Macrocycles for Fuel Cell Cathodes

K. Oyaizu, H. Murata, Makoto Yuasa

研究成果: Chapter

1 被引用数 (Scopus)

抄録

The direct four-electron reduction of O2 to H2O is an important issue in developing efficient cathode catalysts for fuel cells. Cobaltporphyrins have been demonstrated to serve as catalysts for the four-electron reduction of O2, especially in the forms of dicobalt cofacial porphyrins and multinuclear cobaltporphyrins. Simple cobaltporphyrins with spontaneous face-to-face aggregation properties are also expected as efficient catalysts. For practical application as fuel cell cathode catalysts, it is necessary to use cobaltporphyrins dispersed on carbon particles with high surface area. Here, the recent developments on porphyrin-based catalysts and attempts to prepare face-to-face aggregates of cobaltporphyrins adsorbed dispersively on carbon black are summarized. The catalyst has been prepared by using a homogenizer in mixing cobaltporphyrin and carbon black, which gives rise to electroreduction of O2 at a remarkably positive potential and shows a high selectivity for the direct four-electron reduction process.

本文言語English
ホスト出版物のタイトルSpringer Series in Materials Science
出版社Springer Verlag
ページ139-162
ページ数24
DOI
出版ステータスPublished - 2009 1 1

出版物シリーズ

名前Springer Series in Materials Science
111
ISSN(印刷版)0933-033X
ISSN(電子版)2196-2812

ASJC Scopus subject areas

  • Materials Science(all)

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