全钒氧化还原液流电池集流体的性能

Properties of the current collector of all vanadium redox flow battery

用混炼法制备了以PP和SEBS共混物为基体材料、掺杂碳黑和碳纤维的高导电复合材料。用SEM、恒流充放电方法考察了复合材料的结构、形貌、力学性能及电化学性能。结果表明:导电介质在基体材料中高度分散,复合材料的体积电阻率小于0 1Ω·cm,组装的单体电池的充放电能量效率为84 5%。

A high-conductive composite was prepared with open-mixing method, based on PP(polypropylene) and SEBS(styrene-ethylene/butadiene-styrene) blended polymer through doping conductive carbon black and carbon fibre. The structures, configuration and electrochemical performance of the materials were studied by SEM and constant current charge-discharge. The results showed that conductive medium dispersed highly in the blended polymer and the volume resistance of the material was below (0.1 Ω·cm.) The energy efficiency of single vanadium redox flow battery assembled with the composite was 84.5%.