Preparation of MnO2/graphene composite as electrode material for supercapacitors
Preparation of MnO2/graphene composite as electrode material for supercapacitors
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超级电容器电极材料MnO2/石墨烯复合材料的制备
DOI：
10.1007/s10853-011-5260-y
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发表时间：
2011-05-01
影响因子：
4.5
通讯作者：
Gao, Fenglei
中科院分区：
文献类型：
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作者：
Qian, Yong;Lu, Shunbao;Gao, Fenglei
采用一种简便有效的聚合物辅助化学还原法制备了MnO2/石墨烯复合材料。扫描电子显微镜和透射电子显微镜分析表明，纳米MnO2粒子均匀分布在石墨烯纳米片上。用循环伏安法(CV)研究了MnO2/石墨烯复合材料的电容性能。MnO2/石墨烯复合材料具有324Fg−1/1M Na2SO4电解液的高比电容。此外，MnO2/石墨烯复合电极表现出良好的长期循环稳定性(1000次循环后，比电容仅下降3.2%)。
MnO2/graphene composite was synthesized by a facile and effective polymer-assisted chemical reduction method. The nanosized MnO2particles were homogeneously distributed on graphene nanosheets, which have been confirmed by scanning electron microscopy and transmission electron microscopy analysis. The capacitive properties of the MnO2/graphene composite have been investigated by cyclic voltammetry(CV). MnO2/graphene composite exhibited a high specific capacitance of 324 F g−1in 1 M Na2SO4electrolyte. In addition, the MnO2/graphene composite electrode shows excellent long-term cycle stability (only 3.2% decrease of the specific capacitance is observed after 1,000 CV cycles).