相關(guān)課程新能源01b-intro科學(xué)院能量轉(zhuǎn)換材料重點實驗室

更高，更快，更--鋰電材料研究進展陳中 DepartmentofMaterialsScienceandApplyingMaterialsInnovationtoEnergyandEnvironmental關(guān)于題

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Rate(Tougher,1） 結(jié)4V- 2）高電壓5V- 5） 負(fù)極超 小UniversityofScienceandTechnologyofDepartmentofMaterialsScienceand正負(fù)極材料的基本材容電安全成長（Vvs.3.6-可高好中好差正190(3-130(3-3.6-3.6-優(yōu)中可中三元正3.2-可中層狀富鋰>3.0-可中石0-可低中負(fù)優(yōu)可中優(yōu)中差正極材料的能富鋰相：>1000Whkg-LiNi0.5Mn1.5O4由于其高達4.7V的工作電壓而具有比LiMn2O4LiCoO2(~3.7V)和LiFePO4(~3.4V)高出約30%層狀富鋰相由于 的比容量，具有迄今最高的能量密度蛋黃結(jié)構(gòu)LiMn2O4

蛋黃結(jié)構(gòu)實心(LMO- 蛋黃(LMO- 中空(LMO-蛋黃結(jié)構(gòu)LiMn2O4CyclingperformanceoftheLiMn2O4samplesattherateof(a)0.2C;(b)2C;(c)10Cat25°C.(d)plotsofdischargecapacityvaluesoftheLiMn2O4samplesatdifferentratesfrom0.2Cto10C.蛋黃結(jié)構(gòu)LiMn2O4(a)CyclingperformanceoftheLiMn2O4samplesattherateof1Catdifferentcyclesat55°Cat1Cthechargeanddischargecurvesdifferentcyclesat55°Cat1C正5V正極材料正程氯化物共沉淀 的5V正極材料及性氯化物共沉淀工 氯化物共沉淀工藝合成的粉體及其電化學(xué)LiNi0.5Mn1.5O4的摻雜改LiNi0.5Mn1.5O4的摻雜改ZhongandChenetal.J.PowerSources,2012,208,210;2012,inZhongandChenetal.Electrochim.Acta,2011,56,6554FangandChenetal.Electrochim.Acta,2010,55,832FangandChenetal.Electrochim.Acta,2009,54,7471XuandChenetal.Electrochim.Acta,2005,51,4352LiNiLiNi0.5-xAl2xMn1.5-xO4showsexcellentcyclabilityandgoodratecapability.無摻雜LiNi0.5Mn1.5O4的全摻雜能否改善 Don’tknow正磷酸鹽正極材料

LLiFePO4FePO4(Pnma脫鋰過程使體積減少僅6.81%，密度增加磷酸鐵鋰正P-O4191/31/3Co3O4CoO+1/6O2H=+66490:5: 20406080100120 11510VoltageSpecificVoltageSpecificcapacity技術(shù)：（1）混合離子摻雜工藝；（2）產(chǎn)品特點：優(yōu)良的綜合性能（倍率性能好、比容量高、低溫性能好等）產(chǎn)能：目前10噸/市場化兩 技增強電子防止晶粒 圖2普通碳包覆與液V2O3modifierforA-1mol%;B-3%;C-5%;D-In-situproducedV2O3cansignificantlyimprovetherateperformanceofC-coatedLiFePO4electrodes.（J.PowerSources196磷酸鐵鋰的V2O3磷酸鐵鋰的V2O3碳包覆層

cacaLiLiionsprefertodiffusealongc-direction.（S.Patouxetal./J.PowerSources121(2003)改進的正磷酸鹽正極材料:Li3V2(PO4)3(3.0- m

改進的正磷酸鹽正極材料:Li3V2(PO4)3(3.0-

cathode

Cr0:Cr+1:3d44s1or3d5Cr+2:3d44s0Cr+3:3d3s0Cr+4:Cr+5:Cr+6:Cr2O5canbeformedbythethermalpositionofCrO3atatemperaturearound400°C.Cr2O5CrCr2O5是一 比較：LiCoO2(541kWh/kg);LiMn2O4(485);LiFePO4(474);LiNi0.5Mn1.5O4Cr2O5(1)Cr2O5xLiLixCr2O5(unknownLixCr2O5yLiLixyCr2O5(xy???:Li2Cr2O5maybeahighenergycathodematerial(271mAh/g)RGO-modifiedfree-standingVO2cathodeFree-standingVO2RGO-modifiedfree-standingVO2富鋰相

VoltageVoltage

0.2 0.6

SpecificSpecificCapacity

EffciencyEffciency

Li(LiNiMn02 0.6

0

0 100150200250300350

層狀富鋰相可以在小倍率下取得高于250mAh/gocM新三元：Li2MnO3ocM 雜樣 LiTi

a:c:x=0.15d:x=0.3a:c:x=0.15d:x=0.3e: da023負(fù)RelativeCapacity/double-Cu-摻Cu-摻雜的Li4Ti5O12與摻雜量優(yōu)化。（Electrochem.LiCrTiO4

sinteredinN-sinteredinLiCrTiO4sinteredinaircontainsasmallamountofLiCrTiO4負(fù)A-A-LiCrTiO4exhibitsexcellentLiCrTiO4負(fù)1A-LiCrTiOA-LiCrTiO4exhibitsmuchimprovedrate 3V全電 LiNi0.5Mn1.5O4/Li4Ti5O12儲能電池的演示（淺充放條件下（J.Power經(jīng)過合適的正負(fù)極匹LiNi0.