4.8 Article

A new method to explore thermal and venting behavior of lithium-ion battery thermal runaway

期刊

JOURNAL OF POWER SOURCES
卷 486, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jpowsour.2020.229357

关键词

Lithium-ion battery safety; Gas generation; Thermal runaway; Internal pressure

资金

  1. National Natural Science Foundation of China [U2033204]
  2. Key R&D Program of Guangdong Province [2020B090919004]
  3. Youth Innovation Promotion Association CAS [Y201768]

向作者/读者索取更多资源

This study introduces a simple but novel method to investigate the thermal runaway of lithium-ion batteries. By using battery cells without the cap, the pressure sources can be decoupled, providing a more accurate method to describe gas generation. The research fills the knowledge gap of measuring internal pressure and offers insights into the relationship between temperature increasing rate and gas generation rate.
Along with the popularization of the lithium-ion battery (LIB), much more attention is attracted to its problem of thermal runaway. This paper proposes a simple but novel method to investigate the gas generation throughout the process of thermal runaway. The novelty from the previous study lies in that the battery cells without the cap are used as the test samples. The naked battery offers a key to decouple the pressure caused by the vapor of electrolyte and that of the gases generated in the chemical reaction. This study makes up the knowledge gap of measuring internal pressure before the venting behavior and provides a more accurate method to describe the gas generation of thermal runaway. Three 100% state of charge LIBs with the cathode of LiNi0.8Co0.1Mn0.1O2 are used as tested samples to illustrate the application of this method. Two important results are withdrawn from the samples' test: (I) the relationship between temperature increasing rate and gas generation rate is not linear until battery temperature approaches the uncontrollable temperature; (II) the partial pressure of gas generated due to the redox reactions bears the major responsibility for the safety valve opening.

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。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据