Strategies for Improving Solubility of Redox‐Active Organic Species in Aqueous Redox Flow Batteries: A Review
Strategies for Improving Solubility of Redox‐Active Organic Species in Aqueous Redox Flow Batteries: A Review
复制标题
提高水系氧化还原液流电池中氧化还原活性有机物质溶解度的策略：综述
DOI：
10.1002/batt.202200298
复制
发表时间：
2022
影响因子：
5.7
通讯作者：
Jiang, Jianbing “Jimmy”
中科院分区：
文献类型：
--
作者：
Wang, Xiao;Gautam, Rajeev K.;Jiang, Jianbing “Jimmy”
氧化还原液流电池（RFB）因其安全性高、使用寿命长以及能源与电力解耦设计而成为最有前途的大规模储能技术之一。然而，成本高、能量密度低等问题限制了其进一步发展。有机氧化还原活性材料的成本优势和可调结构促进了有机RFB的发展。氧化还原剂的溶解度被认为是直接影响能量密度的参数。在此，我们重点关注提高有机氧化还原剂在水性 RFB 中溶解度的策略。系统、详尽地描述了掺入不同亲水官能团对氧化还原剂溶解度的影响及其对其他电池性能的影响。还总结了其他策略，例如分子对称性调节和使用更可溶的抗衡离子和共溶剂。还讨论了有机RFB的发展趋势和前景。
Redox flow batteries (RFB) have emerged as one of the most promising technologies for large‐scale energy storage owing to their high safety, long operation life, and decoupled design of energy and power. However, the problems of high cost and low energy density restrict their further development. The cost merit and tunable structure of organic redox‐active materials have prompted the development of organic RFBs. The solubility of the redoxmer is recognized as a parameter that contributes directly to the energy density. Herein, we focus on strategies for enhancing the solubility of organic redoxmers in aqueous RFBs. The effects of incorporating different hydrophilic functional groups on the solubility of the redoxmer and its effect on the performance of other batteries are systematically and exhaustively described. Other strategies, such as molecular symmetry tuning and employing more soluble counterions and cosolvents, are also summarized. The development trends and prospects for organic RFBs are also discussed.