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1、ACSAppl.Mater.Interfaces2016,8,31722−31728Carbon-FreePorousZn2GeO4NanofibersasAdvancedAnodeMaterialsforHigh-PerformanceLithiumIonBatteries†FacultyofChemistry,National&LocalUnitedEngineeringLaboratoryforPowerBatteries,NortheastNormalUniversity,Changchun,Jilin130024,China‡SchoolofMaterialsScienceandEn
2、gineering,NanyangTechnologicalUniversity,Singapore639798,SingaporeReporter：HaHaHa2016-12-10Huan-HuanLi,†,§Xing-LongWu,†,‡,§Lin-LinZhang,†Chao-YingFan,†Hai-FengWang,†Xiao-YingLi,†Hai-ZhuSun,*,†Jing-PingZhang,*,†andQingyuYan*,‡AbstractIntroductionExperimentalSectionResultsandDiscussionConclusions2Main
3、contentsAbstractInthiswork,carbon-free,porous,andmicro/nano-structuralZn2GeO4nanofibers(p-ZGONFs)havebeenpreparedviaadissolution-recrystallization-assistedelectrospinningtechnology.Electrochemicaltestsdemonstratethattheas-preparedp-ZGONFsexhibitsuperiorLi-storagepropertiesintermsofhighinitialreversi
4、blecapacity,outstandingcyclingstability,andexcellenthigh-ratecapabilities.ThemuchenhancedLi-storagepropertiesshouldbeattributedtoitsdistinctivestructuralcharacteristicsincludingthecarbon-freecomposition,plentifulpores,andmicro/nanostructures.Carbon-freecompositionpromisesitshightheoreticalLi-storage
5、capacity.Plentifulporescannotonlyaccommodatethevolumetricvariationsduringthesuccessivelithiation/delithiationbutcanalsoserveastheelectrolytereservoirstofacilitateLiinteractionwithelectrodematerials.1.IntroductionWithtoday’smoderntechnology,lithiumionbatteries(LIBs)havebeenwidelyusedasamainenergystor
6、agesystemtopowerportableelectronicsandelectricvehicles.requirementsoftherapidlydevelopedapplicationshigherpowerandenergydensitiesZn2GeO4promisinganodematerialsforLIBsAdvantageThishighvalueoriginatesfromthedualLi-alloyingreactionsofZnandGeatomsinadditiontotheconversionreactionincomparisontootherGe-co
7、ntainingmetaloxides,suchasCa2Ge7O16,Co2GeO4,andBaGe4O9,inwhichonlyGeatomscanalloywithLi.DrawbacksZn2GeO4anodewillalsoencounterlargevolumetricvariationsandsluggishkineticsofionictransportsandconversion
