期刊
JOURNAL OF POWER SOURCES
卷 546, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2022.231941
关键词
-
资金
- Hydro-Quebec's Center of Excellence in Transportation Electrification and Energy Storage, Varennes, Quebec
This study used conventional X-ray diffraction technique to monitor the lithium metal plating and stripping in anode free lithium batteries. It was observed that the lithium metal was not completely stripped off from the substrate and still existed even under constant voltage. This provides important information for reducing dead lithium metal and prolonging cycling life.
One of the main limitations to the application of anode free lithium battery is low Coulombic efficiency, this loss of capacity is due to irreversible processes, mainly the formation of dead lithium, the instability of electrolyte, etc. In this work, conventional x-ray diffraction technique was employed to monitor the lithium metal plating and stripping during cycling between 4.3 and 3 V using cells composed of 5 mu m thick copper current collector and LiN0.8Co0.1Mn0.1O2 cathode. We have observed that the lithium metal was not completely stripped off from the copper substrate at the end of discharge at a slow cycling rate of C/24 even in the first 2 cycles. In addition, the lithium metal was still seen following a constant voltage period of 3V despite at its reduced amount. The observation of this unreacted lithium metal unveils one of the important degradation mechanisms of anode free lithium battery, thus provides essential information for finding solution to reduce/ eliminate dead lithium metal and prolonging cycling life.
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