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DevelopmentofLiMnPO4asanextgenerationcathodematerialsforlithium-ionBatteriesYonggaoXiaAdvancedLi-ionBatteryEngineeringLabNingboInstituteofMaterialsTechnology&Engineering,ChineseAcademyofSciences-------FromLiFePO4cathodetoLiMnPO4cathodei.ResearchprogressofLiFePO4ii.FromLiFePO4cathodetoLiMnPO4cathodeiii.BasicresearchofLiMnPO4iv.IndustrialTechnologyofLiMnPO4LiFePO4cathodeLowconductivityCarboncoatingLowLi-iondiffusionNano-sizeOurstrategySolutionNano-particlesizeImprovedLi-iondiffusionImprovedconductivityLiFePO4/graphenecomposite3DGraphenenetworkResearchprogressofLiFePO4J.Mater.Chem.2010,20,8086.J.Mater.Chem.2011,21,3353.Building3DconductivenetworkstructureCPgraphenepyrolyticcarbongraphenepyrolyticcarbonRamanXPSLiFePO4/graphenecompositeResearchprogressofLiFePO4RatecapabilityHigh-powercyclingperformance10Ccharge20CdischargepyrolyticcarbonLiFePO4/graphenecompositeResearchprogressofLiFePO4ProductiontechnologyNingboEnergyMaterialsTechnologyCo.,Ltd1,000T/YproductionlineResearchprogressofLiFePO4Building3DconductivenetworkstructureBatterymeasurementHigh-power18650batteryHigh-energy10Ahbattery全电池克容量:139mAh/g能量密度:160Wh/kgResearchprogressofLiFePO40204060801001201401602.53.03.54.04.5LiMnPO4LiFePO4PotentialVVs.Li/Li+DischargeCapacitymAh/gFromLiFePO4toLiMnPO4Increasingenergydensityby20%?FromLiFePO4cathodetoLiMnPO4cathodeDisadvantage:LowerelectricalconductivityLowerLi-iondiffusionof10-16Highvoltage4.1VHighenergydensityAdvantageImportanceofNanosize,doping,surfaceandmorphologyWidelyapplicationpossiblesolutionIntroductionofLiMnPO4BasicresearchofLiMnPO4(1)MorphologyControlJ.Mater.Chem.2012,22,21114.BasicresearchofLiMnPO4NanorodsThinnanoplatesThicknanoplatesBasicresearchofLiMnPO4TheLiMnPO4withthinnanoplatesdisplaythebestratecapacityThelowestchargetransferandsurfacefilmresistance(1)MorphologyControlBasicresearchofLiMnPO4(2)Carbonmodificationhighergraphitizationdegreeofgraphene-containingcarbonlayersthanpyrolyticamorphouscarbonModificationofthinnanoplateswithgraphenegivesrisetoanimprovedratecapability.(2)CarbonmodificationBasicresearchofLiMnPO4(3)IrondopingLiMn0.9Fe0.1PO4nanoplateswithathicknessof20–30nmcoulddeliverthelargestdischargecapacityJ.powersources,248(2013)246-252(3)IrondopingBasicresearchofLiMnPO4(4)LiMnPO4/Li3V2(PO4)3compositeJ.powersources,239(2013)144-150BasicresearchofLiMnPO4Thecompositewithx=0.4exhibitsthebestelectrochemicalperformance.Theoutstandingperformancecanbeascribedtotheexistenceoftheopen3DframeworkoftheelectronicallyconductiveLVPphaseandthedopingVintothecrystalstructureofLMP.(5)CompositeofLiMnPO4withTitaniumPhosphatePhasesTihasobviouslychangedthemorphologiesoftheirparticlesandreducedthesizeofgrains.Ti=10%additivesamplehaslowerchargetransferresistanceandhigherdiffusioncoefficient.BasicresearchofLiMnPO4Pilotproduction0204060801001201401602.02.53.03.54.04.5Potential(Vs.Li/Li+)Specificdischargecapacity(mAh/g)5C2C1C0.1CTap-density1.0g/cm3D508.9mmPrimateparticlesize~50nm0.1Cdischargecapacity160mAh/g1Cdischargecapacity144mAh/gPilotsamples(developmentoflow-costsynthesisroute)IndustrialTechnologyofLiMnPO460oCRatecapabilityandcyclingperformance振动样品强磁机IndustrialTechnologyofLiMnPO4XHP18650cylinderbattery:•Acapacityof1100mAh•Workvoltageof3.9V18650cylinderbatteryRT:85%capacityretentionafter2000cycles60oC:80%capacityretentionafter650cyclesIndustrialTechnologyofLiMnPO43C/10VOverchargetestPricktestRatecapabilityLowtemperatureperformanceIndustrialTechnologyofLiMnPO418650cylinderbatteryLMP+NMCIndustrialTechnologyofLiMnPO4AdvantagesofBlendingNMCintoLMPCathodes1.4Ah1.7Ah0.3AhBatteryLiMn2O4LiCoO2LiFePO4LiMnPO4LNONMCWorkvoltage(V)3.83.73.23.93.63.6Cyclelife≥500500-1000≥2000≥2000≤1000≤1000Gravimetricpowerdensity(Wh/Kg)380518480600640576Safety○△◎◎△△Environmentalconcern○△◎○△△PricelowestHighestLowLowHighHighApplicationEV/HEV3CEV/HEV3C/EV/HEV3C3C◎Excellent◯Accept△PoorThepositionofourLiMnPO4Pilotproductionline(30t/y)ManythanksfromAdvancedLi-ionBatteryEngineeringLab@NIMTE
本文标题:磷酸锰锂技术简介
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