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研究论文

锂离子电池正极材料Li_xNi_(1/3)Mn_(1/3)Co_(1/3)O_2的合成及电化学性能研究

  • 郭晓健 ,
  • 李劼 ,
  • 李益孝
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  • 厦门大学固体表面物理化学国家重点实验室,厦门大学固体表面物理化学国家重点实验室,厦门大学固体表面物理化学国家重点实验室,厦门大学固体表面物理化学国家重点实验室 福建厦门361005,福建厦门361005,福建厦门361005,福建厦门361005

收稿日期: 2006-08-28

  修回日期: 2006-08-28

  网络出版日期: 2006-08-28

Studies on Synthesis and Electrochemical Performance of Li_(x)Ni_(1/3)Mn_(1/3)Co_(1/3)O_(2) as Cathode Material for Lithium Ion Batteries

  • GUO Xiao-jian ,
  • LI Jie ,
  • LI Yi-xiao
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  • (State Key Lab for Physical Chemistry of Solid Surface,Xiamen University,Xiamen 361005,Fujian,China

Received date: 2006-08-28

  Revised date: 2006-08-28

  Online published: 2006-08-28

摘要

应用以氢氧化物共沉淀为前驱体的高温固相烧结法合成L iN i1/3Mn1/3Co1/3O2正极材料,研究了沉淀温度及烧结过程锂盐投入量对该材料的结构和电化学性能的影响.结果表明,以室温(~20℃)下合成的氢氧化物为前驱体制备的L iN i1/3Mn1/3Co1/3O2具有较好的电化学性能.高温固相烧结会导致部分L iOH损失,因而在合成过程中需加入过量的氢氧化锂,实验表明L i1.08N i1/3Mn1/3Co1/3O2材料的电化学性能最优.

本文引用格式

郭晓健 , 李劼 , 李益孝 . 锂离子电池正极材料Li_xNi_(1/3)Mn_(1/3)Co_(1/3)O_2的合成及电化学性能研究[J]. 电化学, 2006 , 12(3) : 310 -314 . DOI: 10.61558/2993-074X.1743

Abstract

A series of LiNi_(1/3)Mn_(1/3)Co_(1/3)O_(2) were synthesized by a combined hydroxides coprecipitation and calcination method.Effects of synthesizing temperature of coprecipitations and the Li∶M ratios on structure and electrochemical performance of the materials were studied.The results showed that materials synthesized with coprecipitation at room temperature(~20 ~(o)C) delivered the best electrochemical performance.Another series of cathode materials Li_(x)Ni_(1/3)Mn_(1/3)Co_(1/3)O_(2) with different Li∶M ratios were synthesized with this method.The results showed that sintering at high temperature could cause loss of LiOH,thus more LiOH should be added.It is demonstrated that Li_(1.08)Ni_(1/3)Mn_(1/3)Co_(1/3)O_(2) had the best electrochemical performance.

参考文献

[1]Ohzuku T,M ak imura Y.Layered lith ium insertion m a-terial of L iN i1/3Mn1/3Co1/3O2for lith ium-ion batteries[J].Chem.Lett.,2001,7:642~643. [2]Yabuuch i N,Ohzuku T.Novel lith ium insertion m ateri-al of L iCo1/3N i1/3Mn1/3O2for advanced lith ium-ion bat-teries[J].J.Power Sources,2003,119~121:171~174. [3]Park S H,Yoon C S,Kang S G,et al.Synthesis andstructural characterization of layered L iN i1/3Co1/3Mn1/3O2cathode m aterials by u ltrason ic spray pyrolysis m eth-od[J].E lectroch im.Acta,2004,49:557~563. [4]Cho T H,Park S M,Yosh io M.Preparation of layeredL iN i1/3Mn1/3Co1/3O2as a cathode for lith ium secondarybattery by carbonate coprec ip itation m ethod[J].Chem.Lett.,2004:704~705. [5]Lu C H,Lee C.Reaction m echan ism and k inetics anal-ysis of lith ium n ickel oxide during solid-state reaction[J].J.M ater.Chem.,2000,10:1403~1407. [6]Levasseur S,M enetrierM,Delm as C.Comb ined effectsofN i and L i dop ing on the phase transitions in L ixCoO2electrochem ical and L i-7 nuc lear m agnetic resonancestud ies[J].J.E lectrochem.Soc.,2002,148(12):A1533~A1540.
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