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使用电介电泳进行离子电池电极材料的分类

Jasper Giesler¹, Laura Weirauch¹, Alica Rother²

¹Chemical Process Engineering, Faculty of Production Engineering, University of Bremen, Bremen 28359, Germany.

|July 31, 2023

概括

回收离子电池 (LIB) 对于循环经济至关重要. 电介电泳有效地将LiFePO4与石墨分离,产生用于资源回收的纯 LiFePO4 分数.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
化学工程是化学工程的重要组成部分.

背景情况:

对离子电池 (LIB) 的需求不断增加,需要有效回收原材料.
目前的LIB回收方法 (火烧,水金属,浮动) 面临着材料损失,废物产生和选择性差等挑战.
活性电极材料的回收利用是实现循环经济的关键研究领域.

研究的目的:

为了研究介电泳的有效性,从石墨微粒中分离LiFePO4.
评估介电泳作为LIBs的高通量回收技术的潜力.
为了确定从混合电极材料中回收LiFePO4的电介电泳的选择性.

主要方法:

测试商业上可用的LiFePO4和石墨微粒.
使用介电化高通量波器系统.
在介电电泳力下分析粒子行为.

主要成果:

与LiFePO4颗粒相比,石墨颗粒的捕获效率明显更高.
介电泳证明了两种材料的选择性分离.
从与石墨的混合物中可以获得近乎纯净的LiFePO4微分.

结论:

电介电泳是选择性LIB回收的有前途的技术.
这种方法为现有的回收方法的缺点提供了潜在的解决方案.
高通量介电泳可以促进资源回收,以实现电池材料的循环经济.

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相关概念视频

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...