| LiCoO2中锂离子固相扩散系数随循环次数的变化 |
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| 引用本文： | 金乐,唐新村,潘春跃,蒋呈奎.LiCoO2中锂离子固相扩散系数随循环次数的变化[J].无机化学学报,2007,23(7):1238-1241. |
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| 作者姓名： | 金乐 唐新村 潘春跃 蒋呈奎 |
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| 作者单位： | 中南大学化学化工学院,长沙,410083 |
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| 摘 要： | The solid diffusion coefficient of lithium-ion in LiCoO2 cathode material has been investigated by the capacity intermittent titration technique (CITT) at different voltages and at different charge/discharge cycles. By SEM, XRD and FTIR techniques, the structure of LiCoO2 was studied before and after charge-discharge cycles, and the relationship between solid diffusion coefficient and crystal structure was further discussed. CITT results show that the value of Li+ solid diffusion coefficient of LiCoO2 is about 10-12 cm2·s-1. During the whole charge-discharge cycles, the Li+ solid diffusion coefficient decreased within the voltage of 4.0～4.3 V, which is attributed to the change of the structure of LiCoO2.
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| 关 键 词： | 容量间歇滴定技术(CITT) LiCoO2 固相扩散系数 锂离子电池 |
| 文章编号： | 1001-4861（2007）07-1238-04 |
| 修稿时间： | 2006-12-122007-04-18 |
Variation of Solid Diffusion Coefficient for Lithium Ions in LiCoO2 with Charge-discharge Cycles |
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| JIN Le,TANG Xin-Cun,PAN Chun-Yue and JIANG Cheng-Kui.Variation of Solid Diffusion Coefficient for Lithium Ions in LiCoO2 with Charge-discharge Cycles[J].Chinese Journal of Inorganic Chemistry,2007,23(7):1238-1241. |
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| Authors: | JIN Le TANG Xin-Cun PAN Chun-Yue and JIANG Cheng-Kui |
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| Institution: | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 and College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 |
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| Abstract: | |
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| Keywords: | capacity intermittent titration technique (CITT) lithium cobalt oxide solid diffusion coefficient lithium-ion battery |
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