从废弃的LiNixCoyMn1-x-yO2阴极中选择性回收,通过构建一个协同的水环境
Jianzhi Zhang1, Yuan Ding1, Hui Shi1
1Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
Journal of environmental management
|January 6, 2024
概括
这项研究介绍了一种使用和酸的绿色工艺,可以从已耗尽的离子电池中选择性地回收96.81%的. 该方法可回收酸并以最小的废物产生电池级碳酸.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 对的日益增长的需求需要从使用终止的离子电池 (LIB) 中采用可持续的回收方法.
- 现有的回收过程往往涉及强化学品或多个复杂的步骤,导致环境问题和效率降低.
- 选择性回收,同时最大限度地减少过渡金属漏,对于经济可行性和环境安全至关重要.
研究的目的:
- 开发一种绿色和有选择的回收过程,从耗尽的LIB阴极中回收.
- 研究和过渡金属在酸-酸系统中的协同漏行为.
- 为了优化反应条件,使高回收和有效地从过渡金属中分离出来.
主要方法:
- 使用协同的酸-酸 (FA-AA) 系统从已耗尽的LIB阴极中出.
- 采用了包括X射线光电子光谱 (XPS),扫描电子显微镜 (SEM) 和富里埃变换红外光谱 (FTIR) 在内的特征化技术来阐明机制.
- 实施酸性蒸用于回收和烤/洗,以转化为碳酸.
主要成果:
- 从已使用的LIB阴极中获得96.81%的的选择性回收.
- 通过乙酸和释放后/沉来抑制的浸出.
- 通过蒸成功回收了90.50%的酸,并获得了电池级碳酸盐,回收率为91.62%.
- 该过程消除了对额外化学品的需求,避免了沉降步骤,不产生废液,并提供了潜在的利能力.
结论:
- FA-AA协同系统提供了一种高效,绿色和选择性的方法,用于从已耗尽的LIB中回收.
- 这种新的方法为电池行业的废物管理提供了一个可持续的解决方案.
- 该过程突出了电池回收利用的经济和环境效益的潜力,通过优化化学漏和资源回收.
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