Improving the electrochemical performance of Li-rich Li1.2Ni0.2Mn0.6O2 by using Ni-Mn oxide surface modification
文献类型：期刊论文
| 作者 | Ding, Xiang; Xiao, Li-Na; Li, Yi-Xuan; Tang, Zhong-Feng; Wan, Jia-Wei; Wen, Zhao-Yin; Chen, Chun-Hua |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2018 |
| 卷号 | 390页码:13 |
| 关键词 | Li-rich cathode Surface modification Cycling stability Rate capability Energy efficiency |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2018.04.034 |
| 英文摘要 | The surface lithium residues on Li-rich layered cathode materials xLi(2)MnO(3)center dot(1-x)LiMO2 (M = Mn, Co, Ni, etc.) are harmful to their electrochemical properties. In this work, the surface lithium residues of Li-rich Li2.2Ni0.2Mn0.6O2 (LNMO) are identified as Li2CO3 and LiOH by Fourier transform IR for the first time. To overcome this issue, Ni/Mn acetates are used to react with the surface lithium residues to form a LiNi0.5Mn1.5O4 spinel coating layer on LNMO particles. Compared with the bare LNMO sample, the 1 wt% LiNi0.5Mn1.5O4 coated LNMO shows improved long-term cycling stability and rate capability both at room temperature and 55 degrees C. The coated one delivers an initial discharge capacity of 236 mAh g(-1) with 99.6% capacity retention after 100 cycles at 0.5 C, while it is only 230 mAh g(-1) with 91% capacity retention for the bare LNMO. After the surface modification, the rate capacity increases from 155 mAh g(-1) to 180 mAh g(-1) at 5 C at room temperature while the energy efficiency is improved from 78% to 85%. |
| 学科主题 | Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000434748000002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | This work was supported by the National Science Foundation of China (grant no. 51577175), NSAF (grant no. U1630106). We are also grateful to Elementec Ltd in Suzhou for its technical support. ; This work was supported by the National Science Foundation of China (grant no. 51577175), NSAF (grant no. U1630106). We are also grateful to Elementec Ltd in Suzhou for its technical support. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24851]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.[Ding, Xiang 2.Xiao, Li-Na 3.Li, Yi-Xuan 4.Tang, Zhong-Feng 5.Wan, Jia-Wei 6.Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 7.[Ding, Xiang 8.Xiao, Li-Na 9.Li, Yi-Xuan 10.Tang, Zhong-Feng |
| 推荐引用方式 GB/T 7714 | Ding, Xiang,Xiao, Li-Na,Li, Yi-Xuan,et al. Improving the electrochemical performance of Li-rich Li1.2Ni0.2Mn0.6O2 by using Ni-Mn oxide surface modification[J]. JOURNAL OF POWER SOURCES,2018,390:13, 19. |
| APA | Ding, Xiang.,Xiao, Li-Na.,Li, Yi-Xuan.,Tang, Zhong-Feng.,Wan, Jia-Wei.,...&Chen, Chun-Hua.(2018).Improving the electrochemical performance of Li-rich Li1.2Ni0.2Mn0.6O2 by using Ni-Mn oxide surface modification.JOURNAL OF POWER SOURCES,390,13. |
| MLA | Ding, Xiang,et al."Improving the electrochemical performance of Li-rich Li1.2Ni0.2Mn0.6O2 by using Ni-Mn oxide surface modification".JOURNAL OF POWER SOURCES 390(2018):13. |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。