用热分解法使Ir包覆到碳毡表面,经过50次循环充放电后Ir的附着良好.稳态极化和循环伏安实验结果表明,Ir修饰后的碳毡电极上V(Ⅳ)/V(V)的电荷转移极化电阻降低,Ir催化剂降低了V-O键打开和形成的活化能,从而降低了电池极化.以Ir修饰碳毡为电池正极、酸和热处理的碳毡为负极组成的全钒氧化还原液流电池,在20 mAcm-2充放电时的电压效率达87.5%.与用未经修饰的碳毡组成的电池相比,电压效率提高6.9%,内阻降低了25%.
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