Aqueous organic redox flow batteries (AORFBs) have recently been attracting much attention due to their potential utilization as a sustainable solution for stationary energy storage. However, AORFBs have still to face various challenges to become a competitive technology to other mature redox flow batteries. Fading of the energy storage capacity upon cycling leading to insufficient lifetime is likely the most pressing issue. Several processes are contributing to this issue. Among the capacity fading promoters, the existence of side reactions such as water splitting and reactions related to oxygen reduction triggers an imbalanced state of charge for the catholyte and anolyte. Herein, a simple electrochemical balancing procedure is proposed and successfully demonstrated through the restoration of the oxidation states of the two half-cell solutions. The results reveal that it is possible to mitigate and even revert the effects of such side reactions, developing a useful method for mitigating the capacity fading and prolonging the cycling performance of AORFBs. In the two case studies, the implementation of this simple charging procedure leads to a remarkable 20-fold reduction of capacity fading (% h⁻¹). The protocol is a general approach for redox flow batteries, easily implementable and inexpensive.

水性有机氧化还原液流电池（AORFBs）由于其作为固定储能的可持续解决方案的潜在用途，最近备受关注。然而，AORFBs仍需面临各种挑战才能成为其他成熟氧化还原液流电池的竞争技术。循环时能量存储容量的衰减导致寿命不足可能是最紧迫的问题。有几个进程导致了这个问题。在容量衰减促进剂中，诸如水分解和与氧还原相关的反应等副反应的存在引发阴极电解液和阳极电解液的不平衡状态。在此，提出了一种简单的电化学平衡程序，并通过恢复两种半电池溶液的氧化态来成功证明。结果表明，可以减轻甚至逆转此类副反应的影响，从而开发出一种有效的方法来减轻容量衰减并延长 AORFB 的循环性能。在这两个案例研究中，这种简单的充电程序的实施导致容量衰减显着减少了 20 倍 (% h^-1 )。该协议是氧化还原液流电池的通用方法，易于实施且价格低廉。