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1、InvestigationofcriticalparametersinLi-ionbatteryelectrodesJordiCabanaLawrenceBerkeleyNationalLaboratoryMay11th,2011ES70_CabanaThispresentationdoesnotcontainanyproprietary,confidential,orotherwiserestrictedinformationOverviewTimelineBarriers•PIjoinedBATTandLBNL•BarriersaddressedinF
2、Y09–Gravimetricandvolumetric•ProjectstartSep‘09EnergyDensity•ProjectendAug‘11–Cyclelife–Safety•80%completePartnersBudget•Persson,Doeff,Richardson,Chen,•FundingFY09:$420kKostecki,Battaglia(LBNL),Grey(SUNY-SB),Whittingham(SUNY-B)•FundingFY10:$440k•A.Mehta,(SSRL,Stanford),•FundingFY1
3、1:$630kM.Casas-Cabanas(Caen,France),M.R.Palacin(ICMAB,Spain),A.Dong(MF,LBNL),M.A.Marcus(ALS,LBNL)2Relevance-Objectives•Toachievecyclelifeandenergydensitytargetsusinghighvoltage(>4.5V)electrodematerials.–Synthesizematerialswithcontrolledcrystal-chemistryandmicrostructure–Establishc
4、hemistry-structure-propertiescorrelationsthataidinthedesignofbettermaterials.–Assessoriginsofin-cycleandcyclinginefficiencies.–barriers:energydensity,cyclelife,safety•Tounderstandimpactofmaterialsandelectrodedesignonperformance.–Developmethodstocoupleelectrodeperformanceandtransfo
5、rmationsatmultiplelengthscales.–barriers:energydensity,cyclelife3MilestonesMar.10ReportthecyclingperformanceofLiNi1/2Mn3/2O4madesolvothermally.CompletedJul.10ChoosepromisingCu-M-O(M=transitionmetal,Al,P,Si)phasesandtestthem.CompletedSep.10ReportthecharacterizationofcycledNiOelectr
6、odesbyNMR,XASandTEM.CompletedSep.10SynthesizeSn-basednanoalloyswithcontrolledmicrostructureandreporttheirperformanceaselectrodes.PostponedtoFY11Mar.11ReportthethermalanalysisofcycledLiNi1/2Mn3/2O4electrodesandtheresultsofannealingusingdifferenttreatments.OngoingSep.11Reporttheanal
7、ysisofSnnanoparticlesatdifferentstagesofcycling.OnscheduleSep.11ReporttheelectrochemicalresponseofNiOwhencycledathightemperatures.Onschedule4Approach/Strategy•Understandthecorrelationbetweencrystalstructure,microstructure,compositionandelectrochemicalperformanceinLiNiMnO.1/23/24–S
8、ynthesizesampleswithcontrolledmic
