MnO2 film with three-dimensional structure prepared by hydrothermal process for supercapacitor
MnO2 film with three-dimensional structure prepared by hydrothermal process for supercapacitor
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水热法制备超级电容器三维结构MnO2薄膜
DOI:
10.1016/j.jpowsour.2011.10.051
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发表时间:
2012-02
影响因子:
9.2
通讯作者:
Yu, Aibing
中科院分区:
文献类型:
--
作者:
Xu, Huarui;Xu, Huarui;Yu, Aibing;Yu, Aibing
A novel three-dimensional (3D) porous MnO2film has been deposited onto a foamed nickel with another 3D structure by a hydrothermal method using potassium permanganate and sodium dodecylsulfate under neutral condition. Characterized by powder X-ray diffraction, scanning electron microscopy and thermal analysis, so formed 3D structure film is composed of nanosheets or nanofibers and has an amorphous and hydrous nature. The high specific capacitance of 241Fg−1is observed at the current density of 1Ag−1, investigated by means of cyclic voltammetry and constant current charge–discharge cycling in 1M Na2SO4aqueous solutions. The film shows a good reversibility, power characteristics and cycling stability. It is promising for supercapacitor application.
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