从使用过的离子电池阴极中选择性提取关键金属:阴离子-离子协调和抗溶剂结晶
Yanqiu Lyu1, Jodie A Yuwono1, Yameng Fan2
1School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
Advanced materials (Deerfield Beach, Fla.)
|March 3, 2024
概括
离子电池 (LIB) 的可持续回收至关重要. 这项研究使用深度环氧溶剂 (DES) 来通过调整协调结构从已耗尽的LIB中选择性地回收和等关键金属.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 水电金术是指用水电金术进行金术.
背景情况:
- 对电动汽车 (EV) 的需求不断增长,需要可持续的离子电池 (LIB) 循环利用.
- 深度环氧溶剂 (DES) 为低成本的LIB回收提供了一个有希望的,环保的方法.
- 选择性地分离过渡金属 (Ni,Mn,Co) 和存在挑战,因为它们具有相似的特性.
研究的目的:
- 调查DES和过渡金属/在漏过程中的协调机制.
- 开发一种选择性金属回收工艺,用于废弃的LIB阴极.
- 为了实现从LIB废物中有效回收关键金属.
主要方法:
- 使用具有变异离子的DES从已耗尽的LIB阴极 (NCM111和LCO) 中出金属.
- 在抗溶剂 (乙) 中利用金属-DES协调结构的可溶性差异.
- 设计一个含有乙和DES回收的洗和分离系统.
主要成果:
- 对过渡金属和具有不同DES离子的独特稳定协调结构进行了鉴定.
- 从NCM111阴极材料中获得过渡金属和Li的高选择性回收.
- 从LCO阴极中显著选择性回收Co和Li,使用乙和DES重复使用.
结论:
- 在DES中调整阴离子协调结构是选择性金属炼的关键.
- 抗溶剂结晶提供了一种切实可行的方法,用于将贵金属从消耗的LIBs中分离出来.
- 这种方法支持电池回收的可持续资源管理.
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