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1、Lithium-IonElectrolytesContainingEsterCosolventsforImprovedLowTemperaturePerformanceM.C.Smart,B.V.Ratnakumar,K.B.ChinandL.D.WhitcanackJ.Electrochem.Soc.2010,Volume157,Issue12,PagesA1361-A1374.doi:10.1149/1.3501236EmailalertingReceivefreeemailalertswhennewa
2、rticlescitethisarticle-signupintheboxattheservicetoprightcornerofthearticleorclickhereTosubscribetoJournalofTheElectrochemicalSocietygoto:http://jes.ecsdl.org/subscriptions©2010ECS-TheElectrochemicalSocietyDownloadedon2012-08-23toIP121.13.249.250address.Re
3、distributionsubjecttoECSlicenseorcopyright;seewww.esltbd.orgJournalofTheElectrochemicalSociety,15712A1361-A13742010A13610013-4651/2010/15712/A1361/14/$28.00©TheElectrochemicalSocietyLithium-IonElectrolytesContainingEsterCosolventsforImprovedLowTemper
4、aturePerformance,zM.C.Smart,*B.V.Ratnakumar,*K.B.Chin,*andL.D.WhitcanackJetPropulsionLaboratory,CaliforniaInstituteofTechnology,Pasadena,California91109,USAAspartofourcontinuingeffortstodevelopadvancedelectrolytestoimprovetheperformanceoflithium-ioncells,e
5、speciallyatlowtemperatures,wehaveidentiÞedanumberofelectrolytecosolventsthatcanbeincorporatedintomulticomponentelectrolyteformulationsforenhancedperformance,especiallyatverylowtemperaturesdownto−70¡C.Inthecurrentwork,weinvesti-gatedanumberofestercosolven
6、ts,namelymethylpropionate,ethylpropionate,methylbutyrate,ethylbutyrate,propylbutyrate,andbutylbutyrate,inmulticomponentelectrolytesofthefollowingcomposition:1.0MLiPF6inethylenecarbonateEC+ethylmethylcarbonate+X20:60:20vol.%whereX=estercosolvent.Empha
7、siswasplacedupondeterminingtheeffectofelectrolytetypeuponthelowtemperatureperformanceinexperimentalmeso-carbonmicrobeadsÐLiNixCo1−xO2cellsequippedwithreferenceelectrodesandcharacterizingtheirinßuenceuponthelithiumintercalation/deintercalationkinetics.The
8、secellsweresubjectedtoelectricalcharacterizationchargeanddischargeatdifferenttemperaturesandratesaswellaselectrochemicalcharacterizationelectrochemicalimpedancespectroscopy,linearpolarization,andTafelpolar
