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1、225J.Electroanal.Chem.,297(1991)225-244ElsevierSequoiaS.A.,LausanneTheelectrochemistryofnoblemetalelectrodesinaproticorganicsolventscontaininglithiumsaltsD.Aurbach*,M.Daroux,P.FaguyandE.Yeager**CaseCenterforElectrochemicalSciences,andTheDepartmentofChemistry,CaseWesternReserveUniversity,Cleve
2、lanrl,OH44IO6(USA)(Received9August1989;inrevisedform23March1990)AbstractTheelectrochemicalbehaviorofvariousnon-aqueousorganicelectrolytesystemshasbeeninvesti-gatedusinginertmetalelectrodes.Thesystemsstudiedincludedpropylenecarbonate,dimethoxyethaneandtetrahydrofuransolutionsofLiClO,,L&F,,LiSO
3、,CF,andBu,NClO,.Theelectrodemetalsincludedpolycrystallinegoldandsilver.Varioustechniquesincludingcyclicvoltammetry,FTIRandXPSwereusedtocharacterizethemainelectrochemicalreactionsthatoccurinthesesystems.Severalseparatefilmformingprocesseshavebeenidentified,includingreductionofsolvent,thesalt,a
4、ndtracesofoxygenandwater.Thesurfacefilmsformedintheseprocessesleadtotheapparentstabilityofthesesystemsatlowpotentials.LiUPDwasalsoexaminedandwasfoundtobecontrolledbythenatureofthesurfacefilmsthroughwhichlithiumisdeposited.INTRODUCTIONThereisincreasinginterestincarryingoutelectrochemicalreacti
5、onsinnon-aque-oussystems[l],bothbecauseofthewiderangeofpotentialsthatcanbereachedbeforesolventdecompositionoccursinthesesystemswhencomparedwithaqueoussystems,andbecauseofthesolubilityand/orstabilityrequirementsofmanyreagents.Theelectrochemicalbehaviorofnoblemetalelectrodesinnon-aqueoussystems
6、isimportantindefiningthepotentialwindowsavailableandthereactivityofthesolvents,saltsandcontaminantssuchaswaterandoxygenthatmaybepresent.Theobjectivehereistosurveythebehaviorofnoblemetalelectrodesinlithiumionsolutionsinanumberofsolventsystemsofcommercialimportancetothebatteryindustry.Theemphas
7、isisonidentificationofthegeneralfeaturesand*Presentaddress:DepartmentofChemistry,Bar-BanUniversity,RamatGan52100,Israel.**Towhomcorrespondenceshouldbeaddressed.0022-0728/91/$03.5001991-ElsevierSequoiaS.A.226processescommontoallthesesystems,ra
