콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Bikitaite composite polymer electrolyte for high-performance solid-state lithium metal battery
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023-08
- 저자명 Vera Afumaa Afrifah, Jeongtae Kim, Isheunesu Phiri, Sun-Yul Ryou
- 학술지명 Journal of Industrial and Engineering Chemistry
- 발행처명 ELSEVIER
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
- 논문 다운로드 링크(외부) https://www.sciencedirect.com/science/article/pii/S1226086X23005038
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
Ceramic-polymer hybrids promise to form composite electrolytes with high ionic conductivity, good stability, and electrode compatibility that conventional ceramic or polymer electrolytes cannot achieve. Using ceramic fillers in polymer electrolytes frequently results in significantly improved ion conduction. This study employs a representative composite electrolyte based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP), Li zeolite Li2(Al2Si4O12) (bikitaite, BKT) ceramics, and an ether-based dual salt containing Li nitrate (EDSN) electrolyte as a plasticizer. The resulting composite electrolyte composed of PVdF, EDSN, and BKT has a superior ionic conductivity of 1.03 × 10–3 S cm−1, a broader electrochemical window of 4.8 V, and a high Li transference number of 0.61. The assembled solid-state LiFePO4/Li metal battery demonstrates a long lifespan, with an outstanding capacity retention of 86% after 450 cycles at 0.3C. The developed electrolyte with long cycling stability may serve as a model for developing solid electrolytes for Li metal secondary battery applications.
