Electrochemical recovery of lithium-ion battery materials from molten salts by microstructural characterization using X-ray imaging
Electrochemical recovery of lithium-ion battery materials from molten salts by microstructural characterization using X-ray imaging
复制标题
使用 X 射线成像进行微观结构表征，从熔盐中电化学回收锂离子电池材料
DOI：
10.1016/j.xcrp.2023.101333
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发表时间：
2023-03
影响因子：
8.9
通讯作者：
Mateen Mirza;W. Du;L. Rasha;Steven Wilcock;A. Jones;P. Shearing;D. Brett
中科院分区：
文献类型：
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作者：
Mateen Mirza;W. Du;L. Rasha;Steven Wilcock;A. Jones;P. Shearing;D. Brett
回收废旧锂离子电池（LiBs）通过减少对原材料供应的需求和抵消与制造相关的能源和环境成本，保证了重要金属资源的保护。采用熔盐作为萃取溶剂提供了一种更环保、更简单的电化学方法来回收金属。目前对熔盐中金属的电化学回收机理的认识需要改进，以优化该工艺。x射线计算机断层扫描为三维微观结构可视化和随后的量化提供了非破坏性的方法。本文研究了在LiCl-KCl共晶（LKE）中从钴酸锂中回收的钴金属licoo2的电化学沉积。这种诊断方法已应用于450°C电解前后的LiCoO2-LKE样品，对产物形成的形态演化产生了关键的见解。
Recycling spent lithium-ion batteries (LiBs) guarantees the conservation of important metal resources by reducing demands on raw supply and offsetting the energy and environmental costs associated with its manufacture. Employing a molten salt as a solvent for extraction affords a much greener and simpler route to metal recovery by electrochemical means. The current mechanistic understanding of the electrochemical recovery of metals in molten salts needs to be improved for the process to be optimized. X-ray computed tomography offers a non-destructive approach for 3D microstructure visualization and subsequent quantification. Here, we study the electrochemical deposition of recovered cobalt metal from lithium cobalt oxide, LiCoO2in LiCl-KCl eutectic (LKE). This diagnostic approach has been applied to LiCoO2-LKE samples before and after electrolysis at 450°C, yielding key insights into the morphological evolution of product formation.