리튬 이차 전지 단입자 양극재의 합성법 및 연구 동향

• 영문명: Recent Progress and Synthetic Methods for Single-crystalline Cathode in Lithium-ion Batteries
• 발행기관: 한국세라믹학회
• 저자명: 김태완(Taewan Kim) 강병구(Byeonggu Kang) 전민기(Mingi Jeon) 채수종(Sujong Chae)
• 간행물 정보: 『세라미스트』제27권 제1호, 41~60쪽, 전체 20쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2024.03.30

영문 초록

Ni-rich layered transition metal oxides have been regarded as the most feasible way for achieving high energy density of lithium-ion batteries. Conventional Ni-rich cathodes are composed of spherical secondary particles, consisting of numerous primary particles. Unfortunately, the grain boundaries in the polycrystalline structure are vulnerable to the pulverization, leading to microcracks during cycling. The newly exposed surface from the microcrack can induce undesirable side reactions with the electrolyte, which severely deteriorates the battery performance. On the other hand, single-crystalline Ni-rich cathodes have gained significant attention for industrial applications due to their robust mechanical strength, resulting from the elimination of grain boundaries. The improved mechanical properties of single-crystalline cathodes effectively mitigate the interfacial side reactions, thereby attaining superior structural, thermal, and electrochemical performance. Herein, we have introduced various synthetic methods of the single-crystalline cathode, encompassing not only high-temperature sintering and the molten-salt method for the Ni-rich cathode but also the other strategies for different single-crystalline cathode materials. This review aims to provide a comprehensive understanding of single-crystalline cathode synthesis, with implications for the development of high-performance cathode materials.

목차

1. 서론

2. 리튬이온 전지용 단입자의 합성 기술

3. 결론

ACKNOWLEDGEMENTS

REFERENCES

키워드

High-temperature Li-ion battery Molten-salt Ni-rich Single-crystalline cathode