Co-free 하이니켈 층상계 산화물 리튬 이차전지 양극재의 열화기작 연구의 최근 동향과 X선 기반 고도분석 기술의 활용

• 영문명: Elucidating degradation mechanisms of Co-free high-Ni layered oxide cathodes for Li-ion batteries via advanced X-ray-based characterization methods
• 발행기관: 한국세라믹학회
• 저자명: 현혜정 임종우
• 간행물 정보: 『세라미스트』제26권 제1호, 138~157쪽, 전체 20쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2023.03.30

영문 초록

High-Ni layered oxide cathodes without Co are being investigated as potential cathode materials for Liion batteries with high energy density. By decreasing the Co content, these cathodes not only boost energy density but also alleviate concerns about the supply instability and fluctuating cost of Co raw materials. However, the elevated Ni content in the layered oxides causes distinct chemo-mechanical degradation mechanisms that inhibit their commercial application. In order to gain insight into the degradation process at various scales, from the atomic to the particle and the electrode levels, and to devise ways to prevent degradation, multi-scale characterization methods are essential. In this review, we critically evaluate the role of Co substitution in high-Ni layered oxides and the impact of Co content on the chemo-mechanical degradation process. Furthermore, the use of advanced X-ray-based characterization methods, which have helped shed light on the degradation mechanisms of high-Ni cathodes, is also discussed.

목차

1. 서론

2. Co-free 하이니켈 양극재의 특성과 열화 메커니즘

3. 열화 기작 규명을 위한 고도분석의 원리와 활용

4. 결론

REFERENCES

키워드

Co-free high-Ni cathode Degradation mechanisms Li-ion battery