通过热分解法在Ti基体上制备了不同Sn含量的IrO2-SnO2涂层.采用循环伏安(Cv),恒流充放电和透射电镜(TEM)等测试方法分析了涂层的电容性能和组织结构的关系.结果表明,所制备的IrO2-SnO2涂层电极的比电容随Sn含量的增加呈先增后减的变化,电极材料的可逆性和快速充放电性能逐渐得到改善.在Sn含量为70 mol％时,有最大的比电容值485.07 F/g.该涂层以非晶态结构为主,其中含有尺寸分布均匀,大小约1 nm的微晶,增大了活性点的面积,比纯IrO2电极的比电容提高了7.5倍.
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