期刊
JOULE
卷 6, 期 12, 页码 2810-2820出版社
CELL PRESS
DOI: 10.1016/j.joule.2022.10.010
关键词
-
资金
- National Natural Science Foundation of China
- [52076121]
This research successfully controls the thermal failure process of liquid batteries by manipulating the deleterious reactions at an earlier stage. By designing safety countermeasures, commercial Li-ion batteries can be effectively prevented from thermal runaway.
Li-ion batteries are regarded as unsafe due to the volatility and flammability of the organic liquid electrolytes. However, research on substitutes (solid, inorganic, etc.) still encounters tough obstacles toward commercialization. Here, we manage to control the thermal failure process of liquid batteries by manipulating the deleterious reactions at an earlier stage, where heat accumulates mildly before accelerating to catastrophes. We reveal that the reductive gases, specifically those with low bond dissociation energies (unsaturated hydrocarbons as alkenes and alkynes), can induce cathode crystal change with oxygen release and initiate and accelerate battery thermal failure from lower than 80 degrees C. Four safety countermeasures to break this reductive attackpathway are designed and successfully prevent commercial Li-ion batteries from thermal runaway (capacity of 60 Ah and energy density of 280 Wh kg -1). We anticipate that our new safety insights and methodologies will overcome the limitations of liquid electrolytes for safe energy applications.
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