Journal of Materials Chemistry A · 2014 · 118 citations · 32 references
EngineeringGraphene NanomeshesChemical EngineeringGraphene Oxide SheetsElectron MicroscopySodium BatterySodium-ion BatteriesMaterials SciencePeroxostannate Deposition RouteBattery Electrode MaterialsEnergy StorageSolid-state BatteryElectrochemistryLi-ion Battery MaterialsMetal AnodeX-ray DiffractionGrapheneElectrochemical Energy StorageBatteriesAnode MaterialsReduced Graphene Oxide
A highly stable sodium ion battery anode was prepared by deposition of hydroperoxostannate on graphene oxide from hydrogen-peroxide-rich solution followed by sulfidization and 300 °C heat treatment. The material was characterized by electron microscopy, powder X-ray diffraction and X-ray photoelectron spectroscopy which showed that the active material is mostly rhombohedral SnS2 whose (001) planes were preferentially oriented in parallel to the graphene oxide sheets. The material exhibited >610 mA h g−1 charge capacity at 50 mA g−1 (with >99.6% charging efficiency) between 0 and 2 V vs. Na/Na+ electrode, high cycling stability for over 150 cycles and very good rate performance, >320 mA h g−1 at 2000 mA g−1.
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