linimno復合氧化物正極材料的制備與電化學性能的研究

1、武漢理工大學碩士學位論文LiNiMnO復合氧化物正極材料的制備與電化學性能的研究姓名：張雯申請學位級別：碩士專業(yè)：材料學指導教師：劉韓星20070401武漢理工大學碩士學位論文AbstractLiC002hasbecomethemaincathodeincommerciallithiumionbatteriesbasedonitsmeritofhighcapacityexcellentreversibilityanddischarger

2、ateBeeansoofthehi曲coStandtoxicityofLiC002，researchershavebeensearchingforalternativematerialsTheresearchersmadeextensivestudyonLiNi02andLiMn02∞LiC002alternativesAlthoughtherehasbeenalotofprogressinmakingthosematerialsinm

3、anyaspects，theyStillpossessvarionsproblemsforpracticalapplicationRocenfly，thesolidsolutionmaterialsmainlycontainingNiandMhwhichwasprovedtobesuperiortotheLiNi02andLiMn02，hadbocomeanimportantresearchaspectincathodematerial

4、fieldInthisworklayeredLiNil／2Mnl／202powdersaresuccessfullysynthesizedbyacoprecipitationtheirpreparationandpropertiesaredeeplyandsystematicallyexploredbymeansofXRD、SEM、TG／DSC、CV，XPSandsoonEffectsonthestructureandpropertie

5、sofsamplesarestudied丘鋤Liresoulves，differentperforms，LiOH／M(OHhmolarratiocoolingpatterncalciningheatconditionthebeStsynthesistechnicsa∞optimizedTheresultsgotfromtheexperimentsshowthatthesamplesofLiNiv2Mnv202whichweresinte

6、redat800“(2fromLiOH：M(OH)f105：1，pressingpellets，quenchingpatternarebeStLiNivzMnla02exhibitedadischargecapacityof1456mAh／ginthevoltagerangeof2846Vand缸aspecificcurrentof20mA／gConsideringthedisadvantagesofco—preeipitionproc

7、esstosynthesisofLiColoNivjMnltj02，weappliedsolgelmethodtoprepareLi【Ni(1xy2C齜l刪2】02(Oxl／2)seriesThestructureandelectrochemicalpropertieshavebeeninvestigated，allthecompoundshaveaNaFe02typestructttreandhaveasphericalorellip

8、seshape，itsparticlesareuniformandinthesizerangeof100500nmElectrochemicalmeasurementsshowthatallthesamplesperformgoodelectrochemicalpropertieswhencycledinthevoltagerangeof2946Vandataspecificcurrentof20mAJg，exhibitinghighe