Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO
文献类型：期刊论文
| 作者 | Ma, Fei1,2; Wu, Yinghong1,2; Wei, Guangye1; Qiu, Shufeng3; Qu, Jingkui1 |
| 刊名 | JOURNAL OF SOLID STATE ELECTROCHEMISTRY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 23期号:7页码:2213-2224 |
| 关键词 | LiNi0.8Co0.1Mn0.1O2 Wet-chemical coating Magnesium oxide Magnesium ethoxide Overpotential |
| ISSN号 | 1432-8488 |
| DOI | 10.1007/s10008-019-04308-3 |
| 英文摘要 | LiNi0.8Co0.1Mn0.1O2 (NCM811) has a high potential for using as the cathode material for lithium-ion batteries (LIBs) for electric vehicles owing to its high energy density and low cost. However, its poor rate capability and cycling performance have significantly hindered its application. In this study, we successfully design a uniform magnesium oxide (MgO) coating on NCM811 via a wet-chemical coating followed by heat treatment using magnesium ethoxide [Mg (OEt)(2)] dissolved in ethanol as the Mg source. The effects of MgO coating on the surface states, crystal structure, and electrochemical performances of NCM811 cathode material are studied in detail. After 100 cycles, the capacity retention of MgO-coated NCM811 is 90.1% at room temperature at 1 C, whereas the pristine NCM811 is only 74.5%. Besides, the MgO-coated NCM811 delivers a better rate property than pristine NCM811. Prominent improvements in electrochemical performances are attributed to the fact that the formation of MgO coating layer helps to suppress deleterious side reactions, lower the overpotential on the surface, and facilitate lithium-ion diffusion. |
| WOS关键词 | RICH LINI0.6CO0.2MN0.2O2 CATHODE ; LITHIUM-ION BATTERIES ; RATE CAPABILITY ; POSITIVE ELECTRODE ; AL2O3 ; LI ; LINI1/3CO1/3MN1/3O2 ; STABILITY ; CAPACITY ; OXIDE |
| 资助项目 | Science and Technology Service Network Plan of the Chinese Academy of Sciences[KFJ-STS-ZDTP-040] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2018-1] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000474477800025 |
| 出版者 | SPRINGER |
| 资助机构 | Science and Technology Service Network Plan of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30143]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Qu, Jingkui |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 3.Hangzhou Zhonghao Technol Co Ltd, Hangzhou 310000, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Fei,Wu, Yinghong,Wei, Guangye,et al. Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2019,23(7):2213-2224. |
| APA | Ma, Fei,Wu, Yinghong,Wei, Guangye,Qiu, Shufeng,&Qu, Jingkui.(2019).Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,23(7),2213-2224. |
| MLA | Ma, Fei,et al."Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 23.7(2019):2213-2224. |
入库方式： OAI收割
来源：过程工程研究所
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