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选择性通过热解 (碳热热处理) 和受控的液从消耗的NMC黑质中进行预水

Amir Hossein Mohammad Zadeh¹, Spencer Cunnigham¹, Devon Gray²

¹Laboratory for Strategic Materials, Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada.

Waste management (New York, N.Y.)

|January 7, 2026

概括

一种新的热解漏方法有效地从电池废物中回收,而无需添加减电剂. 这种简化过程提高了的回收,减少了对环境的影响,使电池回收更可持续.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

对离子电池的需求不断增长,需要有效回收使用的正极材料.
目前的回收方法往往缺乏回收的选择性和经济可行性.

研究的目的:

开发和机械评估一种简化,无减热剂的热解出路径,用于从NMC类型的黑质中选择性地提取.
与现有的文献路线相比,评估拟议方法的经济和环境优势.

主要方法:

在气下550-630°C的NMC黑质的碳热减少 (热解),利用固有的碳含量.
使用XRD,拉曼光谱,SEM-EDX,ToF-SIMS和TC/TOC进行全面的材料表征.
在接近中性的pH值下进行漂水实验,以确定回收和过渡金属溶解.

主要成果:

热解诱导的相变,形成水溶性Li2CO3/Li2O并稳定过渡金属 (Ni,Co,Mn).
的回收率从未处理的黑质量的21%增加到在近中性pH下化材料的63%左右.
选择性溶解实现了Ni,Co和Mn<1-6%的溶解,最大限度地降低了杂质负载.

结论:

无减少剂的烧解-出路径提供了一种高度选择性和高效的方法,用于从NMC电池废物中提取.
这种低温,低反应剂的工艺具有显著的技术经济优势,包括减少能源消耗和净化负担.
该方法促进过渡金属的下游加工,并促进可持续的电池回收利用.

关键词:

碳热还原预处理 (热解)提取关键金属的提取方法水力金回收的回收利用方法的回收是为了回收.选择性冲洗是一种选择性的冲洗.使用过的离子电池.

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