Investigation of Electrolytes Utilized for High-voltage LiNi0.5Mn1.5O4 Batteries
文献类型：会议论文
| 作者 | Qin, Yinping; Lin, Huan; Liu, Yang; Wang, Deyu |
| 出版日期 | 2017 |
| 会议日期 | OCT 27-29, 2017 |
| 关键词 | CATHODE MATERIAL LI-ION ASSISTED SYNTHESIS LITHIUM CARBONATE SULFITE SYSTEM |
| 卷号 | 1890 |
| DOI | 10.1063/1.5005204 |
| 英文摘要 | The main challenge of high-voltage LiNi0.5Mn1.5O4 (LNMO), which is one of the most promising cathodes with the redox plateau of similar to 4.75V vs Li+ /Li, is the decomposition of electrolyte. In fact, our studies show that LNMO presents the good capacity retention ratio, higher than 80% after 300 cycles, in the electrolyte with the mixture of pure carbonate solvents. Even 92% of the initial capacity in the 300th cycle is remained in the optimal composition. Obviously, high-voltage LiNio sMni 504 can get excellent cycle performance without any special additives. In addition, we studied the electrochemical behavior of viny lene carbonate (VC) and ethylene sulfite (ES) in high potential. The results indicate that VC and ES can be electrochemically oxidized at 4.6 V and 4.05 V vs Li /Li, respectively. In the cells with the electrolytes containing VC and ES respectively, the discharge capacities are significantly diminished. Also, the thick and high-resistance sediment layers are formed on the surface of LNMO. We concluded that the SEI-forming additives widely used in commercial batteries may firstly decompose on cathode side. Therefore, the electrolyte systems should be redesigned for graphite-LNMO batteries. |
| 会议录出版者 | AIP Conference Proceedings |
| 学科主题 | Materials Science ; Physics |
| ISSN号 | 0094-243X |
| ISBN号 | 978-0-7354-1568-3 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23399]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Qin, Yinping,Lin, Huan,Liu, Yang,et al. Investigation of Electrolytes Utilized for High-voltage LiNi0.5Mn1.5O4 Batteries[C]. 见:. OCT 27-29, 2017. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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