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研究论文

液相法合成锂离子电池正极材料Li_(1+x)Mn_2O_4

  • 刘培松 ,
  • 刘兴泉 ,
  • 李庆 ,
  • 陈召勇 ,
  • 张伯兰
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  • 中国科学院成都有机化学研究所功能材料研究开发中心!四川成都610041,中国科学院成都有机化学研究所功能材料研究开发中心!四川成都610041,中国科学院成都有机化学研究所功能材料研究开发中心!四川成都610041,中国科学院成都有机化学研究所功能材料研究开发中心!四川成都610041

收稿日期: 2000-08-28

  修回日期: 2000-08-28

  网络出版日期: 2000-08-28

Synthesis of Li_(1+x)Mn_2O_4 cathode material for lithium-ion batteries with solution method

  • LIU Pei song ,
  • LIU Sing quarn ,
  • Li qing ,
  • CHEN Zhao yong ZHANG Bai lan ,
  • YU Zuo long
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  • (Research and Developing Center for Functional Materials, Chengdu Inst of Organic Chem,Chinese Academy of Scie,Chengdu 610041,China

Received date: 2000-08-28

  Revised date: 2000-08-28

  Online published: 2000-08-28

摘要

采用柠檬酸络合和溶液浸渍两种方法制备Li1+xMn2 O4正极材料 ,用XRD和BET测试了材料晶体结构和比表面积 ,考察焙烧温度、Li/Mn比、起始原料对产物结构和电化学性能的影响 ,结果表明 ,焙烧温度与Li/Mn比是影响材料电化学性能的关键因素 ,确定了制备Li1+xMn2 O4材料最佳条件为 0≤x≤ 0 .0 5 ,焙烧温度 75 0°C ,所得电池材料首次充放电容量达到 1 2 0mAh/g .循环 5 0次后 ,其充放电容量为 1 1 5mAh/g .

本文引用格式

刘培松 , 刘兴泉 , 李庆 , 陈召勇 , 张伯兰 . 液相法合成锂离子电池正极材料Li_(1+x)Mn_2O_4[J]. 电化学, 2000 , 6(3) : 363 -363 . DOI: 10.61558/2993-074X.3228

Abstract

The cathode materials Li 1+x Mn 2O 4 were prepared with citric acid complexing and solution impregnating methods.Structure characterization and specific surface area test were performed by means of XRD,BET methods ,the influences of calcination temperature,Li/Mn molar ratio and raw materials on the structure and electrochemical capacity of samples have beem examined.The results showed that the Li/Mn molar ratio and calcimation temperature were the key factors affecting the electrochemical capacity of cathode materias.The optimum conditions for synthesis of Li 1+x Mn 2O 4 cathode material were 0≤x≤0.05 and calcined at 750°C.The initial capacity of the sample reached 120 mAh/g and capacity retention after 50 cycles was 115 mAh/g.

参考文献

[1] NagauraT .4thInternationalRechargeableBatterySeminar[C] .DeerfieldBeach ,Florida1990 . [2 ] TarasconJM ,GuyomardD .TheLi1+xMn2 O4 /Crocking chairsystem[J] ,ElectrochimicalActa,1993,38:12 2 1. [3] LiuW ,FarringtonGC ,ChaputF ,etal.SynthesisandelectrochemicalstudiesofspinephaseLiMn2 O4 cathodematerialspreparedbyPechiniprocess[J] .JElectrochemSoc,1996 ,14 3:879. [4 ] LiuW ,KowalK ,FarringtonGC .ElectrochemicalcharacteristicsofspinelphaseLiMn2 O4basedcathodematerialspreparedbythePechiniProcess Influenceoffiringtemperatureanddopants[J] .JElectrochemSoc,1996 ,14 3:35 90 . [5 ] XiaYY ,TakeshigeH ,NoguchiH ,etal.StudiesonanLi Mn Ospinelsystem(obtainedbymelt impregnation)ascathodefor 4Vlithiumbatteries PartI.Synthesisandelectrochemi calbehaviorofLixMn2 O4 [J] .JPowerSource.1995 ,5 6 :6 1. [6 ] XiaYY ,YoshioM .StudiesonanLi Mn Ospinelsystem(obtainedbymelt impregnation)ascathodefor 4Vlithiumbatteries PartⅡ .Optimumspinelfromγ MnOOH [J] .PowerSiurce .1995 ,5 7:1.
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