| 正极材料Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti，Al；x=0，0.02)电化学行为的比较研究 |
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| 引用本文： | 曹四海,王志兴,李新海,吕莹,郭华军,彭文杰.正极材料Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti，Al；x=0，0.02)电化学行为的比较研究[J].无机化学学报,2006,22(8):1540-1544. |
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| 作者姓名： | 曹四海 王志兴 李新海 吕莹 郭华军 彭文杰 |
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| 作者单位： | 中南大学冶金科学与工程学院,长沙,410083 |
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| 基金项目： | 中南大学校科研和教改项目 |
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| 摘 要： | 0IntroductionMany efforts have been made to develop newmaterials as an alternative to LiCoO2due to the rela-tively high cost and toxicity of Co.Much attention hasbeen paid to layered structure cathode materials suchas LiMnO2and LiNiO2due to their lower co…
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| 关 键 词： | 锂离子电池 LiNi0.5Mn0.5O2 掺杂 固相法 |
| 文章编号： | 1001-4861(2006)08-1540-05 |
| 收稿时间： | 2006-02-20 |
| 修稿时间： | 2006-05-18 |
Comparative Study on Electrochemical Behavior of Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti, Al; x=0, 0.02) Cathode Materials |
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| CAO Si-Hai,WANG Zhi-Xing,LI Xin-Hai,LU Ying,GUO Hua-Jun and PENG Wen-Jie.Comparative Study on Electrochemical Behavior of Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti, Al; x=0, 0.02) Cathode Materials[J].Chinese Journal of Inorganic Chemistry,2006,22(8):1540-1544. |
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| Authors: | CAO Si-Hai WANG Zhi-Xing LI Xin-Hai LU Ying GUO Hua-Jun and PENG Wen-Jie |
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| Institution: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083,School of Metallurgical Science and Engineering, Central South University, Changsha 410083 and School of Metallurgical Science and Engineering, Central South University, Changsha 410083 |
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| Abstract: | Layered Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti, Al; x=0, 0.02) cathode materials for lithium-ion batteries were synthesized by one step solid-state method using Ni(OH)2, MnCO3, Li2CO3, TiO2 and Al(OH)3 as starting materials. The effect of Ti and Al doping on the structure and electrochemical performance of Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti, Al; x=0, 0.02) has been investigated. LiNi0.5Mn0.5O2, Li(Ni0.5Mn0.5)0.98Ti0.02O2 and Li(Ni0.5Mn0.5)0.98Al0.02O2 delivered 149 mAh·g-1, 160 mAh·g-1, 164 mAh·g-1, respectively, at a current of 20 mA·g-1 between 2.5 V and 4.3 V at room temperature, and remained 86%, 91%, 91% of the initial discharge capacity respectively after 30 cycles. AC impedance studies show that Ti and Al doping in Li(Ni0.5Mn0.5)1-xMxO2 (M=Ti, Al; x=0, 0.02) decreased the resistance of charge transfer Rct of cathode materials. |
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| Keywords: | lithium-ion battery LiNi0 5Mn0 5O2 doping solid-state method |
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