资源描述：
《09 Electrode–solution interactions in Li-ion batteries(a short summary and new insights).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、JournalofPowerSources119121(2003)497503ElectrodesolutioninteractionsinLi-ionbatteries:ashortsummaryandnewinsights*D.AurbachDepartmentofChemistry,Bar-IlanUniversity,Ramat-Gan52900,IsraelAbstractThispaperisaimedatreviewinganddiscussingseveralselectedsurfacephenomenarelat
2、edtoLi-ionbatteries.AccumulateddatafrominsituXRD,insituAFM,SEM,andelectrochemicalmeasurementsofgraphiteelectrodescomprisingdifferenttypesofgraphiteparticles(intermsofmorphologyand3Dstructure)convergetoadescriptionoffailuremechanismsofgraphiteelectrodes,whichinvolvedeac
3、tivationbyinsulatingsurfacefilmsthatsurroundcrackedparticles.Itappearsthattheperformanceofthecathodesisalso,toalargeextent,surfacefilmcontrolled.Hence,agingofLi-ionbatteriesrelatesmostlytosurfacephenomenathatincreasetheelectrodesimpedance,especiallyatelevatedtemperatures
4、.AttemptstoimprovetheperformanceofLi-ionbatterysystemsbyintroductionofnewsaltsandreactiveadditivesarereviewed.Theimpactofelevatedtemperatures(upto808C)isalsodiscussed.#2003ElsevierScienceB.V.Allrightsreserved.Keywords:Li-ionbatteries;Graphite;Cathodes;Surfacefilms;Imped
5、ance;Additives;Capacity-fading;XRD;AFM;FTIR;XPS1.IntroductionforLi-ionbatteries,agreatdealofeffortisinvestedinthestabilizationofgraphiteelectrodes,eitherbysurfacetreat-Theapparentstabilityandgoodperformanceofthements[5]orbytheuseofreactive,filmingadditivesinlithiatedcar
6、bonanodesandthetransitionmetalcathodessolutions[6,7].ThecathodesideinLi-ionbatteriesisalsoofLi-ionbatteriesinthecommonlyusedelectrolytesolu-veryinterestinginrelationtoelectrodesolutioninterac-tions(mixtureofalkylcarbonatesolventsandaLisalt)istions.TheoxidationofLi-ionb
7、atterysolutionswasinves-duetocomplicatedelectrodesolutioninteractionsandpas-tigatedinrecentyears[8].However,thequestionastosivationphenomena.ThefirstreplacementtoLimetalwhetheralkylcarbonatesolventsareoxidizedbythehighanodesforrechargeablebatterysystemswasgraphite.Overv
8、oltagecathodematerials(delithiatedLixMOy,E>4Vþtheyears,thecorrelationamongthesurfacechemistry,versusLi/Li)remainsopen
