| 锂离子电池用正极材料LiNi_(1-x)Co_xO_2的研究 |
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| 引用本文： | 王东,李国欣,潘延林,李来潮.锂离子电池用正极材料LiNi_(1-x)Co_xO_2的研究[J].上海航天,2001(4). |
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| 作者姓名： | 王东 李国欣 潘延林 李来潮 |
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| 作者单位： | 上海航天技术研究院811所!上海200233 |
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| 摘 要： | 采用高温固相法分别在空气和氧气气氛下合成锂离子电池正极材料LiNi1-xCoxO2 (x =1 ,0 .8,0 .5,0 .2 ,0 ) ,用X射线衍射 (XRD)测定晶格结构和晶胞参数 ,并用CR2 0 2 5扣式电池及 1 8650型电池对材料充放电性能进行测试。试验结果表明 ,随着LiNi1-xCoxO2 中钴含量增加 ,晶胞参数a和c值依次减小 ,晶胞体积收缩。同时烧结气氛对材料结构和电化学性能影响极大 ,氧气气氛有助于LiNi1-xCoxO2 (x >0 )的生成
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| 关 键 词： | 锂离子电池 锂钴氧化物 锂钴镍氧化物 |
The Study on Cathode Materials of Lithium Nickle and Cobalt Oxides for Liyhium-Ion Batteries |
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| WANG Dong,LI Guo xin,PAN Yan lin,LI Lai chao.The Study on Cathode Materials of Lithium Nickle and Cobalt Oxides for Liyhium-Ion Batteries[J].Aerospace Shanghai,2001(4). |
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| Authors: | WANG Dong LI Guo xin PAN Yan lin LI Lai chao |
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| Abstract: | The cathode materials LiNi 1- x Co x O 2( x =1,0.8,0.5,0.2,0) for lithium ion batteries were synthesized by solid phase method in high temperature. Their crystal structures and cell parameters were mearused with X ray diffraction. Charging and discharging button cells and 18650 type lithium ion batteries with above cathode materials are tested to evaluate their electrochemical performances. The results showed that with the incresment of the cobalt content in LiNi 1- x Co x O 2, the value of a and c would decrese in sequence and cell bulk would shrink. Sintering atomosphere has an imporant effect on materials' structure and electrochemical characteristion, oxygen is in favor of synthesizing LiNi 1- x Co x O 2( x >0). |
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| Keywords: | Lithium ion battery Lithium cobalt oxide Lithium nickle and cobalt oxide |
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