콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Composite protection layers for dendrite-suppressing non-granular micro-patterned lithium metal anodes
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2018-08
- 저자명 Seokwoo Kim, Jinkyu Park, Alex Friesen, Hoogil Lee, 유명현, 이용민
- 학술지명 Electrochimica Acta
- 발행처명 Pergamon
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.electacta.2018.05.102
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
One possible way to increase the energy density of Li secondary batteries is to replace the commercialized carbonaceous anodes (such as graphite ones) with Li anodes due to their extremely high theoretical specific capacities, low densities, and lowest negative values of electrochemical potential. Despite these advantages of Li metal anodes, the uncontrolled deposition of dendritic, mossy, and granular Li particles decreases the Coulombic efficiency of Li batteries and causes various safety issues, which limits their scope of practical applications. To solve this problem, a surface-patterned Li metal anode covered with an alumina-based composite protection layer is developed in this work. Subsequently, the composite protection layer composition is optimized, and the electrochemical properties of the resulting micro-patterned Li metal anode are investigated. Due to the existence of a synergistic effect between the surface-patterned Li metal anode and the composite protection layer coating, the deposition of Li ions is effectively controlled, which prevents the formation of dendritic, granular, and moss-like Li particles after multiple deposition cycles even at relatively high current densities (up to 2.4 mA cm−2).
