Study about thermal runaway behavior of high specific energy density Li-ion batteries in a low state of charge

• 来源期刊: 能源化学
• 年，卷（期）: 2021,（1）
• 页码范围: 20-27
• 页数: 8页
• 语种: 英文

摘要

Lithium-ion batteries are widely used in electric vehicles and electronics,and their thermal safety re-ceives widespread attention from consumers.In our study,thermal runaway testing was conducted on the thermal stability of commercial lithium-ion batteries,and the internal structure of the battery was analyzed with an in-depth focus on the key factors of the thermal runaway.Through the study of the structure and thermal stability of the cathode,anode,and separator,the results showed that the phase transition reaction of the separator was the key factor affecting the thermal runaway of the battery for the condition of a low state of charge.