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| 低共熔混合锂盐合成LiNi_(0.8)Co_(0.2)O_2的研究 | |
| 引用本文： | 常照荣,齐霞,吴锋,汤宏,孙东.低共熔混合锂盐合成LiNi_(0.8)Co_(0.2)O_2的研究[J].应用化工,2005,34(9):535-538. |
| 作者姓名： | 常照荣 齐霞 吴锋 汤宏 孙东 |
| 作者单位： | 1. 北京理工大学,化工与环境学院,北京,100080;河南师范大学,化学与环境科学学院,河南,新乡,453007 2. 河南师范大学,化学与环境科学学院,河南,新乡,453007 3. 北京理工大学,化工与环境学院,北京,100080 |
| 基金项目： | 国家自然科学基金资助项目(90206043) |
| 摘 要： | 在空气气氛中,采用低共熔混合物L iNO3-L iOH为锂盐,制备出了锂离子电池正极材料L iN i0.8Co0.2O2。XRD分析表明:此工艺制得的正极材料具有完整的层状结构。电性能测试表明:在0.5 mA/cm2的充放电电流密度和2.7~4.2 V的电压范围内,L iN i0.8Co0.2O2首次放电比容量为145.2 mA.h/g,充放电库仑效率为83.8%;循环20次后,放电比容量为124.8 mA.h/g。该方法能制备出电化学性能良好的L iN i0.8Co0.2O2正极材料。 |
| 关 键 词： | 锂离子电池 熔融盐 正极材料 |
| 文章编号： | 1671-3206(2005)09-0535-04 |
| 修稿时间： | 2005年7月25日 |
Preparation of LiNi0.8 Co0.2 O2 using eutectic mixed lithium salt |
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| CHANG Zhao-rong,QI Xia,WU Feng,TANG Hong-wei,SUN Dong.Preparation of LiNi0.8 Co0.2 O2 using eutectic mixed lithium salt[J].Applied chemical industry,2005,34(9):535-538. | |
| Authors: | CHANG Zhao-rong QI Xia WU Feng TANG Hong-wei SUN Dong |
| Affiliation: | CHANG Zhao-rong~ |
| Abstract: | In air atmosphere,using eutectic mixture of LiNO_(3)-LiOH as lithium salt to prepare cathode materials LiNi_(0.8)Co_(0.2)O_(2) for lithium ion battery.XRD results showed the prepared cathode materials had perfect layer structure.Electrochemical property tests testified that for charge-discharge current density of(0.5)mA/cm~2 and voltage of 2.7 V and 4.2 V,the initial discharge specific capacity of prepared LiNi_(0.8)-Co_(0.2)O_(2) was 145.2 mA·h/g and the coulomb efficiency was 83.8%.The discharge specific capacity remains 124.8 mA·h/g after the 20th cycles,indicating cathode material LiNi_(0.8)Co_(0.2)O_(2) with good electrochemical property can be prepared by this technology. |
| Keywords: | lithium ion battery melting salt cathode material |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
