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
Yu, Aibing
中科院分区:
工程技术2区
文献类型:
--
作者:
Xu, Huarui;Xu, Huarui;Yu, Aibing;Yu, Aibing

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在中性条件下,以高锰酸钾和十二烷基硫酸钠为原料,采用水热法在另一种三维结构的泡沫镍上沉积了一种新型的三维多孔MnO2薄膜。粉末X射线衍射、扫描电子显微镜和热分析表明,所形成的三维结构薄膜是由纳米片状或纳米纤维组成的,具有无定形和水合的性质。用循环伏安法和1MNa2SO4水溶液中的恒流充放电循环研究了241Fg−1在1Ag−1电流密度下的高比电容。该薄膜具有良好的可逆性、功率特性和循环稳定性。它在超级电容器中有很好的应用前景。
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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发表时间: 2008-03-20
影响因子: 3.7
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