以分析纯V2O5为原料,利用双氧水还原的方法制备钒电解液,并对五氧化二钒的溶解机理进行了研究.通过UV-Vis光谱分析和ICP,对钒电解液在电解过程中钒离子的价态变化和浓度变化进行表征.通过计算,得到了钒电解液制备的反应焓变和吉布斯自由能变化,结果表明:生成硫酸氧钒的反应为放热反应,并且该反应促进了五价钒离子的溶解.将所制备的电解液组装成动态电池,在电流密度为2.4 mA/cm2时,电池的电流效率、电压效率、能量效率分别为93.6%、98.1%和91.9%,充放电结果表明:所制备的电解液具有很好的活性,可以应用于钒电池.
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