美国dreamweaver锂电池隔膜信息

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1、Nanofiber/MicrofiberLithiumIonBatterySeparatorsforHigherPowerandFasterRechargeBatteryComponents•Separatordoestwojobs–Perfectbarriertoelectrodes–Perfectwindowtoions–Takeupnospace,weighnothingandfree•Goodbarrier,lousywindow–Inhibitshighcurrent/power–Increasesrechargeti

2、me–Decreasespowerdensity•Forcinginefficientdesignsin:–Portableelectronics–Electric/Hybridvehicles–Powertools•Dreamweavermembraneisgoodbarrier,goodwindowCurrentBatterySeparatorsTopviewSideviewDreamweaverTechnology•Nanofiberonmicrofiber–“spider-web-on-Tinkertoy”•Nanofib

3、ersformgoodbarrier•Microfibersgiveopenstructure–goodwindow•MicrofibersalsoaddstrengthDreamweaverBatterySeparatorsTopviewDreamweaverBatterySeparatorsPoreSizeDistribution•Nanofiberonmicrofiber–“spider-web-on-Tinkertoy”•Wet-laidprocessfillsgapswithnanofibers•Verynarrowpo

4、resizedistributionWetOutRate•Foodcoloringdropsafteroneminute•Wetoutdramaticallyfaster•Reduceproductioncycle•EliminatedryspotsPolyolefinDreamweaverSeparatorSeparatorThermalResistance•Thermallystable–190Cvs90CDreamweaverPolyolefinSeparatorsSeparatorDreamweaverTechnology

5、:FlexibilityTechnologyControlPointsFeaturesControlled•Microfiber•Poresize/Porosity–Size–Ionicresistivity–Amount–Energydensity–Chemistry–Recharge/dischargetimes•Nanofiber•Wettability–Size–Interactionwithelectrolyte–Amount–Chemistry•Changeswithtemperature•Web–Shutdown–W

6、eight–CalendarpressurePolyStorSafetyTestingSafetyTesting•NCMElectrodeswithmoderateloadingformoderateenergycelldesign(2.5mAh/cm2)•0,25,60degreecyclingequivalent(C/5)•Nailpenetration:passed•Externalshort:passed•Overcharge:bothcellsventedat5.1(5.2forDWI)•HotBox:rampedupt

7、o150C,heldfor10mins,passed.•Temperaturecycling:0–20–70Ccycles,10cyclesof24hrseach.Passed.•SelfDischarge:After53days,standardseparatorcellsat4.106V(lost0.092V)vs4.059V(lost0.141V)DreamweaverSeparatorRateCapabilityPolyStorRateCapabilityComparison•NCMElectrodeswithhighlo

8、adingforhighenergycelldesign(>4mAh/cm2)•Thesampleswerepouchcells•ThestandardseparatorwasCompetitor2325•TheDreamweaverseparat