콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Large-area surface-patterned Li metal anodes fabricated using large, flexible patterning stamps for Li metal secondary batteries
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-12
- 저자명 배현수, Isheunesu Phiri, Hong Suk Kang, 이용민, 유명현
- 학술지명 Journal of Power Sources
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.jpowsour.2021.230553
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
The use of surface-patterned lithium (Li) metal has been proposed as a promising strategy for inhibiting the formation of Li dendrites during repeated Li plating/stripping processes. Nevertheless, the conventional Li metal patterning process is complex, expensive, incompatible with mass production, and incapable of producing finely controlled patterns on the Li metal surface. A large, flexible patterning stamp capable of large-area patterns is developed using a silicon (Si) wafer-based chemical etching process, and its effect on the electrochemical performance of a Li metal anode is investigated. The newly developed stamps have 5,000% larger patterning area compared to the conventional stainless-steel stamps. Furthermore, when compared to conventional surface-patterned Li metal fabricated with conventional stainless-steel stamps (SP-LM), the surface-patterned Li metal fabricated with large and flexible patterning stamps (LAP-LM) demonstrates improved electrochemical performance and stable morphological properties. As a result, the LAP-LM is able to retain up to 85.2% of its initial discharge capacity (85.9 mAh g−1) after 200 cycles at 3C (3.96 mA cm−2), while the SP-LM shows a severe capacity decay after 150 cycles (94.0 mAh g−1 and 13.0 mAh g−1 at the 150th cycle and 200th cycle, respectively).
