Improvement of the high-temperature, high-voltage cycling performance of LiNi0.5Co0.2Mn0.3O2 cathode with TiO2 coating
文献类型：期刊论文
| 作者 | Liu, Wen1; Wang, Miao1; Gao, Xing Long2; Zhang, Weidong1; Chen, Jitao1; Zhou, Henghui1; Zhang, Xinxiang1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2012-12-05 |
| 卷号 | 543页码:181-188 |
| 关键词 | Lini0.5co0.2mn0.3o2 Cycling Performance High Temperature Metal Dissolution Tio2 Coating |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2012.07.074 |
| 英文摘要 | The high-temperature cycling stability at a high cutoff voltage of LiNi0.5Co0.2Mn0.3O2 was improved by TiO2 coating. The mechanism of enhancement was elucidated by electrochemical impedance spectroscopy (EIS). X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analyses. TiO2 coating formed a uniform layer on the surface of LiNi0.5Co0.2Mn0.3O2 particles without changing the crystal structure. Electrochemical tests indicated that TiO2 coating can improve the lithium ion intercalation stability at 328 K and at a high cutoff voltage of 4.4 V. The 1.0% TiO2-coated LiNi0.5Co0.2Mn0.3O2 discharged 149.2 mAh g(-1) after 100 cycles at 0.5C, and maintained 92.1% of the initial discharge capacity. By contrast, the bare sample discharged only 87.7 mAh g(-1) with 48.2% capacity retention. ICP-AES results proved that the TiO2 coating layer can reduce the dissolution of transition metal ions from LiNi0.5Co0.2Mn0.3O2. EIS and XPS confirmed that the improved cycling stability can be attributed to the suppression of the reaction between cathode and electrolyte in lithium-ion batteries. (C) 2012 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000311195000032 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47925]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Jitao |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Pulead Technol Ind Co Ltd, Beijing 102200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wen,Wang, Miao,Gao, Xing Long,et al. Improvement of the high-temperature, high-voltage cycling performance of LiNi0.5Co0.2Mn0.3O2 cathode with TiO2 coating[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2012,543:181-188. |
| APA | Liu, Wen.,Wang, Miao.,Gao, Xing Long.,Zhang, Weidong.,Chen, Jitao.,...&Zhang, Xinxiang.(2012).Improvement of the high-temperature, high-voltage cycling performance of LiNi0.5Co0.2Mn0.3O2 cathode with TiO2 coating.JOURNAL OF ALLOYS AND COMPOUNDS,543,181-188. |
| MLA | Liu, Wen,et al."Improvement of the high-temperature, high-voltage cycling performance of LiNi0.5Co0.2Mn0.3O2 cathode with TiO2 coating".JOURNAL OF ALLOYS AND COMPOUNDS 543(2012):181-188. |
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来源：化学研究所
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