Macrocycles for Fuel Cell Cathodes

K. Oyaizu, H. Murata, Makoto Yuasa

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)


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.

Original languageEnglish
Title of host publicationSpringer Series in Materials Science
PublisherSpringer Verlag
Number of pages24
Publication statusPublished - 2009 Jan 1

Publication series

NameSpringer Series in Materials Science
ISSN (Print)0933-033X
ISSN (Electronic)2196-2812


  • Carbon Black
  • Cathode Catalyst
  • Membrane Electrode Assembly
  • Porphyrin Ring
  • Rotate Disk Electrode

ASJC Scopus subject areas

  • Materials Science(all)


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