Mitigating thermal runaway of lithium‐ion battery by using thermally sensitive polymer blend as cathode binder
Journal Article
·
· Journal of Applied Polymer Science
- Department of Structural Engineering University of California—San Diego San Diego, CA 92093‐0085
- Program of Materials Science and Engineering University of California—San Diego San Diego, CA 92093‐0085
- Department of Structural Engineering University of California—San Diego San Diego, CA 92093‐0085, Program of Materials Science and Engineering University of California—San Diego San Diego, CA 92093‐0085
ABSTRACT
Thermally sensitive binder (TSB) is developed as an internal safety mechanism of lithium‐ion battery (LIB). The TSB is a polymer blend of poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVDF‐HFP). Compared with regular PVDF binder, the softening and swelling of TSB are more pronounced when temperature is above 110 °C. With the TSB, the cycling performance of LIB cell is not affected; upon nail penetration, the heat generation rate is significantly reduced. The crystallinity of TSB is an important factor. This technology may lead to the development of thermal‐runaway‐mitigating LIB cells. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45737.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- NONE; AR0000396
- OSTI ID:
- 1389665
- Journal Information:
- Journal of Applied Polymer Science, Journal Name: Journal of Applied Polymer Science Journal Issue: 4 Vol. 135; ISSN 0021-8995
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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