Nonaqueous redox flow batteries (NARFBs) have the potential as high-energy-density electrochemical storage systems due to their wider electrochemical windows compared with their aqueous counterpart. Before possible commercial application, three major performance metrics (energy density, power density, and cycling stability) of NARFBs need to be improved. With molecular diversity and scalability, redox-active organic materials (ROMs) are considered as promising redox-active materials for establishing sustainable NARFBs. Reasonable molecular engineering ROMs can obtain desired physicochemical properties, leading to the improvement of battery performance metrics. This mini review comprehensively summarizes the NARFB improvement through molecular engineering ROMs over the recent years, aiming to provide a guideline for the future battery design.

非水系氧化还原液流电池 (NARFBs) 具有作为高能量密度电化学存储系统的潜力，因为与水系对应物相比，它们具有更宽的电化学窗口。在可能的商业应用之前，需要改进 NARFB 的三个主要性能指标（能量密度、功率密度和循环稳定性）。凭借分子多样性和可扩展性，氧化还原活性有机材料 (ROM) 被认为是用于建立可持续 NARFB 的有前景的氧化还原活性材料。合理的分子工程ROM可以获得所需的物理化学性质，从而提高电池性能指标。这篇迷你综述全面总结了近年来通过分子工程 ROM 对 NARFB 的改进，旨在为未来的电池设计提供指导。