采用低温熔盐法在150 ℃的KCl-AlCl3体系中制备了MnO2,并对其结构和形貌进行表征,XRD结果表明所制样品主相为α-MnO2,SEM结果表明样品为微米级片状结构.以所制备的MnO2作为电极活性物质,在2 mol/L的(NH4)2SO4电解液中对其电化学性质进行测试和研究.循环伏安结果表明该材料具有良好的电容性能,用恒流充放电测得在1 mA条件下,放电比电容可达290.72 F·g-1.经5 mA恒电流循环100次后电极性能趋于稳定,充放电效率接近100%,表现出优异的循环性能.
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