Materials Research Innovations · 2015 · 17 citations · 34 references
EngineeringMaterials EngineeringMaterials ScienceElectrochemical EngineeringEnergy MaterialsNanomaterialsElectrochemical Energy StorageElectrode MaterialsEnergy StorageGraphene NanomaterialsNanoenergy MaterialsSupercapacitorsComposite Electrode MaterialsGrapheneGraphene-based ElectrodesManganese OxidesNanoparticlesNanosheetsSupercapacitor Energy StorageThermal Decomposition
MnO2 nanoparticles are anchored on the graphene nanosheets and make a graphene nanosheets/MnO2 (GMn) composite by thermal decomposition for application in supercapacitor. The GMn composite exhibits specific capacitance of 450 F g− 1 at 1 A g− 1, which is more than three times higher than that of as-prepared graphene sheets. Meanwhile, the composite shows excellent cycle stability without decline over 5000 cycles. The high electrochemical performance of the GMn electrodes is attributed to the prevention of graphene aggregation by the MnO2 nanoparticles, and the synergistic effects between graphene and MnO2 nanoparticles.
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A. K. Geǐm, Kostya S. Novoselov · Nature Materials · 2007 · 39.5K citations
Two-dimensional atomic crystals
Kostya S. Novoselov, Da Jiang, F. Schedin et al. · Proceedings of the National Academy of Sciences · 2005 · 11.6K citations · Full text