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Fire-retarding Intrinsic Solid Polymer Electrolytes Based on Multi-armed Oligo( ethylene oxide)

資料類型：

PDF文件

關(guān)鍵詞：

solid polymer electrolyte lonic conductivity multi-armed oligo(ethylene
oxide)

資料大小：

113K

所屬學(xué)科：

分子表征

來(lái)源：

第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集（2013.6.2-6 武漢）

簡(jiǎn)介：

Solidpolymerelectrolytes(SPEs)basedonpoly(ethyleneoxide)(PEO)areconsideredpromisingcandidatesforsecondarylithiumbatteries.However,thelowionicconductivitycausedbythecrystallinityofethyleneoxide(EO)chainisamainlimitationforthemtobecommercializedcl].What‘smore,ionicconductivityandmechanicalpropertyofSPEsareintrade-offrelationshipc2].AnefficientmethodtosolvetheseproblemistomakehybridpolymersbygraftingEOsidechainsontoinorganicpolymerbackbonesc3,4],thenyieldintrinsicSPEsbycross-linkingnetworkwhichcombinesspecificmacromolecularproperties,thermalresistanceforsafetyandhighelectrochemicalstability.TheinflamabilityofSPEscanalsobecontrolledbymodifyingtheinorganicunitsofhybridpolymers.Inthisstudy,multi-armedplasticizersandcrosslinkerswerepreparedbyintroducingoligomericEOchainarmsontowell-knownfire-retardantc5]inorganiccores.Fromtheblendingprecursorsolutionofthem,semi-interpenetratingnetworks(semi-IPN)SPEswerepreparedbyradicalinitiatedcross-linkingreaction.Free-standingsolidfilmswereobtainedwithgoodmechanicalstability.TheeffectsofthenumberofEOunitsinplasticizers,lithiumsaltconcentration,andthecontentoftheplasticizersonionicconductivityofSPEswereinvestigatedtooptimizeionicconductivity.DSCthermogram,cyclicvoltammetryandchronopotentiometryofSPEswereconductedtofigureoutthecontributionofplasticizerstotheimprovementsofelectrochemicalpropertiesofthesesemi-IPNSPEssystems.

作者：

D. He ,J. Y. Liu , Z. G. Xue

上傳時(shí)間：

2013-07-03 14:52:24

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