Direct hybridization of tin oxide/graphene nanocomposites for highly efficient lithium-ion battery anodes
用于高效锂离子电池阳极的氧化锡/石墨烯纳米复合材料的直接杂化
出版日期:2014
作者单位:DongOkShin(1)HunPark(2)Young-GiLee(1)KwangManKim(1)TaeHeeHan(2)1.ResearchSectionofPowerControlDevices,ElectronicsandTelecommunicationsResearchInstitute(ETRI),Yuseong,Daejeon,305-700,RepublicofKorea2.DepartmentofOrganicandNanoEngineering,HanyangUniversity,Seoul,133-791,RepublicofKorea杂志名称:Journal of Electroceramics
卷号:33
期数:44624
刊号:1385-3449
出版日期:2014
简介:AfaciledirecthybridizationroutetoprepareSnO2/graphenenanocompositesforLi-ionbatteryanodeapplicationisdemonstrated.UniformdistributionofSnO2nanoparticlesongraphenelayerswasenabledbyaone-stepchemicalsyntheticroute.TheoptimalcontentratioofSnO2andgraphenewasdeterminedfrommicroscopicobservationsandelectrochemicalstudies.ThenanocompositeanodewithSnO2loadinglevelofaround70-emclass="a-plus-plus">wt.%retainedreversiblecapacityof643.6?mAh/gafter50?cyclesandhighdischargecapacityof347.8?mAh/gatacurrentdensityof3000?mA/g,whichwassuperiortothatofgraphene-onlyelectrodesornanocompositeswithoverloadedSnO2nanoparticles.Takingadvantageofnano-sizedSnO2andanelectricallyconductiveandmechanicallyflexiblegraphenelayer,SnO2/graphenenanocompositeswithoptimizedSnO2contentexhibitexcellentelectrochemicalpropertiesaslithium-ionbatteryanodes.Ourstrategyoffersastraightforwardandhigh-throughputpathwayforcreatinganddirectinggraphene-basedfunctionalhybridsthroughsimplemixingandthermaltreatments,andmaybeusedtoassemblehigh-performanceLi-ionbatteries.
