| 低共熔混合锂盐合成Co和Al共掺杂的LiNiO2 |
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| 引用本文： | 常照荣,齐霞,吴锋,汤宏伟,王蒋亮.低共熔混合锂盐合成Co和Al共掺杂的LiNiO2[J].化学工程,2006,34(12):50-53. |
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| 作者姓名： | 常照荣 齐霞 吴锋 汤宏伟 王蒋亮 |
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| 作者单位： | 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;河南师范大学,化学与环境科学学院,河南,新乡,453007;北京理工大学,化工与环境学院,北京,100080 |
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| 基金项目： | 国家自然科学基金资助项目(90206043) |
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| 摘 要： | 在空气中,采用低共熔混合物L iNO3-L iOH为锂盐,制备了Co和A l共掺杂锂离子电池正极材料L iN i0.8Co0.15A l0.05O2。XRD分析表明,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的放电电流密度和2.7—4.2 V的电压范围内,L iN i0.8Co0.15A l0.05O2首次放电比容量达147.6 mA.h/g,库仑效率达84.3%,第20次的放电比容量为133.8 mA.h/g。该合成新工艺,能制备出电化学性能良好的Co和A l共掺杂的L iN iO2正极材料。
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| 关 键 词： | 锂离子电池 熔融盐 正极材料 |
| 文章编号： | 1005-9954（2006）12-0050-04 |
Preparation of Co and Al coped LiNiO2 cathode material by using eutectic mixed lithium salt with lower melting point |
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| CHANG Zhao-rong,QI Xia,WU Feng,TANG Hong-wei,WANG Jiang-liang.Preparation of Co and Al coped LiNiO2 cathode material by using eutectic mixed lithium salt with lower melting point[J].Chemical Engineering,2006,34(12):50-53. |
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| Authors: | CHANG Zhao-rong QI Xia WU Feng TANG Hong-wei WANG Jiang-liang |
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| Abstract: | In air atmosphere,Co and Al doped cathode materials LiNi_(0.8)Co_(0.15)Al_(0.05)O_2 was prepared by using molten salt LiNO_3-LiOH with lower melting point as lithium salt for lithium ion battery.XRD results show that the prepared cathode materials have 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_(0.15)Al_(0.05)O_2 is 147.6 mA·h/g,and coulomb efficiency is 84.3%.The discharge specific capacity is 133.8 mA·h/g for 20th cycle.Co and Al doped cathode materials LiNiO_2 with good electrochemical property can be prepared by this new technology. |
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| Keywords: | lithium ion battery molten salt cathode material |
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