F. Hasan, C. Bejger
Keywords: redox flow batteries, organic
Summary:Redox flow batteries (RFBs) are promising energy storage devices that play a pivotal role in mitigating the gap between grid-scale energy demand and utilization. Conventional RFBs rely on acidic electrolytes and expensive vanadium-based salts. Nonaqueous organic RFBs are particularly attractive from a voltage standpoint but remain far less developed than their aqueous counterparts. Our group has been studying substituted radialene molecules as catholytes for RFBs. Here, we describe the synthesis and characterization of a series of functionalized radialenes based on cyanoacetamide and Meldrum’s acid derivatives. These radialenes support multielectron transfer and exhibit good solubility in acetonitrile. Electrochemical analysis, including galvanostatic cyclic charge-discharge studies, and flow cell tests on these compounds will also be presented.