Rare Earth Elements-Doped LiCoO2 Cathode Material for Lithium-Ion Batteries
来源期刊：JOURNAL OF RARE EARTHS2003年第4期
论文作者：阎杰 叶茂 潘桂玲 曹晓燕 魏进平
Key words：metallic material; lithium-ion battery; doping; cathode materials; LiCoO2; rare earths;
Abstract: Some compounds of LiCo1-xRExO2 (RE=rare earth elements and x=0.01～0.03) were prepared by doping rare earth elements to LiCoO2 via solid state synthesis. The microstructure characteristics of the LiCo1-xRExO2 were investigated by XRD. It was found that the lattice parameters c are increased and the lattice volumes are enlarged compared to that of LiCoO2. Moreover, the performance of LiCo1-xRExO2 as the cathode material in lithium ion battery is improved, especially LiCo1-xYxO2 and LiCo1-xLaxO2. The initial charge/discharge capacities of LiCo0.99Y0.01O2 and LiCo0.99La0.01O2 are 174/154 (mAh*g-1) and 159/149 (mAh*g-1) respectively, while those for LiCoO2 working in the same way are only 139/131 (mAh*g-1).
阎杰1，叶茂1，潘桂玲2，曹晓燕3，魏进平1
(1.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China;
2.State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China;
3.College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China)
Abstract:Some compounds of LiCo1-xRExO2 (RE=rare earth elements and x=0.01～0.03) were prepared by doping rare earth elements to LiCoO2 via solid state synthesis. The microstructure characteristics of the LiCo1-xRExO2 were investigated by XRD. It was found that the lattice parameters c are increased and the lattice volumes are enlarged compared to that of LiCoO2. Moreover, the performance of LiCo1-xRExO2 as the cathode material in lithium ion battery is improved, especially LiCo1-xYxO2 and LiCo1-xLaxO2. The initial charge/discharge capacities of LiCo0.99Y0.01O2 and LiCo0.99La0.01O2 are 174/154 (mAh*g-1) and 159/149 (mAh*g-1) respectively, while those for LiCoO2 working in the same way are only 139/131 (mAh*g-1).
Key words:metallic material; lithium-ion battery; doping; cathode materials; LiCoO2; rare earths;
【全文内容正在添加中】
