콘텐츠 본문
논문 해외 국제전문학술지(SCI급) N-(triphenylphosphoranylidene) aniline as a novel electrolyte additive for high voltage LiCoO2 operations in lithium ion batteries
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2011-05
- 저자명 Je-Nam Lee, Gi-Beom Han, Myung-Hyun Ryou, Dong Jin Lee, Jongchan Song, Jang Wook Choi, Jung-Ki Park
- 학술지명 Electrochimica Acta
- 발행처명 Pergamon
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.electacta.2011.03.041
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
We report N-(triphenylphosphoranylidene) aniline (TPPA) as a new electrolyte additive for high performance lithium cobalt oxide (LiCoO2) electrodes during high voltage operations. When cycled in the voltage range of 3.0–4.4 V, graphite-LiCoO2 full cells with 0.2 wt% TPPA exhibited 10% increased discharge capacities after 200 cycles compared to those of control cells with no such additive. The enhanced cycling performance is attributed to the additive effect toward the modified surface films on LiCoO2 electrodes that suppress the decomposition of both solvent and salt in the electrolyte. This additive effect was characterized by electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS).
