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从使用过的离子电池材料中选择性回收阴极材料,并进行室温附近的分离

Tianya Wang^1,2,3, Tianyi Tao^1,2,3, Weiguang Lv^1,2,3

¹National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

ACS applied materials & interfaces

|February 16, 2024

概括

非热等离子处理 (NTP) 为回收离子电池 (LIB) 提供了一种节能的回收方法. 这种创新方法在室温附近实现了高阴极材料分离率,最大限度地减少了浪费和副作用.

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:

回收离子电池 (LIB) 需要将正极材料与电流收集器分离.
目前的方法依赖于在高温 (400-600°C) 下的聚乙烯化物 (PVDF) 结合剂分解.
高温工艺会引起不良的副作用,包括电流收集器损坏和材料降解.

研究的目的:

研究非热等离子体 (NTP) 作为LIB阴极材料分离的低温方法.
为了实现从电流采集器中高效分离阴极材料.
在LIB回收过程中尽量减少能源消耗和副作用.

主要方法:

应用非热等离子处理 (NTP) 对使用过的离子电池组件.
通过NTP打破分子链,使聚乙烯化物 (PVDF) 结合剂失活.
控制的处理条件:在~80°C下持续~2000s.

主要成果:

从电流采集器中实现了高分离率的阴极材料,高达95.69%.
获得了高质量的阴极材料,含有最小的杂质含量 (0.02 wt %).
由于低温加工,减少了副作用.

结论:

非热等离子体 (NTP) 处理为LIB回收提供了有效和节能的替代方案.
与传统的高温方法相比,这种方法显著减少了回收步骤和能源消耗.
在电子废物回收方面,NTP方法显示了更广泛的应用潜力.

关键词:

这是一个PVDF.阴极材料的材料是正极材料.没有激活的失活.非热等离子体非热等离子体分离式隔离器的使用方法

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