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231Vol.23No.1 20092CHINESEJOURNALOFMATERIALSRESEARCHFebruary2009 Æ (()110016) //,., ,., ,. ,,, TB3211005-3093(2009)01-0022-05 SynthesisandelectrochemicalpropertyofLiFePO4with core-shellstructures LIUShuheWENLeiBAISuo∗LIFengWANGZuoming (ShenyangNationalLaboratoryforMaterialsScience,InstituteofMetalResearch, ChineseAcademyofSciences,Shenyang110016) ManuscriptreceivedMarch5,2008;inrevisedformMay12,2008. *Towhomcorrespondenceshouldbeaddressed,Tel:(024)83978648,E–mail:sbai@imr.ac.cn ABSTRACTTwotypesofcore-shellstructuredcathodematerials-pyrolyticcarbon(PyC)/LiFePO4 andcarbonnanofiber(CNF)/LiFePO4weresynthesizedbyfluidizedbedchemicalvapordepositionmethod andtheirelectrochemicalpropertieswereexplored.ThePyCorCNFcoatingcaneffectivelyreducethe resistivityofLiFePO4,andgreatlyimproveditscharge-dischargecapacityandcyclability.Comparedwith PyC,theonedimensionalstructureandexcellentmechanicalperformanceofCNFmakeitmoresuitable astheconductiveadditiveofLiFePO4. KEYWORDSinorganicnon-metallicmaterials,LiFePO4,fluidized-bed,electrochemicalproperty ,LiCoO2, Æ LiNiO2LiMn2O4,(LiFePO4)., .,, LiFePO4,,.,. 1997,LiFePO4, (,LiFePO4 [1,2][3−11] ).. ,LiFePO4, [12,13] ,/LiFePO4 [3−5] Æ ;,LiFePO4,LiFePO4 [10,11] LiFePO4/FePO4,. ,,