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研究论文

金属并联电解制备LiCo_xNi_(1-x)O_2正极材料

  • 魏进平 ,
  • 孙欣 ,
  • 王晓宇 ,
  • 卞锡奎 ,
  • 翟金玲
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  • 南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所 天津300071 ,天津300071 ,天津300071 ,天津300071 ,天津300071 ,天津300071

收稿日期: 2004-11-28

  修回日期: 2004-11-28

  网络出版日期: 2004-11-28

LiCo_(x)Ni_(1-x)O_2 Cathode Materials Prepared by Electrolysis of Co and Ni

  • WEI Jin-ping~ ,
  • SUN Xin ,
  • WANG Xiao-yu ,
  • BIAN Xi-kui ,
  • ZHAI Jin-ling
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  • (Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

Received date: 2004-11-28

  Revised date: 2004-11-28

  Online published: 2004-11-28

摘要

应用钴、镍金属并联电解法制备锂离子电池正极材料.电解反应时,调节流过钴、镍电极上的电流比值及控制合适的电流密度,可生成均匀的CoxNi1-x(OH)2前驱体.研究表明,该法简单且无污染.合成的LiCo0.3Ni0.7O2正极材料充放电的容量较高,循环稳定性也较好,其初始放电容量为163mAh/g,经过50次充放电循环后放电容量仍可保持140mAh/g.

本文引用格式

魏进平 , 孙欣 , 王晓宇 , 卞锡奎 , 翟金玲 . 金属并联电解制备LiCo_xNi_(1-x)O_2正极材料[J]. 电化学, 2004 , 10(4) : 409 -414 . DOI: 10.61558/2993-074X.1594

Abstract

A new electrolytic method was developed to prepare LiCo_(x)Ni_(1-x)O_2 as a cathode material of lithium-ion battery. Contrary to the traditional method, electrolytic method is a potential method with simple process to industrialization and no pollution. Metal cobalt and nickel were electrolysed in parallel to prepare the precursor of Co_( x )Ni_(1- x )(OH)_2.Different compositional precursors could be conveniently prepared by changing electrolytic current. The LiCo_(0.3)Ni_(0.7)O_2 cathode prepared by this method was found favorable charge-discharge and cycle properties. For the LiCo_(0.3)Ni_(0.7)O_(2 )cathode material, the discharge capacities in the 1st and 50th cycles were 163 mAh/g and 140 mAh/g with charge retention of 86%.

参考文献

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