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METHOD FOR IMPROVING VANADIUM REDOX FLOW BATTERY PERFORMANCE BY SUPPRESSING H2 EVOLUTION AND BALANCING REDOX KINETICS USING ORGANIC MOLECULES
METHOD FOR IMPROVING VANADIUM REDOX FLOW BATTERY PERFORMANCE BY SUPPRESSING H2 EVOLUTION AND BALANCING REDOX KINETICS USING ORGANIC MOLECULES
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机译：通过抑制H2的释放和利用有机分子平衡氧化还原动力学来提高钒氧化还原流电池性能的方法
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ABSTRACT The present invention relates to a vanadium flow battery system development, more specifically relates to the beneficial effect of D-fructose as an additive to the negative electrolyte. The presence of D-fructose (i)enhances the area of the graphite felt negative electrode, by wetting, thereby the current dueto V2+/V3+ redox reaction at a given overpotential, (ii) suppresses the H2 evolution at negativeelectrode and (iii) controls the VO2+accumulation at the positive electrolyte by way of redox reaction between crossed-over D-fructose with VO2+. Theamount of VO2+reduced depends on the controlled addition of D-fructose via cross-over, which maintains the redox balance betweenthe negative and positive electrolyte. Hence, an optimization of concentration of D- fructoseat the negative electrode, could improve the capacity retention with number of cyclesin vanadium redox flow battery system.
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