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1、www.afm-journal.dewww.MaterialsViews.comFULLPAPERSuper-AlignedCarbonNanotubeFilmsasCurrentCollectorsforLightweightandFlexibleLithiumIonBatteriesKeWang,ShuLuo,YangWu,XingfengHe,FeiZhao,JiapingWang,*KailiJiang,andShoushanFanprocesseswilloccurattheelectrod
2、e/Carbonnanotube(CNT)currentcollectorswithexcellentflexibility,extremelycurrentcollectorinterface,resultinginlowdensity(0.04mgcm−2),andtunablethicknessarefabricatedbycross-capacitylossorpoorperformanceathighrates.Thisproblemwillbecomemorestackingcontinuo
3、usCNTfilmsdrawnfromsuper-alignedCNTarrays.seriousinflexiblebatteries,wheredetach-Comparedwithmetalcurrentcollectors,betterwetting,strongeradhesion,mentsofelectrodematerialsfromcurrentgreatermechanicaldurability,andlowercontactresistancearedemonstratedcoll
4、ectorsareverylikelytotakeplaceuponattheelectrode/CNTinterface.ElectrodeswithCNTcurrentcollectorsshowbendingorfolding.Thirdly,metalcurrentimprovementsincyclingstability,ratecapability,andgravimetricenergyden-collectorsaresusceptibletolong-termsityovertho
5、sewithmetalcurrentcollectors.TheseresultssuggestthatCNTexposuretocorrosivechemicals.Degrada-tionresultingfromlocalizedpittingcor-filmscanfunctionasapromisingtypeofcurrentcollectorforlightweightandrosioninAlandenvironmentallyassistedflexiblelithiumionbatte
6、rieswithhighenergydensity.crackinginCuwasobserved,whichmayincreasetheinternalimpedance,passivatetheactiveelectrodematerial,andcause1.Inroductioncapacityandratecapabilitylosses.[5,6]Therehavebeenseveralapproachestoimprovingtheper-Thedevelopmentofsoftandp
7、ortableelectronicdevices,suchformanceofthecurrentcollectors.Forinstance,currentcollec-asroll-updisplays,smartcards,wirelesssensors,andwearabletorswithroughenedsurfacesornovelmetallicnanostructuresdevicesrequiresflexible,lightweight,andcompactlithiumionsu
8、chasnanorods,nanowires,andnanoporousarchitecturesbatteries(LIBs)withahighenergydensity,longcyclelife,andhavebeendevelopedtoincreasetheadhesionandcontactareaexcellentratecapability.[1–3]Thecurrentcollector,asanecessarybetweentheel
