전환반응 기반 전이금속산화물 리튬이온전지 음극 활물질 개발 동향과 전망

• 영문명: Conversion reaction-based transition metal oxides as anode materials for lithium ion batteries: recent progress and future prospects
• 발행기관: 한국세라믹학회
• 간행물 정보: 『세라미스트』제25권 제2호, 218~246쪽, 전체 29쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2022.06.30

영문 초록

The rapid increase in demand for high-performance lithium ion batteries (LIBs) has prompted the development of high capacity anode materials that can replace/complement the commercial graphite. Transition metal oxides (TMOs) have attracted great attention as high capacity anode materials because they can store multiple lithium ions (electrons) per unit formula via conversion reaction, resulting in high specific capacity (700-1,200 mAh g⁻¹) and volumetric capacity (4,000-5,500 mAh cm⁻³). In addition, TMOs are cheap, earth-abundant, non-toxic and environmentally friendly. However, there have been no reports of practical LIBs using conversion-based TMO anodes, because of several major problems such as large voltage hysteresis, low initial Coulombic efficiency (large initial capacity loss), low electrical conductivity, and large volume changes (100~200%). This review summarizes the recent progress, challenges and opportunities for TMO anode materials. The conversion reaction mechanism, problems and solutions of TMO anode materials are discussed. Considering iron oxide as a promising candidate, future research directions and prospects for the practical use of TMO for LIB are presented.

목차

1. 서론

2. 전환반응의 메커니즘

3. 전이금속산화물 음극 활물질의 문제점

4. 전이금속산화물 음극 활물질 문제 해결 전략

5. 전환반응 음극 상용화 주안점

6. 결론

Acknowledgement

REFERENCES

키워드

lithium-ion batteries conversion reaction anode materials transition metal oxides