리튬 이차전지용 단결정 고 Ni계 양극재 및 PTFE 표면 폴리머 코팅에 대한 연구

• 영문명: Single Crystalline High Nickel Cathode Material with PTFE Polymer Coating Layers for Enhanced Li-ion Batteries
• 발행기관: 한국세라믹학회
• 저자명: 이수홍(Soo Hong Lee) 홍승현(John Hong)
• 간행물 정보: 『세라미스트』제28권 제3호, 528~536쪽, 전체 9쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2025.09.30

국문 초록

Single-crystalline high Ni-rich cathode (LiNi0.8Co0.1Mn0.1O2, SC NCM80) materials suffer from increased interfacial resistance due to surface-related side reactions during charge-discharge process, leading to performance degradation. To address this issue, this study employed a milling method to partially coat the SC NCM80 surface with a polytetrafluoroethylene polymer (F-SC NCM80). This process effectively reduces the interfacial resistance between the electrode and the organic electrolyte while enhancing surface stability. As a result, the high chemical stability of the polymer coating improved the overall electrode surface stability, ensuring long-term electrochemical performance. In electrochemical testing, F-SC NCM80 electrodes maintained a high capacity retention of 158.6 mAh/g even after 200 cycles. This study presents a practical surface modification strategy for NCM cathodes and demonstrates the potential of an innovative polymer-based electrode coating process for the development of high-energy-density cathode materials.

목차

1. 서론

2. 실험방법

3. 실험결과

4. 결론

ACKNOWLEDGEMENTS

REFERENCES

키워드

Li ion battery Ni-rich cathode PTFE (Polytetrafluoroethylene) coating Single crystalline