Oxygen Reduction by Electrodes Modified with Aggregated Cobalt-porphyrin/Polymer Ligand Systems: Relation between Molecular Structure and Electrocatalytic Activity for Oxygen Reduction.

DOI Web Site 29 References
  • YUASA Makoto
    Fac. of Sci & Technol, Sci. Univ. of Tokyo Inst. of Colloid & Interface Sci, Sci. Univ of Tokyo
  • TORII Hiroyasu
    Fac. of Sci & Technol, Sci. Univ. of Tokyo
  • KUMEUCHI Tomokazu
    Fac. of Sci & Technol, Sci. Univ. of Tokyo
  • GOKITA Masanori
    Fac. of Sci & Technol, Sci. Univ. of Tokyo
  • SEKINE Isao
    Fac. of Sci & Technol, Sci. Univ. of Tokyo Inst. of Colloid & Interface Sci, Sci. Univ of Tokyo

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Other Title
  • 多量化コバルトポルフィリン／高分子配位子系を表面修飾した電極による酸素還元　分子構造と酸素還元電極触媒活性の関係
  • タリョウカ コバルト ポルフィリン コウブンシ ハイイシケイ オ ヒョウメン
  • Relation between Molecular Structure and Electrocatalytic Activity for Oxygen Reduction
  • 分子構造と酸素還元電極触媒活性の関係

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Abstract

Electrodes modified using aggregated cobalt-porphyrin/polymer ligand systems were prepared and electro-catalytic activity for oxygen (O2) reduction was investigated physicochemically. The maximum value of water yield due to O2 four-electron reduction was 56%. The apparent number of electrons involved in O2 reduction was 2.7 to 31. Two reactions due to O2 two- and four-electron reduction occurred on modified electrodes. Modification (adsorption) stability of the electrocatalyst system was over a few hours under hydrodynamic conditions.

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