Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 25, Issue -, Pages 98-100Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.09.038
Keywords
Lithium ion batteries; 1,1 '-(Methylenedi-4,1-phenylene) bismaleimide; Thermal shutdown; Electrolyte additive; Thermal protection
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Funding
- 973 Program of China [2009CB220100]
- National 863 Program of China [2011AA11A256, 2011AA11A254]
- Fundamental Research Funds for the Central University
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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. (C) 2012 Elsevier B.V. All rights reserved.
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