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Issue 40, 2011
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Chloride supporting electrolytes for all-vanadium redox flow batteries

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Abstract

This paper examines vanadium chloride solutions as electrolytes for an all-vanadium redox flow battery. The chloride solutions were capable of dissolving more than 2.3 M vanadium at varied valence states and remained stable at 0–50 °C. The improved stability appeared due to the formation of a vanadium dinuclear [V2O3·4H2O]4+ or a dinuclear-chloro complex [V2O3Cl·3H2O]3+ in the solutions over a wide temperature range. The all-vanadium redox flow batteries with the chloride electrolytes demonstrated excellent reversibility and fairly high efficiencies. Only negligible, if any, gas evolution was observed. The improved energy capacity and good performance, along with the ease in heat management, would lead to substantial reduction in capital cost and life-cycle cost, making the vanadium chloride redox flow battery a promising candidate for stationary applications.

Graphical abstract: Chloride supporting electrolytes for all-vanadium redox flow batteries

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Publication details

The article was received on 17 Aug 2011, accepted on 25 Aug 2011 and first published on 15 Sep 2011


Article type: Paper
DOI: 10.1039/C1CP22638J
Citation: Phys. Chem. Chem. Phys., 2011,13, 18186-18193
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    Chloride supporting electrolytes for all-vanadium redox flow batteries

    S. Kim, M. Vijayakumar, W. Wang, J. Zhang, B. Chen, Z. Nie, F. Chen, J. Hu, L. Li and Z. Yang, Phys. Chem. Chem. Phys., 2011, 13, 18186
    DOI: 10.1039/C1CP22638J

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