콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Co-polyimide-coated polyethylene separators for enhanced thermal stability of lithium ion batteries
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2012-12
- 저자명 Jongchan Song, Myung-Hyun Ryou, Bongki Son, Je-Nam Lee, Dong Jin Lee, Yong Min Lee, Jang Wook Choi, Jung-Ki Park
- 학술지명 Electrochimica Acta
- 발행처명 Pergamon
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.electacta.2012.06.078
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
The thermal shrinkage of the widely adopted polyethylene (PE) separators has become a very critical issue for safety in lithium ion batteries, especially for electrical vehicle applications. As an effort to minimize the thermal shrinkage of PE separators, in this study, we coat PE separators with a substance from the polyimide family by engaging a simple dipping method. A polymer coating at the optimal concentration endows PE separators with improved mechanical strength and thus remarkably increased resistance against thermal shrinkage at elevated temperatures. Despite the coating layers, the cells with the polyimide-coated separators exhibit almost identical electrochemical properties to those of the cells with the bare PE separators, thus proving that the polymer coating does not affect the battery performance. The preserved electrochemical properties can be explained by morphology and porosity characterization.
