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《高能可充放電鋰電池陰極材料的研究進(jìn)展:從鋰離子電池到鋰-硫電池.pdf》由會(huì)員上傳分享,免費(fèi)在線(xiàn)閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、Vo1.42No.6化工新型材料第42卷第6期‘b。NEWCHEMICALMATERIALS2014年6月高能可充放電鋰電池陰極材料的研究進(jìn)展從鋰離子電池到鋰一硫電池劉景海劉雪云徐秀廷陳曉紅許良段莉梅陳韋劉立偉劉宗瑞(1.內(nèi)蒙古民族大學(xué)化學(xué)化工學(xué)院,內(nèi)蒙古民族大學(xué)功能材料研究所,通遼O28O00;(2.中國(guó)科學(xué)院蘇州納米技術(shù)與納米仿生研究所,中國(guó)科學(xué)院納米器件與應(yīng)用重點(diǎn)實(shí)驗(yàn)室,蘇州215123)摘要高能、長(zhǎng)循環(huán)壽命和高充放電速率的陰極材料是限制發(fā)展靜態(tài)穩(wěn)定電能存儲(chǔ)和動(dòng)力電源用先進(jìn)鋰電池的關(guān)鍵材料問(wèn)題?;?/p>
2、于脫嵌鋰過(guò)程的層狀鋰過(guò)渡金屬氧化物、過(guò)渡金屬磷酸鋰和富鋰氧化物的陰極材料的容量發(fā)展遇到了瓶頸,因此探索基于新電化學(xué)過(guò)程的新型高容量陰極材料的研究非常重要?;诹?s)和Lis的陰極材料具有高的理論容量(1673mAhg和1166mAhg),成為發(fā)展高容量和高能鋰離子電池陰極材料研究的重點(diǎn)。綜述了解決硫陰極材料面臨的電子和鋰離子傳導(dǎo)能力差、充放電過(guò)程中可溶性硫的溶解及體積變化等關(guān)鍵科學(xué)問(wèn)題的新思路和新方法,為發(fā)展新型硫陰極材料提供參考和啟發(fā)。關(guān)鍵詞鋰電池,陰極材料,高容量,長(zhǎng)循環(huán)壽命,快速充放電速率Pro
3、gressofhighenergydensitycathodematerialsforrechargeableLibattery:FromLi—ionCellstoLi-SCellsLiuJinghaiLiuXueyunXuXiutingChenXiaohongXuLiangDuanLimeiChenWei。LiuLiweiLiuZongrui(1.InstituteofFunctionalMaterials,CollegeofChemistryandChemicalEngineering,InnerM
4、ongoliaUniversitiesfortheNationalities,Tongliao028000;2.KeyLaboratoryofNanodevicesandApplications,SuzhouInstituteofNano-TechandNano—Bionics,ChineseAcademyofSciences,Suzhou215123)AbstractDevelopingcathodematerialswithhighenergydensity,longcyclelifeandhigh
5、ratecapacityisthekeyis—sheforadvancingrechargeableLibatteriesintheapplicationsincludingstationarystorageofelectricalenergygeneratedbysolarandwind,andpoweringofelectricvehicles.TheimprovementofthecapacityofcathodematerialsbasedontheLi-ioninsertionanddispl
6、acementreactions,suchaslayeredLiMO2(M=Co,Ni,Mn),LiFeP04andLithium-richtransitionmetalsoxides,metthebottleneck.Therefore,itwasimportanttoexplorenovelhighcapacitycathodematerialswithdifferentelec—trochemicalreactions.Theresearchforutilizingsulfur(S)andLi2S
7、ascathodematerialsattractedintensiveinterests,be—causeofthehightheoreticalspecificcapacitiesofS(1673mAhg)andLi2S(1166mAhg-)withmulti-electronreactioncentres.TheresearchprogressforresolvingthechallengesofpoorelectricalandLi-ionconductivity,dissolutionofsh
8、ortchainpolysulfidesandvolumechangedduringdischargingandchargingcyclesofScathodeswassummarized,whichwillprovideinspirationandideasfordevelopingScathodes.KeywordsrechargeableLibattery,cathodematerial,highenergydensity,longc