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电化学(中英文) ›› 2004, Vol. 10 ›› Issue (4): 409-414. 

• 研究论文 • 上一篇    下一篇

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,阎杰   

  1. 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 出版日期:2004-11-28 发布日期: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, YAN-Jie   

  1. (Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
  • Received:2004-11-28 Revised:2004-11-28 Published:2004-11-28 Online: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.

关键词: 锂离子电池, 正极材料, LiCoxNi1-xO2, 并联电解

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%.

Key words: Lithium ion battery, Cathode material, LiCo_(x)Ni_(1-x)O_(2, )Electrolysis

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