言語English
ページ(範囲)667-672
ページ数6
ジャーナルElectrochimica Acta
50
2-3 SPEC. ISS.
DOI
出版ステータスPublished - 2004 11 30
外部発表はい

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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