li-ion battery technology 锂电池技术

《li-ion battery technology 锂电池技术》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、2009/2/27Li-ionBatteryTechnology鋰電池技術Li-ionBattery1991FirstCommercializedbySONY(C/LiCoO2)-HighEnergydensity(Light)高能量密度-Highvoltage(3.6V)&NoMemoryEffect.高電壓及無記憶因素-withPCM-LicensedLiCoO2PatentfromAEA,England3.6V,non-aqueousEL.非溶液型電解液1.2V,aqueousEL.溶液型電解液*EL:Electrolyte12009/

2、2/27WhyLi-ion?Li-metalbatteryLi-Ionbattery鋰金屬鋰離子Li-metalbattery(MoliEnergy)Li-ionbattery(SONY)Recalledin1989.-Carbonanode-Li/MoS2battery(SaferLiinsideCarbonanode)-Limetalanode-WithPCM(Highcapacityvs.Explosive)-WithoutPCMLiinLi-metal<

3、tingpoint熔解度=180oC(thermallyunstable非熱穩定)density密度=0.534(light輕)HighlyFlammable高可燃性(withwaterormoisture)Redfire-workHighlyReactive高反應性(intheAir)Li+O2.H2O->LiOH,Li+N2->Li3N,LiOH+CO2->Li2CO3HighStrengthLightAlloyMoodStabilizingDrug(LithiumCitrate)LightweightAir-purifierForSpa

4、ceship,submarineAl-LialloyForAircraft22009/2/27Li-ionBatteryChemistry(作動原理)1Li+vs.1e-LiCoO2&GraphitesystemChargePositiveElectrodeLiCoO2Li1-xCoO2+xLi++xe-Discharge正極ChargeNegativeElectrodeC+xLi++xe-CLixDischarge負極ChargeBatteryTotalLiCoO2+CLi1-xCoO2+CLixDischarge*RawMaterial:

5、LiCoO2,C(Graphite),Separator,ElectrolyteLi-ion&Li-ionPolymerBattery(LiB,LiPB)CylindricalcellPrismaticcellPolymercellWinding(JellyRoll)捲繞WindingorStacking捲繞或堆疊Ni-platedSteelcan,AluminumcanAluminumlaminatedFilm(Crimping)(LaserWelding)(HeatSealing熱封)StandardsizeSizeflexibility

6、32009/2/27Structure(構造)CIDElectrolyteSafetyDevices;NoPTC,NoSafetyvent,-SafetyventNoCID,NoFreeelectrolyte-PTC-CID-CenterpinAnode/Negativeelectrode(陰極)AnodeActiveMaterialsSoftcarbonhardcarbongraphite石墨500mAh/g(eff.80%)C6Li(372mAh/g)Flatdischargecurve1.6g/cc,slopingdischargecu

7、rve300~360mAh/g,efficiency>90%2.2g/cc,AnodeElectrodevGraphiteConductingcarbonBinder(SBR+CMC)vvCufoil銅箔*SBR;StyreneButadieneRubber(binder)*CMC:CarboxyMethylCelluloseinwater.(Viscositystabilizer)42009/2/27Cathode/Positiveelectrode(陽極)CathodeActiveMaterialsLayered層疊,LiCoO2,NMC

8、Spinel旋繞,LiMn2O4Iron-Phosphate,LiFePO4CathodeElectrodevCathodeMaterialConductingca