Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Comprehensive Review on Wet Recycling methods for LiFePO4 Batteries

LiFePO4 배터리의 습식 재활용 방법에 대한 최근 연구 동향 고찰

  • Dae-Weon Kim (Advanced Materials and Processing Center, Institute for Advanced Engineering (IAE)) ;
  • Hee-Seon Kim (Advanced Materials and Processing Center, Institute for Advanced Engineering (IAE)) ;
  • Hee-Lack Choi (Department of Material Science & Engineering, Pukyong National University)
  • 김대원 (고등기술연구원 신소재공정센터) ;
  • 김희선 (고등기술연구원 신소재공정센터) ;
  • 최희락 (부경대학교 재료공학과)
  • Received : 2024.09.06
  • Accepted : 2024.10.14
  • Published : 2024.10.31
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Abstract

This paper provides a comprehensive review of the latest research trends in wet processing methods for recycling LiFePO4 batteries. In particular, it analyzes various chemical leaching methods for the selective recovery of lithium from these batteries, evaluating their efficiency. The study covers lithium recovery techniques using strong and weak acids, leaching processes utilizing strong oxidants, and lithium recovery through isomorphic substitution reactions involving salts. Additionally, this research explores optimal leaching conditions to maximize lithium recovery, discusses various chemical reactions for the selective recovery of lithium, iron, and phosphorus, and offers insights into their potential. Ultimately, the paper aims to serve as a valuable reference for the advancement and practical application of LiFePO4 battery recycling technologies.

본 논문에서는 LiFePO4 배터리의 재활용을 위한 습식 공정에 관한 최신 연구 동향에 대하여 종합적으로 고찰하였다. 특히, LiFePO4 배터리에서 리튬을 선택적으로 회수하는 다양한 화학적 침출 방법과 그 효율을 분석하였으며, 강산과 약산을 이용한 리튬 회수 기술, 강산화제를 활용한 침출 공정, 그리고 염을 이용한 동형 치환 반응을 통한 리튬 회수 기술 등을 다루고 있으며, 각 방법의 장단점과 최적의 조건을 제시하였다. 또한, 본 연구는 리튬 회수율을 극대화하기 위해 최적의 침출 조건을 탐구하고, 다양한 화학적 반응식을 제시하여 리튬, 철, 인 등의 선택적 회수 가능성에 대하여 논의하였으며, 최종적으로 LiFePO4 배터리 재활용 기술의 발전과 실용화에 기여할 중요한 참고 자료로서 활용되었으면 한다.

Keywords

Acknowledgement

This work was supported by a Research Grant of Pukyong National University(2023 year).

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