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Issue 17, 2018
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Mesoporous La0.6Ca0.4CoO3 perovskites with large surface areas as stable air electrodes for rechargeable Zn–air batteries

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Abstract

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 (>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.

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

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Publication details

The article was received on 13 Jan 2018, accepted on 17 Mar 2018 and first published on 19 Mar 2018


Article type: Paper
DOI: 10.1039/C8TA00426A
Citation: J. Mater. Chem. A, 2018,6, 7686-7692
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    Mesoporous La0.6Ca0.4CoO3 perovskites with large surface areas as stable air electrodes for rechargeable Zn–air batteries

    T. Ishihara, L. M. Guo, T. Miyano, Y. Inoishi, K. Kaneko and S. Ida, J. Mater. Chem. A, 2018, 6, 7686
    DOI: 10.1039/C8TA00426A

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