전고체전지 고체전해질 PEO의 리튬이온전도에 미치는 CeO₂의 첨가 효과

• 영문명: The effect of adding CeO on the lithium-ion conductivity of PEO solid electrolytes in all solid-state batteries
• 발행기관: 한국세라믹학회
• 저자명: 서준(Jun Seo) 서한길(Han Gil Seo) 박유세(Yoo Sei Park) 문태호(Taeho Moon) 이재원(Jae-Won Lee) 박희정(Hee Jung Park)
• 간행물 정보: 『세라미스트』제27권 제4호, 371~378쪽, 전체 8쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2024.12.31

국문 초록

Polyethylene oxide (PEO) is used as a solid electrolyte in lithium solid-state batteries. Recently, research has been actively conducted to control lithium-ion conductivity by adding ceramic fillers. In this study, unlike previous research, ultra-nano-sized ceria (CeO₂) was used as a ceramic filler, added in the range of 0 to 20 wt%. The sample resistance was analyzed using the 2-probe AC impedance method. The highest ionic conductivity was observed when 7.5 wt% of CeO₂ was added to the PEO, attributed to the increased amorphous region within the PEO. A Li|solid electrolyte|Li symmetric cell was fabricated using the 7.5 wt% added solid electrolyte. It exhibited low cell overpotential at room temperature and demonstrated stable cycling characteristics for over 300 hours.

목차

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2. 실험방법

3. 결과 및 논의

4. 결론

CONFLICTS OF INTEREST

ACKNOWLEDGEMENTS

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키워드

CeO₂ Composite solid electrolyte Ionic conductivity Nanostructure Polyethylene oxide