湿法冶金2025，Vol.44Issue(4)：476-481,6.DOI:10.13355/j.cnki.sfyj.2025.04.006
三元深共熔溶剂对废旧磷酸铁锂电池的浸出机制研究
Leaching Mechanism of Spent Lithium Iron Phosphate Batteries Using Ternary Deep Eutectic Solvent
摘要
Abstract
Iron and lithium were recovered from the cathode material of spent lithium iron phosphate battery using choline chloride,ascorbic acid,and ethylene glycol as a ternary deep eutectic solvent.The effects of the molar ratio of choline chloride/ascorbic acid/ethylene glycol,liquid volume to solid mass ratio,reaction temperature and time on the leaching rate of iron and lithium were investigated.The leaching mechanism was discussed through kinetic analysis and SEM characterization.The results show that under the optimal leaching conditions of choline chloride/ascorbic acid/ethylene glycol molar ratio of 1∶1∶3,liquid volume to solid mass ratio of 0.1 mL/1 mg,reaction temperature of 80 ℃ and reaction time of 1 h,the leaching rates of lithium and iron can reach 96％and 98％,respectively.The leaching process is mainly controlled by chemical reactions.The method is efficient and environmentally friendly,and can recover iron and lithium from spent lithium iron phosphate batteries.关键词
三元深共熔溶剂/废旧磷酸铁锂电池/浸出/铁/锂Key words
ternary deep eutectic solvent/spent lithium iron phosphate batteries/leaching/iron/lithium分类
矿业与冶金引用本文复制引用
杨鹏飞,吴家仲,蓝峻峰,叶有明,谢雪珍,陈燕萌..三元深共熔溶剂对废旧磷酸铁锂电池的浸出机制研究[J].湿法冶金,2025,44(4):476-481,6.基金项目
广西科技计划项目(桂科 AB22035053,桂科 AD20297139) （桂科 AB22035053,桂科 AD20297139）
广西科技师范学院科研基金项目(GXKS2023ZDB009,GXKS2024QNTD13) （GXKS2023ZDB009,GXKS2024QNTD13）
广西重点研发计划项目(桂科 AB24010240) （桂科 AB24010240）
广西科技师范学院创新训练计划项目(X2024175) （X2024175）
广西高校中青年教师科研基础能力提升项目(2025KY0904) （2025KY0904）
大学生创新创业训练计划项目(S202311546128,X2023222). （S202311546128,X2023222）
