以电解二氧化锰(EMD)为原料,采用水热法对其进行改性.XRD、SEM测试表明,改性后MnO2的结晶程度增加,且呈纳米线型,团聚明显减少.循环伏安测试表明,水热改性后样品具有典型的法拉第赝电容特性,单电极放电比容量由140.94F/g提高到176.41F/g,提高了25.17%.样品在恒电流充放电循环100次后比容量衰减不大,充放电效率接近100%.
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