Investigations Into Aqueous Redox Flow Batteries Based on Ferrocene Bisulfonate
Investigations Into Aqueous Redox Flow Batteries Based on Ferrocene Bisulfonate
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DOI：
10.1021/acsaem.0c02259
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发表时间：
2020-10-26
影响因子：
6.4
通讯作者：
Boika, Aliaksei
中科院分区：
文献类型：
--
作者：
Zhao, Zhiling;Zhang, Baosen;Boika, Aliaksei
氧化还原液流电池（RFB）技术的成功实施需要开发可在水介质中使用的高度稳定且可溶的阴极电解液和阳极电解液材料。在本工作中，我们研究了一种高溶解性的二茂铁衍生物-基于循环伏安法和充电/放电循环实验的结果，我们确定该化合物可以是不稳定的，并且在某些支持电解质中容易受到阴离子的亲核攻击。然而，它在中性pH溶液中稳定，具有弱亲核阴离子，如硝酸根。这些研究结果是基础的改进RFB材料的未来发展。
The successful implementation of redox flow battery (RFB) technology requires the development of highly stable and soluble catholyte and anolyte materials that could be used in aqueous media. In this work, we investigated a highly soluble derivative of ferrocene-1,1'-bis(sulfonate)-ferrocene dianion disodium salt-as a possible catholyte in an all-anionic RFB design. Based on the results of cyclic voltammetry and charge/discharge cycling experiments, we determined that this compound can be unstable and prone to a nucleophilic attack by anions in certain supporting electrolytes. However, it is stable in neutral pH solutions with weak nucleophilic anions like nitrate. These findings are fundamental for the future development of improved RFB materials.