动力锂离子电池技术及产业发展国际论坛

.,CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnologyDr.ShaoruiSunProf.DingguoXia2009/10/17,Insertion/De-insertionProcessesandRatePropertiesforLiFePO4,.,.,SearchingforsuchLi1-FePO4andLiFePO4single-phaseregions,Srinivasan,VtakingintoaccountboththediffusionofLithroughtheshellandthemovementofthephaseboundary,andraisingthequestionofpartialsolidsolutiondomainsthatareboundtoexist.Delacourtreportedtheexistenceofsolidsolutionsatelevatedtemperatures.Yamadasuggestedthatsolidsolutionscouldexistatroomtemperature.,.,.,Room-temperaturemiscibilitygapinLixFePO4,naturematerialsVOL5/MAY,theshellshouldbeomposedofLiFePO4onchargingandLi1FePO4ondischarging.,.,naturematerialsVOL7AUGUST,C.DELMAS1*,M.MACCARIO1,L.CROGUENNEC1,F.LECRAS2ANDF.WEILL1,.,.,.,.,BatterymaterialsforultrafastcharginganddischargingByoungwooKang1,.,Fig.1:(b)thestructureofLi0.75FePO4,inwhichthesquareisthevacancy;,.,Fig.1:(c)thestructureofLi0.50FePO4,.,Fig.1:(d)thestructureofLi0.25FePO4,.,Fig.3:TheDOS(DensityofState)of(a)LiFePO4;,.,Fig.3:TheDOS(DensityofState)of(a)LiFePO4;(b)Li0.75FePO4;(c)Li0.50FePO4;(d)Li0.25FePO4;(e)FePO4.,.,Fig.2:ThelithiumconcentrationdependenceofE,.,Fig.3ThelithiumconcentrationdependenceoftheFermilevel.,.,.,Fig.6(a)theformingoftheelectronpotentialwellinthemediumregionandthelithiuminsertion