Polymers For Advanced Lithium Batteries

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1、PolymersForAdvancedLithiumBatteriesNitashP.BalsaraLawrenceBerkeleyNationalLabMay12,2011ProjectID#ES088Thispresentationdoesnotcontainanyproprietary,confidential,orotherwiserestrictedinformationOverviewTimelineBarriers•FY08•Energydensity•FY11•Safety•65%•LowcyclelifeBudgetPar

2、tners•FY10funding:390K•Lead:LBNL•FY11funding:550K•Nocontractors2MilestonesMonth-YearMilestoneMar-11Electrochemicalcharacterizationofblockcopolymerelectrolytes.Partiallyaccomplished.June-11Synthesisofabinderthatconductselectronsandions.AccomplishedSept-11Synthesisofnanoporo

3、usblockcopolymerseparators.Accomplished.Allgodecisions.Noshowstoppers.ObjectiveCurrentlithiumbatteriesuseapolymericbinder(inactiveglueincathode)andapolymericseparator(expensiveinactivepolyolefinwithpores).Objective:Comprehensiveoverhaulofthewaypolymersareusedinlithiumbatte

4、riesSpecificObjectives:1.Characterizationofdrynanostructuredpolymericseparatorsforstabilizingthelithiummetalanode(95%complete).2.Synthesisandcharacterizationofapolymericbinderthatconductsbothionsandelectrons(50%complete).3.Synthesisandcharacterizationoftemplatednanoporouss

5、eparators(50%complete).Approach•Synthesizeblockcopolymers•Studymorphologyandionandelectrontransport•BuildandtestfullcellsNanostructuredsolidElectron-andion-NanoporousseparatorelectrolyteconductingbinderH2H2CCOs-BuCHxCyHH2FFSalt,FOOFLiTFSIFSSFN-OOLi+TechnicalAccomplishments

6、NanostructuredsolidelectrolytesoftphaseconductsionshardphasepreventsdendriteformationSymmetriclithium-polymer-lithiumcellexperimentsTechnicalAccomplishmentsNanostructuredsolidelectrolyteMeasurementofdiffusioncoefficientbyrestricteddiffusion.TechnicalAccomplishmentsNanostru

7、cturedsolidelectrolyteSignalresolvedoverordersofmagnitude.TechnicalAccomplishmentsNanostructuredsolidelectrolyteVaryingsamplethicknessAveragediffusioncoefficientandwidthsofdiffusioncoefficientdistributionfunctionsaredetermined.TechnicalAccomplishmentsNanostructuredsolidele

8、ctrolyte•Systemcharacterizedbyarangeofdiffusioncoefficients.•Probablytrueforallheterogene