title: Self-Extinguishing Lithium Ion Batteries Based on Internally Embedded Fire-Extinguishing Microcapsules with Temperature-Responsiveness.
abstract: User safety is one of the most critical issues for the successful implementation of lithium ion batteries (LIBs) in electric vehicles and their further expansion in large-scale energy storage systems. Herein, we propose a novel approach to realize self-extinguishing capability of LIBs for effective safety improvement by integrating temperature-responsive microcapsules containing a fire-extinguishing agent. The microcapsules are designed to release an extinguisher agent upon increased internal temperature of an LIB, resulting in rapid heat absorption through an in situ endothermic reaction and suppression of further temperature rise and undesirable thermal runaway. In a standard nail penetration test, the temperature rise is reduced by 74% without compromising electrochemical performances. It is anticipated that on the strengths of excellent scalability, simplicity, and cost-effectiveness, this novel strategy can be extensively applied to various high energy-density devices to ensure human safety.
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Taeeun
authors.initials: T
authors.lastname: Yim
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Min-Sik
authors.initials: MS
authors.lastname: Park
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Sang-Gil
authors.initials: SG
authors.lastname: Woo
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Hyuk-Kwon
authors.initials: HK
authors.lastname: Kwon
authors.affiliation: ‡Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 302-701, Republic of Korea.
authors.forename: Jung-Keun
authors.initials: JK
authors.lastname: Yoo
authors.affiliation: ‡Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 302-701, Republic of Korea.
authors.forename: Yeon Sik
authors.initials: YS
authors.lastname: Jung
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Ki Jae
authors.initials: KJ
authors.lastname: Kim
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Ji-Sang
authors.initials: JS
authors.lastname: Yu
authors.affiliation: †Advanced Batteries Research Center, Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Seongnam, Gyeonggi-do 463-816, Republic of Korea.
authors.forename: Young-Jun
authors.initials: YJ
authors.lastname: Kim
keywords: Lithium ion battery; fire-extinguishing; microcapsules; safety