期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 14, 期 4, 页码 3139-3152出版社
ESG
DOI: 10.20964/2019.04.14
关键词
lithium rich cathode material; MgF2 coating; cycling performance
资金
- National Natural Science Foundation of China [51572024, DG71-16-025]
In this paper, lithium rich manganese based cathode materials were successfully modified by MgF2 and the corresponding function mechanism was studied in detail. The MgF2 coating inhibits the activation of Li2MnO3 and induces the formation of spinel phase. The MgF2-3 shows an enhanced initial discharge capacity of 282.6 m Ah g(-1) and an improved coulombic efficiency of 87.15% compared to 267.8 m Ah g(-1) and 74.41% for the pristine sample, respectively. The MgF2 modification can effectively inhibit HF corrosion, reduce side effects and improve cycle performance. The MgF2-3 shows a discharge capacity of 205.6 m Ah g(-1) with a retention of 80.03% and a voltage of 442.2 mV after 200 cycles, while for the pristine is only 147.9 m Ah g(-1), 66.71%, 672.3 mV, respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据