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混合水溶液K+超级电容器AC//Na0.7MnO2.05的研究

Xin-hai YUAN,Zhi-an WANG, Qiang MA,Yuan-fu XIONG,Xiong-wei WU

Guangzhou Chemistry（2016）

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Abstract
制备并表征了棒状水钠锰矿Na0.7MnO2.05,研究了其在K2SO4水溶液中电化学性能和制作成电容器的性能.结果表明:在0.5 M K2SO4水溶液中具有优异的高功率性能和循环性能;其和活性炭组成的混合超级电容器在400 W/kg和2.18 kW/kg的功率密度下,能量密度分别高达18 Wh/kg和14.2 Wh/kg,具有较好的循环性能,在1A/g的电流密度下,5 000次循环后,电容量还保持有90％.
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