Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Surface Modification Technology and Research Trends of Separators for Lithium-Ion Batteries

리튬이온 전지용 분리막의 표면 개질 기술 및 연구 동향

  • Ha, Seongmin (Department of Applied Chemistry and Chemical Engineering, Chungnam National University) ;
  • Kim, Daesup (Department of Applied Chemistry and Chemical Engineering, Chungnam National University) ;
  • Kwak, Cheol Hwan (Institute of Carbon Fusion Technology (InCFT), Chungnam National University) ;
  • Lee, Young-Seak (Department of Applied Chemistry and Chemical Engineering, Chungnam National University)
  • 하성민 (충남대학교 응용화학공학과) ;
  • 김대섭 (충남대학교 응용화학공학과) ;
  • 곽철환 (충남대학교 탄소융복합기술연구소) ;
  • 이영석 (충남대학교 응용화학공학과)
  • Received : 2022.06.11
  • Accepted : 2022.07.27
  • Published : 2022.08.10
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Abstract

Lithium-ion batteries (LIBs) are considered promising energy storage devices with good performance such as high energy density, slow self-discharge rate, high rate charge capacity, and long battery life. However, the application of these LIBs in the high-energy density electric vehicle and large device industries poses a major safety problem. In order to solve this problem, developing a material having high thermal stability and intrinsic safety is the ultimate solution for improving the stability and electrochemical performance of LIBs. This review introduced a surface modification technology of a separator to overcome the stability problem of a commercial separator, and summarized and summarized the research trends using the modified separator for a lithium-ion battery. Based on this, the future prospects for the separator development by surface modification were discussed.

리튬이온 전지(lithium-ion batteries, LIBs)는 높은 에너지 밀도, 느린 자가방전율, 고율 충전 능력 및 긴 배터리 수명 등의 좋은 성능으로 촉망받는 에너지 저장 장치로 꼽힌다. 그러나 고에너지 밀도의 전기자동차 및 대형 디바이스 산업에서 이러한 LIBs의 적용은 큰 안전 문제를 일으키고 있다. 이러한 문제를 해결하기 위하여 열적 안정성 및 내재적 안전성이 높은 재료를 개발하는 것이 LIBs의 안정성 및 전기화학적 성능을 향상시키는 궁극적인 해결방법이다. 본 총설에서는 상용 분리막의 안정성 문제 극복을 위한 분리막의 표면 개질 기술을 소개하였으며 이를 이용하여 개질된 리튬이온 전지용 분리막을 활용한 연구 동향을 요약, 정리하였다. 또한 이를 기반으로 표면 개질에 따른 분리막에 대한 향후 전망을 논의하였다.

Keywords

Acknowledgement

이 연구는 산업통상자원부의 2022년 "바인더 및 코팅용 피치를 활용한 실리콘산화물/인조흑연 복합체 개발" 지원 사업으로 수행되었으며, 이에 감사드립니다.

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