标题
作者
作者:Wang, CY (Wang, Chengyun)[1,2 ]; Yu, L (Yu, Le)[4 ]; Fan, WZ (Fan, Weizhen)[4 ]; Liu, JW (Liu, Jiangwen)[1,2 ]; Ouyang, LZ (Ouyang, Liuzhang)[1,2,3 ]; Yang, LC (Yang, Lichun)[1,2 ]; Zhu, M (Zhu, Min)[1,2 ]
期刊信息
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文献类型:Article
摘要
3,3'-(Ethylenedioxy)dipropiononitrile (EDPN) has been introduced as a novel electrolyte additive to improve the oxidation stability of the conventional carbonate-based electrolyte for LiNi1/3Co1/3Mn1/3O2/graphite pouch batteries cycled under high voltage. Mixing 0.5 wt % EDPN into the electrolyte greatly improved the capacity retention, from 32.5% to 83.9%, of cells cycled for 100 times in the range 3.0-4.5 V with a rate of 1C. The high rate performance (3C and 5C) was also improved, while the cycle performance was similar to that of the cell without EDPN when cycled between 3.0 and 4.2 V. Further evidence of a stable protective interphase film can be formed on the LiNi1/3Co1/3Mn1/3O2 electrode surface due to the presence of EDPN in the electrolyte. This process effectively suppresses the oxidative growth in the charge-transfer resistance of the LiNi1/3Co1/3Mn1/3O2 electrode and electrochemical properties for the cells. In contrast, EDPN has no positive effect LiNi0.5Co0.2Mn0.3O2-based cell under high operating voltage.
关键词
作者关键词:3,3 '-(ethylenedioxy)dipropiononitrile; high voltage; electrolyte additive; cathode surface passivation; LiNi1/3Co1/3Mn1/3O2/graphite
作者信息
通讯作者地址:Ouyang, LZ (通讯作者)
 | South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China. |
| China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Peoples R China. |
| Key Lab Fuel Cell Technol Guangdong Provice, Guangzhou 510641, Peoples R China. |
地址:
电子邮件地址:meouyang@scut.edu.cn
出版商
类别分类
研究方向:Science & Technology - Other Topics; Materials Science
Web of Science 类别:Nanoscience & Nanotechnology; Materials Science, Multidisciplinary