An all-aqueous redox flow battery with unprecedented energy density†,Energy & Environmental Science

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An all-aqueous redox flow battery with unprecedented energy density†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-06-07 00:00:00 , DOI: 10.1039/c8ee00686e
Jing Zhang _{1,

2,

3,

4,

5} , Gaopeng Jiang _{1,

2,

3,

4,

5} , Pan Xu _{1,

2,

3,

4,

5} , Ali Ghorbani Kashkooli _{1,

2,

3,

4,

5} , Mahboubeh Mousavi _{1,

2,

3,

4,

5} , Aiping Yu _{1,

2,

3,

4,

5} , Zhongwei Chen _{1,

2,

3,

4,

5}

Affiliation

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.

中文翻译：

具有前所未有的能量密度的全水氧化还原液流电池†

氧化还原液流电池因其独特的结构具有灵活的功率和能量存储而特别受关注，但是其低能量密度阻碍了它们的广泛传播。在这项工作中，提出了一种调节电解质环境的pH值的新策略来提高电池电压，并最终实现全水氧化还原液流电池的高能量密度的目标。通过这种策略，通过将阳极电解液从酸性转换为碱性，设计了混合碱性锌-碘氧化还原液流电池，其电势增强了0.47 V，从而激发了330.5 W h L ^-1的实验性高能量密度。对于全水氧化还原液流电池，这是迄今为止前所未有的记录。

更新日期：2018-06-07

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