Lei Hai, Zeng Zihao, Zhu Chao, Wen Yunpeng, Li Jiexiang, Yang Yue, Ge Peng
School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.
ChemSusChem. 2025 Jul 1;18(13):e202500597. doi: 10.1002/cssc.202500597. Epub 2025 Apr 22.
The continuous accumulation of spent lithium-ion batteries (LIBs) has brought about critical economic and environmental issues. The article discusses the direct recycling of spent LIBs through defect engineering, emerging as a sustainable strategy for upcycling. Degraded materials, including cathodes and anodes, exhibit structural defects that can be repurposed for modifying, enhancing the performance of regenerated batteries. The studies show that utilizing lithium vacancies and oxygen vacancies allows the efficient diffusion of dopants, like Mg/Al and F, improving electrochemical stability and high-voltage capabilities. Additionally, this approach significantly reduces greenhouse gas emissions compared to traditional methods, offering significant insights for large-scale LIBs upcycling and closed-loop energy storage systems.
废旧锂离子电池（LIBs）的持续积累带来了严峻的经济和环境问题。本文讨论了通过缺陷工程对废旧LIBs进行直接回收，这一方法正成为一种可持续的升级回收策略。包括阴极和阳极在内的降解材料表现出结构缺陷，这些缺陷可用于改性再生电池，提高其性能。研究表明，利用锂空位和氧空位可使Mg/Al和F等掺杂剂有效扩散，从而提高电化学稳定性和高电压性能。此外，与传统方法相比，这种方法显著减少了温室气体排放，为大规模LIBs升级回收和闭环储能系统提供了重要见解。
