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Synthesis of CaMn2O4-related electrocatalyst for oxygen evolution electrode of water-splitting

  • Yuya Taki (a1), Zhenquan Tan (a2), Satoshi Ohara (a2), Takashi Itoh (a3), Yoshiaki Nakano (a1), Katsushi Fujii (a1) (a4) and Masakazu Sugiyama (a1)...
Abstract
ABSTRACT

Water-splitting by using electric power produced by solar cells is promising system to produce hydrogen without fossil fuels. Oxygen evolving catalyst is, however, major problem to prevent using this system widely because precious materials are used in the catalyst. Considering from the photosynthesis II of plants, the compound of Ca-Mn-O is one of the candidates for the oxygen evolving catalyst. In this study, the synthesis condition and the oxygen evolving electrocatalytic activity of CaMn2O4•xH2O are investigated. The overpotential at 0.1 mA/cm2 was 0.28 V when using the electrode of carbon paste and CaMn2O4•H2O with the weight ratio of 3:1.

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MRS Online Proceedings Library (OPL)
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  • EISSN: 1946-4274
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