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Issue 1, 2017
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Mixing effects of Cr2O3–PrBaMn2O5 for increased redox cycling properties of Fe powder for a solid-oxide Fe–air rechargeable battery

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Abstract

Large capacity rechargeable batteries are now strongly required for generating electric power from renewable energy, like solar cells or wind power generators. For this purpose, solid oxide Fe–air rechargeable batteries have been studied. In this study, for increasing the stability of the redox cycling properties of Fe powder at 623 K, mixing effects of Cr2O3 and PrBaMn2O5 catalysts were investigated and it was found that Fe powder mixed with 3 wt% Cr2O3–3 wt% PrBaMn2O5 showed excellent stability against redox cycling at 623 K. When Fe powder mixed with Cr2O3–PrBaMn2O5 was used, stable charge and discharge capacity could be achieved over 50 cycles by using the cell consisting of Ni–Fe/La0.9Sr0.1Ga0.8Mg0.2O3/Ba0.6La0.4CoO3. The discharge capacity of the cell achieved was larger than 770 mA h gFe−1 at 623 K. Increased capacity and cycle performance could be assigned to the deep redox degree of Fe powder.

Graphical abstract: Mixing effects of Cr2O3–PrBaMn2O5 for increased redox cycling properties of Fe powder for a solid-oxide Fe–air rechargeable battery

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Publication details

The article was received on 12 Sep 2016, accepted on 19 Nov 2016 and first published on 21 Nov 2016


Article type: Paper
DOI: 10.1039/C6TA07911C
Citation: J. Mater. Chem. A, 2017,5, 364-371
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    Mixing effects of Cr2O3–PrBaMn2O5 for increased redox cycling properties of Fe powder for a solid-oxide Fe–air rechargeable battery

    H. Kim, S. Ida, Y. Ju, J. Matsuda, G. Kim and T. Ishihara, J. Mater. Chem. A, 2017, 5, 364
    DOI: 10.1039/C6TA07911C

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