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Electrochemical evaluation of La1 − x Ca x CoO3 cathode material for zinc air batteries application

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Abstract

We synthesized nano-sized La1 − x Ca x CoO3 (x = 0.1–0.4) cathode catalysts for zinc air secondary batteries by the citrate method, and measured electrochemical characteristics of the cathodes according to the cathode catalyst’s calcium content. We heat treated the prepared precursor at a calcination temperature of 700°C, and examined it by XRD analysis and electrochemical evaluation. We examined the prepared La1 − x Ca x CoO3 catalyst powder’s oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and cycle-stability performance. When we consider ORR, OER and cycle-stability performance simultaneously, La0.9Ca0.1MnO3 catalyst showed the best performance because of its lowest voltage deference between charge and discharge, and its lowest degradation according to cycle.

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Authors and Affiliations

  1. Battery Research Group, Korea Electrotechnology Research Institute (KERI), P.O. Box 20, Changwon, 641-600, Korea

    Seung-Wook Eom, Se-Young Ahn, Ik-Jun Kim & Hyun-Soo Kim

  2. Department of Chemical Engineering, Hanyang University, Seoul, 133-791, Republic of Korea

    Seung-Wook Eom & Yang-Kook Sun

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  1. Seung-Wook Eom
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  2. Se-Young Ahn
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  3. Ik-Jun Kim
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  5. Hyun-Soo Kim
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Correspondence to Seung-Wook Eom.

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Eom, SW., Ahn, SY., Kim, IJ. et al. Electrochemical evaluation of La1 − x Ca x CoO3 cathode material for zinc air batteries application. J Electroceram 23, 382 (2009). https://doi.org/10.1007/s10832-008-9472-8

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  • DOI: https://doi.org/10.1007/s10832-008-9472-8

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