An electrolyte additive for thermal shutdown protection of Li-ion batteries

作者：Xia, Lan; Wang, Dongdong; Yang, Hanxi; Cao, Yuliang; Ai, Xinping^*

来源：Electrochemistry Communications, 2012, 25: 98-100.

DOI：10.1016/j.elecom.2012.09.038

• Lithium ion batteries
• 1,1 '-(Methylenedi-4,1-phenylene) bismaleimide
• Thermal shutdown
• Electrolyte additive
• Thermal protection

A thermally polymerizable monomer, 1,1'-(methylenedi-4,1-phenylene) bismaleimide (BMI), is investigated as a safety electrolyte additive for thermal protection of lithium ion batteries. The experimental results demonstrate that the BMI additive can polymerize to cause the rapid solidification of electrolyte at 110 degrees C, which can effectively block off the ion transport between electrodes, thus generating a thermal shutdown of the electrode reactions for safe control of lithium ion batteries. Meanwhile, the addition of BMI additive has no significant influence on the normal charge-discharge performance of rechargeable lithium batteries, showing a great prospect for battery applications.

• 出版日期2012-11
• 单位武汉大学