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1、SynthesisandPerformanceofTitaniumDioxideCompositesasNegativeElectrodeMaterialforLithiumStorageAbstractSynthesisandPerformanceofTitaniumDioxideCompositesasNegativeElectrodeMaterialforLithiumStorageAbstractTransitionmetaloxideshavedrawnresearchattentionforapplicationsinthefieldoflithi
2、um-ionbatteriesandsupercapacitorsduetoitssuperiorelectrochemicalperformances.Titaniumdioxide,oneofthepromisingmaterials,hasbecomethefocusofrecentresearchesduetoitsadvantagessuchashighcyclingability,lowcost,environmentfriendly,andsafety.However,TiO2materialhaspoorelectricalconductivi
3、tyandslowdiffusionrateforlithium-ion.Thus,researcheshavebeendedicatedtosynthesisofnano-sizedTiO2bycombiningwithconductivecarbon,metal,ormetaloxidematerialtoincreaseitsconductivity.Inthiswork,weusecarbonnano-tube(CNT)asaframeworktocreatesandwichstructuredcompositesofC/MoO2@TiO2@CNTwh
4、eretheamorphouscarbonorMoO2serveasaconductiveshell.ThecompositeswerefurthercharacterizedwithSEM,TEM,andXRDtechniques.TheelectrochemicalperformancesofC/MoO2@TiO2@CNThavebeenevaluatedbyCV,constantcurrentcharging/discharging,andEISmethods.1.Throughhydrolysisofisopropyltitanatemixedwith
5、CNT,TiO2particlesareformedwithCNTcoveredonsurface.Afteroptimization,themixtureof1mmolofisopropyltitanateand25mgofCNTisusedtosynthesizeawellcoatedTiO2@CNTmaterial.Usingglucoseasacarbonsource,thesynthesizedTiO2@CNTisrestedina0.1Mglucosesolution.Afterpyrolysis,theC@TiO2@CNTwitha5nmthic
6、kand5.26%wt.ofcarbonlayeriscreated.Thissandwichstructurematerialshowsgreatelectrochemicalperformance.After100cyclesunderarateofC/5,thecarboncoatedmaterialmaintainsahighcapacityof176mAh/gcomparedto137mAh/gofuncoatedmaterial,whilehavingacoulombicefficiencyof98%.2.Throughhydrolysisofso
7、diummolybdateinanacidicenvironment,TiO2@CNTisIIIAbstractSynthesisandPerformanceofTitaniumDioxideCompositesasNegativeElectrodeMaterialforLithiumStoragesynthesizedwithalayerofMoO3coveredonsurface,thenthislayerisreducedtoMoO2underAr/H2environment,creatingaMoO2@TiO2@CNTcompositematerial
8、.Byinvestigatingthe
