Electrochemical and in situ synchrotron XRD studies on Al2O3-coated LiCoO2 cathode material
文献类型：期刊论文
| 作者 | Liu, LJ ; Chen, LQ ; Huang, XJ ; Yang, XQ ; Yoon, WS ; Lee, HS ; McBreen, J |
| 刊名 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| 出版日期 | 2004 |
| 卷号 | 151期号:9页码:A1344 |
| 关键词 | LITHIUM-ION BATTERIES X-RAY-DIFFRACTION PHASE-TRANSITIONS LIXCOO2 INTERCALATION STABILITY CELL |
| ISSN号 | 0013-4651 |
| 通讯作者 | Liu, LJ: Chinese Acad Sci, Inst Phys, Nanoscale Phys & Devices Lab, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Using a commercial available LiCoO2 as starting material, surface-modified cathode material was obtained by coating its surface with a nanosize layer of amorphous Al2O3. Electrochemical performances and structural evolutions of the modified cathode material were characterized and compared with that of pristine LiCoO2. Specific capacity of 190 mAh/g was obtained in Li/ (Al2O3-coated LiCoO2) experimental cells when charged to 4.5 V. The relationship between the structural evolution and the electrochemical performances at overcharged state was investigated using in situ synchrotron X-ray diffraction (XRD). After charging the half-cell using uncoated LiCoO2 as cathode, the variation of the c value in hexagonal structure is significantly reduced during subsequent cycles. This reduction in c variation range is concurrently related to the capacity fading. In contrast, the variation range of c is preserved in the Al2O3-coated cathodes, and so is capacity. Based on these results, a capacity fading mechanism of LiCoO2-type cathode materials after overcharge is proposed, and an explanation of the surface coating effects is given. (C) 2004 The Electrochemical Society. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36987]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, LJ,Chen, LQ,Huang, XJ,et al. Electrochemical and in situ synchrotron XRD studies on Al2O3-coated LiCoO2 cathode material[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2004,151(9):A1344. |
| APA | Liu, LJ.,Chen, LQ.,Huang, XJ.,Yang, XQ.,Yoon, WS.,...&McBreen, J.(2004).Electrochemical and in situ synchrotron XRD studies on Al2O3-coated LiCoO2 cathode material.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,151(9),A1344. |
| MLA | Liu, LJ,et al."Electrochemical and in situ synchrotron XRD studies on Al2O3-coated LiCoO2 cathode material".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 151.9(2004):A1344. |
入库方式： OAI收割
来源：物理研究所
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