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Preparation of MnO2/graphene composite as electrode material for supercapacitors

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Abstract

MnO2/graphene composite was synthesized by a facile and effective polymer-assisted chemical reduction method. The nanosized MnO2 particles 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−1 in 1 M Na2SO4 electrolyte. 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).

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Acknowledgements

The financial support for this work provided by the National Natural Science Foundation of China (21004009) and the Research Program of Jiangxi Province Department of Education (GJJ10093) is gratefully acknowledged.

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Authors and Affiliations

  1. Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, 344000, People’s Republic of China

    Yong Qian

  2. College of Life Science, Jiangxi Normal University, Nanchang, 330027, People’s Republic of China

    Shunbao Lu

  3. Nanomaterials & Chemistry Key Laboratory, Wenzhou University, Wenzhou, 325027, People’s Republic of China

    Fenglei Gao

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  1. Yong Qian
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  2. Shunbao Lu
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  3. Fenglei Gao
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Correspondence to Fenglei Gao.

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Qian, Y., Lu, S. & Gao, F. Preparation of MnO2/graphene composite as electrode material for supercapacitors. J Mater Sci 46, 3517–3522 (2011). https://doi.org/10.1007/s10853-011-5260-y

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  • DOI: https://doi.org/10.1007/s10853-011-5260-y

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