| 학회 | 한국공업화학회 |
| 학술대회 | 2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 | 25권 2호 |
| 발표분야 | 포스터-에너지저장·변환 |
| 제목 | Enhancing Li+ ion-conductivity in solid composite electrolyte with CeO2 filler |
| 초록 | Solid composite electrolyte (SCE) composed of polymer electrolyte and ceramic fillers is considered a promising electrolyte for all-solid-state batteries owing to good interfacial contact, flexibility, and enhanced ionic conductivity than solid polymer electrolyte. However, although the SCE has improved ionic conductivity than solid polymer electrolytes, its value is still insufficient. In this work, we designed CeO2 as filler material for the SCEs. CeO2 has high oxygen vacancy concentration and excellent chemical stability. Oxygen vacancy at the filler surface act as lewis acid and interact with Li-salt in polymer electrolyte. This interaction promotes salt dissociation and leads to ionic conductivity enhancement in SCE. The high oxygen vacancy concentration at CeO2 facilitated Li-salt dissociation easier in polymer electrolyte and improved the ionic conductivity of SCE. |
| 저자 | 이종준1, 김도환1, 진다희1, 이강택2, 이용민1 |
| 소속 | 1DGIST, 2KAIST |
| 키워드 | Solid state battery; Composite electrolyte; ceramic filler |
