绿色和高效的回收方法用于消耗的Ni-Co-Mn电池,使用多功能深度环氧溶剂
Yi Luo1, Ying Deng1, Huiying Shi1
1School of Minerals Processing and Bioengineering, Central South University, China.
Journal of environmental management
|December 16, 2023
概括
这项研究引入了一种绿色的深溶解溶剂 (DES),用于高效的离子电池回收利用. 新型DES有效地回收了,,和等关键金属,提供了一个可持续的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 电化学 电化学 电化学
背景情况:
- 废弃的离子电池 (LIB) 的数量越来越多,这给环境带来了重大挑战.
- 从消耗的LIB中回收贵金属的高效和环保方法至关重要.
- 传统的溶剂工艺往往涉及苛刻的化学品,并且是不可持续的.
研究的目的:
- 开发和评估一种新型的,多功能深溶解剂 (DES) 来有效地从废弃LIB中出过渡金属.
- 用自然分子研究金属离子提取的机制.
- 为LIB回收提供可持续和环保的替代品.
主要方法:
- 使用了一种由二甲基-β-propiothetin (DMPT) 和乙烯基醇 (EG) 组成的深度环氧化溶剂 (DES).
- 运用密度函数理论 (DFT) 计算来探索DES微观结构和金属离子相互作用.
- 进行了漏实验,以确定金属回收的效率.
主要成果:
- 通过使用DMPT-EG DES,实现了Li (99.59%),Ni (99.28%),Co (99.04%) 和Mn (99.45%) 的高浸出率.
- DFT计算揭示了DES中的活性位点及其与金属离子 (Mn > Co > Ni) 的结合亲和力.
- 该过程避免了挥发性酸,证明了对金属提取的更绿色方法.
结论:
- 开发的多功能DES提供了一种高效和可持续的方法,用于从消耗的LIB中回收贵金属.
- 这种绿色溶剂系统为传统的,危险的电池回收方法提供了一个有希望的替代方案.
- 该研究强调了自然分子在设计有效的DES用于重金属回收方面的潜力.
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