화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO))
권호 25권 2호
발표분야 포스터-에너지저장·변환
제목 Enabling a quasi solid-solid direct conversion reaction by modifying the interfaces of cathode for advanced Lithium-Sulfur batteries
초록 Here, we report a new approach to enhance the cycle performance of lithium-sulfur batteries (LSB) by designing cathode's surface and solvation structure. This work achieved a single potential plateau under fast charge and discharge cycle test by developing a hierarchical structure of carbon-sulfur composites and modifying optimal solvation structure of electrolytes. The modification of cathode interfaces lead to the quasi-solid state conversion reaction different from a conventional reaction pathway, producing soluble lithium polysulfides. The designed electrified interface maximized electrochemical charge-discharge reversibility by suppressing the irreversible electrochemical reaction.
저자 김진원, 봉성율, 이채형, 이재영
소속 광주과학기술원
키워드 A quasi solid-solid direct conversion reaction; Interfaces; Lithium-sulfur batteries
E-Mail jaeyoung@gist.ac.kr