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Updated: May 15, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

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开发固定工艺,用于水平回收

Kazuki Fujiwara¹, Kaisei Ito¹, Shunsuke Kuzuhara¹

¹National Institute of Technology, Sendai College, 48 Nodayama Medeshima-Shiote, Miyagi, Natori 981-1239, Japan.

Materials (Basel, Switzerland)

|May 14, 2025

概括

从离子电池阴极材料中有效地回收 (Li),通过在气下在400°C下化LiCoO2和聚乙烯化物 (PVDF) 混合物. 化物杂质在湿处理方法中使用化合物固定.

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:

离子电池 (LIB) 对于储能至关重要,但有效地从已耗尽的LIB中回收 (Li) 是环境和经济上的挑战.
阴极活性材料,如LiCoO2,通常与聚乙烯化物 (PVDF) 等结合剂混合,使Li回收复杂化.
来自PVDF的化物 (F) 可以在净化过程中作为杂质,需要有效的固定化策略.

研究的目的:

开发一种有效的方法来从与PVDF混合的LiCoO2中回收Li.
调查在回收过程中固定来自PVDF的化物杂质的方法.

主要方法:

在 (Ar) 或空气大气下,在350-700°C的温度下化了LiCoO2和PVDF的模型样本.
经过优化化条件 (400°C,Ar大气) 之后,进行了水浸以回收.
化合物 (Ca(OH) 2,CaCO3) 和分层的双氧化物被探索使用干燥和湿处理方法进行F固定.
湿过程涉及将Ca(OH) 2添加到水性LiF溶液中以固定F,然后通过溶液度去除未反应的Ca作为CaCO3.

主要成果:

通过在Ar大气层下在400°C时化模型样本,然后通过水浸来实现完全的回收.
在湿过程中,在经过多次固定程序后,通过使用Ca(OH) 2从水性LiF溶液中成功去除了98.6%的F.
通过缩处理的溶液,未反应的Ca被有效地分离并作为CaCO3去除.

结论:

在400°C的Ar气氛下进行化,然后进行水浸,是从LiCoO2/PVDF混合物中回收的有效方法.
氧化是一种可行的试剂,用于在湿处理方法中固定化物杂质,从而实现高去除效率.
提出的方法为离子电池的可持续回收提供了一个有希望的方法,解决了回收和杂质管理.

关键词:

化是一种化.化物固定的方法盐酸 (Hydrotalcite) 是一种酸.碳酸的碳酸是一种.离子电池是一种离子电池.

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