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Synthesis of a MnO2 Nanosheet/Graphene Flake Composite and Its Application as a Supercapacitor having High Rate Capability

Authors

  • Dr. Qingxin Chu,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Juan Du,

    1. Agricultural Economy and Information Service Center, Jilin Academy of Agricultural Sciences, Changchun, 130033 Jilin (P. R. China)
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  • Wenbo Lu,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Guohui Chang,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Zhicai Xing,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Haiyan Li,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Chenjiao Ge,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Lei Wang,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Yonglan Luo,

    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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  • Abdullah M. Asiri,

    1. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
    2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
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  • Abdulrahman O. Al-Youbi,

    1. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
    2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
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  • Prof. Xuping Sun

    Corresponding author
    1. State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
    2. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
    3. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)
    • State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin (P. R. China), Fax: (+86) 431-85262065
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Abstract

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Hydrothermal treatment of KMnO4 and graphene flakes (GFs) leads to MnO2 nanosheets decorated on GFs. The resulting MnO2/GF (MG) composite has been tested as a supercapacitor electrode in aqueous electrolyte and found to exhibit good cycling stability with a specific capacitance of 147 Fg−1 at a current density of 5 Ag−1 (see figure).

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