콘텐츠 본문
논문 해외 국제전문학술지(SCI급) High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-09
- 저자명 유명현,윤별희,박진규,이진홍,김석우,Xiaodi Ren,김희탁,이홍경,이용민
- 학술지명 ACS APPLIED MATERIALS INTERFACES
- 발행처명 AMER CHEMICAL SOC
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 9
- 논문 다운로드 링크(외부) https://doi.org/10.1021/acsami.9b05492
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Limetal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density (similar to 3 mA cm(-2)). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the LillLiMn(2)O(4) battery attaining over 1000 cycles, which is twice as long at the same capacity retention (80%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm(-2)).
