콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Ultra-Thin Nitrate-Preplanted Li Powder Composite for Lithium Metal Secondary Battery
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-10
- 저자명 진다희,노영준,유명현,이홍경,이용민
- 학술지명 ECS Meeting Abstracts
- 발행처명 IOP Publishing
- 발행국가 해외
- 논문언어 외국어
- 논문 다운로드 링크(외부) https://iopscience.iop.org/article/10.1149/MA2021-02581688mtgabs/meta
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
Due to the high theoretical energy density and lowest negative potential, Li metal is being revalued as a candidate for large-scale battery systems, such as electric vehicles (EVs) and energy storage systems (ESSs). Nevertheless, the Li metal suffer from several issues that the formation of dendrite and continuous side reactions during repeated cycling. In our previous contribution, we tackled this problem by using Li powder (LMP), because the simple manufacturing using slurry coating, flexible cell design, reduced exchanged current density. However, the LMP-based electrode also has severe morphological drawback, which induced the imperfect Li2CO3 passivation layer. During the long-term cycling, the spherical shape can be completely lost due to extensive Li loss at individual LMPs, leading to a failure of the conformal Li distribution. Herein, we report a pre-planted nitrate LMP composite electrode (LN-LMP). The LiNO3 additives play important roles not only allowed chemically induced homogeneous nitration on surfaces but also released toward electrolytes as additives. Therefore, due to the significant features of the LN‐LMP composite design, LMBs with 20 µm‐thick LN‐LMP composite anodes demonstrated excellent cycling performances compared to cells with conventional LMPs and LiNO3‐containing electrolytes. Furthermore, we further verified that the LN‐LMP electrode with compatible electrolytes consistently exhibits better performances under practical cell design conditions.
