콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Improving the Cycling Performance of Lithium-Ion Battery Si/Graphite Anodes Using a Soluble Polyimide Binder
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2017-11
- 저자명 Jeonghun Oh, Dahee Jin, Kyuman Kim, Danoh Song, 유명현, 이용민
- 학술지명 Acs Omega
- 발행처명 American Chemical Society
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
- 논문 다운로드 링크(외부) https://doi.org/10.1021/acsomega.7b01365
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
Herein, we improved the performance of Si/graphite (Si/C) composite anodes by introducing a highly adhesive co-polyimide (P84) binder and investigated the relationship between their electrochemical and adhesion properties using the 90° peel test and a surface and interfacial cutting analysis system. Compared to those of conventional poly(vinylidene fluoride) (PVdF)-based electrodes, the cycling performance and rate capability of P84-based Si/C anodes were improved by 47.0% (372 vs 547 mAh g–1 after 100 cycles at a 60 mA g–1 discharge condition) and 33.4% (359 vs 479 mAh g–1 after 70 cycles at a 3.0 A g–1 discharge condition), respectively. Importantly, the P84-based electrodes exhibited less pronounced morphological changes and a smaller total cell resistance after cycling than the PVdF-based ones, also showing better interlayer adhesion (Fmid) and interfacial adhesion to Cu current collectors (Finter).
