콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Polydopamine-treated three-dimensional carbon fiber-coated separator for achieving high-performance lithium metal batteries
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-08
- 저자명 오정훈,조하린,이홍경,김희탁,이용민,유명현
- 학술지명 Journal of Power Sources
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.jpowsour.2019.05.003
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
The development of safe and high-performance lithium (Li) metal anodes has been a challenging issue that has not been addressed for decades. In this study, we have developed a thermally stable polydopamine-treated three-dimensional (3D) carbon fiber-coated separator (P3D-CFS) using an economical and environment-friendly process. P3D-CFS has a conductive coating layer that is used as a 3D hosting structure, which does not cause morphological changes in the Li metal anode. As a result, the unit cells (LiMn/Li metal) employing P3D-CFS improve the cycle performance and rate capability compared to commercial polyethylene (PE) separators. P3D-CFS maintained 83.1% of the initial discharge capacity at the 400th cycle, whereas bare PE maintains only 74.3% of the initial discharge capacity after the 250th cycle (C/2 = 0.5 mA cm/graphite) that employed P3D-CFS is maintained for over 60 min at 140 °C, whereas the unit cells that employed bare PE show a sudden voltage drop after only 3 min.
