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A High-Energy-Density Redox Flow Battery based on Zinc/Polyhalide Chemistry

Authors

  • Liqun Zhang ,

    1. Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (PR China), Fax: (+86) 411 84665057
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039 (PR China)
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  • Dr. Qinzhi Lai,

    1. Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (PR China), Fax: (+86) 411 84665057
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  • Dr. Jianlu Zhang,

    1. Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (PR China), Fax: (+86) 411 84665057
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  • Prof. Huamin Zhang

    Corresponding author
    1. Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (PR China), Fax: (+86) 411 84665057
    • Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (PR China), Fax: (+86) 411 84665057
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Abstract

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Zn and the Art of Battery Development: A zinc/polyhalide redox flow battery employs Br/ClBr2− and Zn/Zn2+ redox couples in its positive and negative half-cells, respectively. The performance of the battery is evaluated by charge–discharge cycling tests and reveals a high energy efficiency of 81%, based on a Coulombic efficiency of 96% and voltage efficiency of 84%. The new battery technology can provide high performance and energy density at an acceptable cost.

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