A Multielectron and High-Potential Spirobifluorene-Based Posolyte for Aqueous Redox Flow Batteries,Angewandte Chemie International Edition

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A Multielectron and High-Potential Spirobifluorene-Based Posolyte for Aqueous Redox Flow Batteries
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2024-07-20 , DOI: 10.1002/anie.202410226
Pan Wang ₁ , Shuai Pang ₂ , Lu Li ₂ , Yunlong Ji ₃

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This research addresses a critical challenge in developing multielectron positive electrolyte (posolyte) with high redox potential for aqueous organic redox flow batteries (AORFBs) as an advanced energy storage technology. The chlorinated spirobifluorene ammonium salts (CSFAs) is synthesized via a green chlorination-protection mechanism during the initial battery cycling, leveraging side reactions to develop new redox species. A full battery using CFSA-Cl achieved over 99.4 % coulombic efficiency and 95 % capacity utilization for 250 stable cycles.

中文翻译：

用于水系氧化还原液流电池的多电子和高电位螺二芴基正电解质

这项研究解决了开发具有高氧化还原电位的多电子正电解质（posolyte）用于水性有机氧化还原液流电池（AORFB）作为先进储能技术的关键挑战。氯化螺二芴铵盐（CSFA）是在初始电池循环过程中通过绿色氯化保护机制合成的，利用副反应开发新的氧化还原物质。使用 CFSA-Cl 的全电池在 250 个稳定循环中实现了超过 99.4% 的库仑效率和 95% 的容量利用率。

更新日期：2024-07-20

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