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

Published online by Cambridge University Press:  06 May 2014

Yuya Taki ,
Zhenquan Tan ,
Satoshi Ohara ,
Takashi Itoh ,
Yoshiaki Nakano ,
Katsushi Fujii  and
Masakazu Sugiyama
Yuya Taki
Affiliation:
School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, JAPAN
Zhenquan Tan
Affiliation:
Joining and Welding Research Institute, Osaka University, 11-1, Mihogaoka, Ibaraki, Osaka, 567-0047, JAPAN
Satoshi Ohara
Affiliation:
Joining and Welding Research Institute, Osaka University, 11-1, Mihogaoka, Ibaraki, Osaka, 567-0047, JAPAN
Takashi Itoh
Affiliation:
Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3, Aramaki aza Aoba, Aoba-ku, Sendai 980-8578, JAPAN
Yoshiaki Nakano
Affiliation:
School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, JAPAN
Katsushi Fujii
Affiliation:
School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, JAPAN Global Solar plus Initiative, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, JAPAN
Masakazu Sugiyama
Affiliation:
School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, JAPAN
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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.

Keywords

oxidationenergy storageMn
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1640: Symposium Z – Sustainable Solar-Energy Conversion Using Earth-Abundant Materials , 2014 , mrsf13-1640-z10-56
Copyright
Copyright © Materials Research Society 2014 

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References

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