[1997 Chem. Commun.] Solid-state chemistry of lithium power sources.pdf

《[1997 Chem. Commun.] Solid-state chemistry of lithium power sources.pdf》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ViewArticleOnline/JournalHomepage/TableofContentsforthisissueSolid-statechemistryoflithiumpowersources†PeterG.Bruce*SchoolofChemistry,UniversityofSt.Andrews,St.Andrews,Fife,UKKY169STThisarticledescribesthesolid-statechemistryofinter-beenlikenedbysometothesemiconductorrevolution

2、whichcalationcompoundsthatunderpinsarevolutionarynewsawthereplacementofthevalvebythetransistorinthe1940srechargeablelithiumbatterywhichhasrecentlyachievedand50s.Thenewcellcanstoremorethantwicetheenergyphenomenalcommercialsuccess.Thebatterycanstoremorecomparedwithconventionalrec

3、hargeablebatteriesofthesamethantwicetheenergycomparedwithconventionalalter-sizeandmass,anachievementwhichisremarkableinannativesofthesamesizeandmassandholdsthekeytotheindustrythattraditionallymeasuresimprovementsinafewfutureimprovementofconsumerelectronicproducts(e.g.percentage

4、points.TheSonycellrepresentsbutafirststeponmobiletelephones),electricvehiclesandimplantablemedi-theroadtogreatlyimprovedsourcesofportableelectricalcaldevices(e.g.theartificialheart).Attentionisfocusedonpower,thereismuchscopeandindeedneedforfurtherthoselithiumintercalationcompou

5、ndsthatareusefulasdevelopment.2positiveelectrodesinrechargeablelithiumbatteries.TheTheessentialelementsoftheSonycellareshownschemat-basicoperationofthecellissummarisedbrieflyandtheicallyinFig.1(a).Thecellisconstructedinthedischargedstatestructure/propertyrelationshipsaredevelop

6、edthatareandconsistsofapositiveelectrodecomposedofathinlayerofimportantforthesolid-statechemistwhenattemptingtopowderedLiCoO2mountedonaluminiumfoil,anegativedesignandsynthesisenewlithiumintercalationcompoundselectrodeformedfromathinlayerofpowderedgraphite,orcapableofoperatingas

7、positiveelectrodes.Finally,thecertainothercarbons,mountedonacopperfoil.Thetwostructure,electronicstructureandintercalationchemistryofelectrodesareseparatedbyaporousplasticfilmsoakedseveralimportantpositiveintercalationelectrodesaredis-typicallyinLiPF6dissolvedinamixtureofdimeth

8、ylcarbonatecussedincludingsomewhichshowconsiderablepro