推进锂离子电池正极材料回收的可持续实践:磁性钴回收的机械化学优化†。

Joshua Vauloup, Cécile Bouilhac, Nicolas Coppey, Patrick Lacroix-Desmazes, Bernard Fraisse, Lorenzo Stievano, Laure Monconduit and Moulay Tahar Sougrati
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引用次数: 0

摘要

锂离子电池(LIB)因其成熟的技术和卓越的性能而成为电动汽车的主要动力源。因此,锂离子电池正极材料中的金属成分(镍、钴、锂和锰)具有重要的战略意义。这些金属的回收利用势在必行,因此有必要开发新型技术,以减少现有湿法冶金过程中产生的二次污染,包括废水产生、能源和化学品消耗过多等问题。在本研究中,我们提出了一种优化的机械化学工艺,专门用于从钴酸锂中磁性回收钴,钴是锂电池的重要组成部分。我们的方法包括在铝的促进下对钴进行初步还原,然后利用所获物种的磁性能进行选择性萃取。我们对研磨参数进行了系统探索,以全面了解它们对化学反应的影响,并提高还原效率。这项研究在促进 LIB 阴极材料回收领域的可持续实践方面迈出了重要一步,解决了与资源管理和环境影响有关的关键问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Advancing sustainable practices in Li-ion battery cathode material recycling: mechanochemical optimisation for magnetic cobalt recovery†

Advancing sustainable practices in Li-ion battery cathode material recycling: mechanochemical optimisation for magnetic cobalt recovery†

Lithium-ion batteries (LIBs) stand as the dominant power source for electric vehicles owing to their mature technology and exceptional performance. Consequently, metallic components of LIB cathode materials (Ni, Co, Li, and Mn) are assuming strategic significance. The imperative recycling of these metals has necessitated the development of novel technologies that can curtail secondary pollution arising from prevailing hydrometallurgical procedures, including issues such as wastewater generation and excessive energy and chemical consumption. In this study, we present an optimised mechanochemical process tailored for the magnetic recovery of cobalt from LiCoO2, which is a crucial component of LIBs. Our methodology involves the initial reduction of cobalt, facilitated by aluminium, followed by a selective extraction process that leverages the magnetic properties of the obtained species. A systematic exploration of milling parameters was undertaken to comprehensively understand their influence on chemical reactions and to improve reduction efficiency. This research represents a significant stride towards fostering sustainable practices in the realm of LIB cathode material recycling, addressing critical concerns related to resource management and environmental impact.

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