电源技术2024，Vol.48Issue(8)：1554-1560,7.DOI:10.3969/j.issn.1002-087X.2024.08.016
锂金属阳极表面SEI膜的制备与研究
Preparation and study of SEI film on surface of lithium metal anode
摘要
Abstract
The surface of lithium anode was artificially modified with SEI layer by wetting lithium metal anode in copper fluoride mixture. The effect of different concentration of fluorination solution and infiltration time on the formation of SEI film on the anode surface was systematically observed. The optimal experimental condition was selected for 10 s infiltration with 1.0％ CuF2 concentration. The cycle time of lithium metal batteries,the deposition of lithium on the anode interface and the me-chanical properties of SEI layer were studied by electrochemical testing and morphological character-ization. The results show that the artificial SEI layer increases the cycle time of lithium batteries by 160％ to 446％ under different current densities,promotes the uniform deposition of lithium on the interface layer and significantly inhibits the growth of lithium dendrites. The research results have certain guiding significance for the study of long cycle and high rate charge and discharge of lithium metal batteries by surface modification.关键词
氟化铜/锂金属阳极/人工SEI层Key words
copper fluoride/lithium metal anode/artificial SEI layer分类
信息技术与安全科学引用本文复制引用
牟婧妍,王维宙,孙兆勇..锂金属阳极表面SEI膜的制备与研究[J].电源技术,2024,48(8):1554-1560,7.
