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
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?.