Synthesis of reduced graphene oxide / Mn<sub>3</sub> O<sub>4 </sub>nanocomposites for supercapacitors

QU Jiang-ying|LI Yu-jia|LI Chuan-pen|SHI Lin|SHAO Guang-hua|GAO Feng

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Article Navigation > New Carbon Mater. > 2014 > 29(3): 186-192

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Synthesis of reduced graphene oxide / Mn₃ O₄nanocomposites for supercapacitors

QU Jiang-ying|LI Yu-jia|LI Chuan-pen|SHI Lin|SHAO Guang-hua|GAO Feng

Faculty of Chemistry and Chemical Engineering, Institute of Chemistry for Functionalized Materials, Liaoning Normal University, Dalian 116029, China|
Analytical and Testing Center of BeiHua University,Jilin 132013, China|
Carbon Research Laboratory, School of Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116012, China

Funds: National Natural Science Foundation of China (50902066); Foundation of Key Laboratory for Micro/ Nano Tech鄄 nology and System of Liaoning Province & Key Laboratory for Microsystem and Microfabrication of the Education Department of Liaoning Province (20110303); China Postdoctoral Science Foundation (2013M530922).

Received Date: 2013-11-25
Accepted Date: 2014-07-01
Rev Recd Date: 2014-04-09
Publish Date: 2014-06-30

Abstract

Abstract

Reduced graphene oxide/ Mn₃O₄(rGO/ Mn₃O₄ ) nanocomposites were prepared from MnSO₄ and GO produced by a modified Hummers method. The GO was deoxygenated by heat treatment, and MnO₂generated by hydrolysis of MnSO₄ was simul-taneously reduced to Mn₃O₄. The Mn₃O₄ content in the composites could be tailored by the volume of supernatant in the pristine GO/ MnSO₄ suspension. The maximum specific capacitance of the rGO/ Mn₃O₄ composite is 284 F·g ^-1 at 50 mA·g ^-1 as an anode material in a saturated K₂SO₄ solution. This approach separates GO from the suspension without complicated procedures, and cheap MnSO₄ is used as a Mn₃O₄source
- Graphene,
- Manganese tetroxide,
- Green synthesis,
- Composite materials,
- Supercapacitor