論文

2018年

Mesoporous La0.6Ca0.4CoO3 perovskites with large surface areas as stable air electrodes for rechargeable Zn-air batteries

Journal of Materials Chemistry A
  • T. Ishihara
  • ,
  • L. M. Guo
  • ,
  • T. Miyano
  • ,
  • Y. Inoishi
  • ,
  • K. Kaneko
  • ,
  • S. Ida

6
17
開始ページ
7686
終了ページ
7692
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1039/c8ta00426a
出版者・発行元
Royal Society of Chemistry

Large-capacity rechargeable batteries are becoming increasingly necessary for mobile devices, and the metal-air battery is currently the most promising for this application. Although Zn-air rechargeable batteries have a long research history, they remain far from commercialization due to their poor charge-discharge cycle life and are currently used only as primary batteries. One reason for this is the low stability of the air electrode against reversible operation. In this study, the extremely positive effects of a mesoporous nanosheet structure in La0.6Ca0.4CoO3 perovskite oxide - a non-precious metal air electrode catalyst - on the cycle life of the Zn-air battery (&gt
1000 cycles) with a high discharge potential of 1.15 V at 50 mA cm-2 are demonstrated. The high reversibility is a result of low activity toward carbon oxidation during the charge process, which may result from the large surface area of the porous nanosheet structure and also the high stability of the perovskite phase.

リンク情報
DOI
https://doi.org/10.1039/c8ta00426a
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85046420726&origin=inward

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