EngineeringMaterials EngineeringMaterials ScienceElectrochemical EngineeringElectrochemistryEnergy MaterialsElectrochemical CellsElectrochemical Energy StorageElectrode MaterialsEnergy StorageNanoenergy MaterialsSupercapacitorsAsymmetric SupercapacitorsEnergy DensityGrapheneGraphene-based ElectrodesManganese OxidesNanosheetsPower DensitySolid-state Supercapacitors
An asymmetric supercapacitor with high energy density is designed using flower-like MoS<sub>2</sub> and MnO<sub>2</sub> grown on graphene nanosheets as the negative and positive electrodes, respectively. The device exhibits a high energy density of 78.9 W h kg<sup>−1</sup> at a power density of 284.1 W kg<sup>−1</sup>.
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