%0 Journal Article
%T SuppressingtheImpedanceRiseofLiNi0.8Co0.2O2/GraphiteCellsbyAl,TiandMgDoping
%A 陈春华
%A 谢松
%A 柳俊
%A AmineK
%J 过程工程学报
%D 2004
%X Theresearchonutilizinglithium-ionbatterieswithLiNi0.8Co0.2O2-basedcathodeforhybridelectricvehiclesisintensivelyunderwayinseveralnationallaboratoriesofUSDepartmentofEnergy.TheimpedanceofLiNi0.8Co0.2O2/graphitelithium-ioncellsisobservedtoexperienceasubstantialriseduringacceleratedcalendarlifestorage,duemainlytothesignificantincreaseoftheinterfacialresistanceonthecathodeside.BymeansofelectrochemicalmeasurementsandACimpedancespectroscopy,itisfoundthatdopingtheLiNi0.8Co0.2O2cathodewithsmallamountofAl,TiandMgcaneffectivelysuppressthisimpedancerise.PossiblemitigationofoxidizingabilityofNi4+duetoAl,TiandMgdopingisproposedtoachievethisimpedancestabilization.
%K rechargeablebatteries
%K doping
%K cathode
%K impedance
%U http://www.jproeng.com/qikan/Cpaper/zhaiyao.asp?bsid=223