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Issue 8, 2018
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An all-aqueous redox flow battery with unprecedented energy density

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Abstract

Redox flow batteries are of particular interest because of the flexible power and energy storage originating from their unique architecture, but their low energy density has inhibited their widespread dissemination. In this work, a novel strategy of tuning the pH of the electrolyte environment is put forward to enhance the battery voltage, and eventually achieve the goal of high energy density for all-aqueous redox flow batteries. With this strategy, a hybrid alkaline zinc–iodine redox flow battery has been designed with a 0.47 V potential enhancement by switching the anolyte from acidic to basic, thus inspiring an experimental high energy density of 330.5 W h L−1. This is an unprecedented record to date for an all-aqueous redox flow battery.

Graphical abstract: An all-aqueous redox flow battery with unprecedented energy density

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Publication details

The article was received on 06 Mar 2018, accepted on 07 Jun 2018 and first published on 07 Jun 2018


Article type: Communication
DOI: 10.1039/C8EE00686E
Citation: Energy Environ. Sci., 2018,11, 2010-2015
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    An all-aqueous redox flow battery with unprecedented energy density

    J. Zhang, G. Jiang, P. Xu, A. Ghorbani Kashkooli, M. Mousavi, A. Yu and Z. Chen, Energy Environ. Sci., 2018, 11, 2010
    DOI: 10.1039/C8EE00686E

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