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  • Fluorine-Doped Tin Oxide Nanocrystal/Reduced Graphene Oxide Composites as Lithium Ion Battery Anode Material with High Capacity and Cycling Stability

    掺氟氧化锡纳米晶体/还原氧化石墨烯复合材料高容量循环稳定性锂离子电池正极材料

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    标签: fluorine-doped tin oxide reduced graphene oxide anode capacity cycling stability

    出版日期:2015

    作者单位:HaipingXu鈥?/sup>,LiyiShi鈥?/sup>,ZhuyiWang*鈥?/sup>,JiaLiu鈥?/sup>,JiefangZhu鈥?/sup>杂志名称:ACS Applied Materials & Interfaces
    卷号:7
    期数:49
    刊号:1944-8244
    出版日期:2015

    简介:Tinoxide(SnO2)isakindofanodematerialwithhightheoreticalcapacity.However,thevolumeexpansionandfastcapabilityfadingduringcyclinghavepreventeditspracticalapplicationinlithiumionbatteries.Herein,wereportthatthenanocompositeoffluorine-dopedtinoxide(FTO)andreducedgrapheneoxide(RGO)isanidealanodematerialwithhighcapacity,highratecapability,andhighstability.TheFTOconductivenanocrystalsweresuccessfullyanchoredonRGOnanosheetsfromanFTOnanocrystalscolloidandRGOsuspensionbyhydrothermaltreatment.Astheanodematerial,theFTO/RGOcompositeshowedhighstructuralstabilityduringthelithiationanddelithiationprocesses.TheconductiveFTOnanocrystalsfavortheformationofstableandthinsolidelectrolyteinterfacefilms.Significantly,theFTO/RGOcompositeretainsadischargecapacityashighas1439mAhg鈥?after200cyclesatacurrentdensityof100mAg鈥?.Moreover,itsratecapacitydisplays1148mAhg鈥?atacurrentdensityof1000mAg鈥?.

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