•  
  •  
 

Abstract

The modified LiMn_2O_4 cathode materials for lithium ion batteries have been synthesized by solid-state reaction. The crystal structure and electrochemical performance of products have been investigated by SEM、XRD and electrochemical measurements. The XRD analysis indicated that all the synthesized products possess Fd3m spinel LiMn_2O_4 structure. Those modified LiMn_2O_4 materials showed improved cycling capacity over pure spinels at high temperature and room temperature.

Keywords

Lithium ion batteries, Spinel LiMn_2O_4, Modification, Electrochemical performance

Publication Date

2004-11-28

Online Available Date

2004-11-28

Revised Date

2004-11-28

Received Date

2004-11-28

References

[1] TarasconJM,GuromardD.TheLi1+xMn2O4/Crocking chairsystem:Areview[J].ElectrochemActa,1993,38(9):1221~1231.
[2] LiuZh,AsishuiYu,LeeTY.CyclelifeimprovementofLiMn2O4cathodeinrechargeablelithiumbatteries[J].J.PowerSources,1998.74:228~223.
[3] MariaRitaMancimi,LorenzoPetrucci,FabioRonci,etal.LongcyclelifeLi Mn Odefectivespinelelectrodes[J].J.PowerSources,1998,76:91~97.
[4] HosoyaM,IkutaH,WakiharaM.SingelphaseregionofcationsubstitutedspinelLiMyMn2-yO4(M=Cr,CoandNi)andcathodepropertyforlithiumsecondarybattery[J].SolidStateIonics,1998,111:153~159.
[5] GaoY,YakovlevaMV,EbnerWB.NovelLi1-xTix/2Mgx/2O2compoundsascathodematerialsforsaferlithium ionbatteries[J].ElectrochemicalandSolid stateLetters,1998,1(3):117~119.
[6] HayashiN,IkutaH,WakharaM.CathodeofLiMgyMn2-yO4andLiMgyMn2-yO4-δspinelphaseforlithiumsecondarybatteries[J].J.Electrochem.Soc.,1999,146(4):1351~1354.
[7] LuShigang,SunYucheng,LinRenmin,etal.TheelectrochemicalperformsofspinelLiMn2O4[J].Electrochemistry,2000,6:442~450.
[8] AmatucciGG,SchmutzCN,BlyrA,etal.MaterialseffectsontheelevatedandroomtemperatureperformanceofC/LiMn2O4Li ionbatteries[J].J.PowerSources,1997,69:11~25.\
9] OhzukuT,KitagawaM,HiraiT.Electrochemistryofmanganesesdioxideinlithiumnonaqueouscell[J].J.Electrochem.Soc.,1990,137:769~775.
[10] XiaY,ZhouY,YoshioM.Capacityfadingoncyclingof4VLi/LiMn2O4cell[J].J.Electrochem.Soc.,1997,144:2593~2600.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.