涉及选择性分离NMC/LMO和LCO/LMO二元阴极材料的界面化学 通过使用油脂酸的泡漂浮使用油脂酸
Richard K Oboh1, Kaiwu Huang2, Seoung-Bum Son3
1Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, United States.
ACS applied materials & interfaces
|February 24, 2026
概括
使用油酸的泡漂浮有效地将有价值的---氧化物 (NMC) 和氧化物 (LCO) 阴极材料从回收电池中的氧化物 (LMO) 中分离出来,从而实现高效的电池回收.
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:
- 回收的离子电池 (LIB) 原料表现出可变的阴极组成,使下游提炼复杂化.
- 有效地分离不同的阴极化学物质对于可持续的LIB回收至关重要.
研究的目的:
- 为了证明泡漂浮用于选择性阴极材料分离的可行性.
- 研究油酸在不同阴极表面的选择性吸附背后的机制.
主要方法:
- 实验室规模的泡漂浮试验使用油酸作为收集器.
- ζ-电位,接触角度,气泡粒子附着和X射线光电子谱学 (XPS) 分析.
- 使用回收的正极材料进行验证.
主要成果:
- 在单个漂浮阶段实现了80%的分离效率.
- 生产的NMC/LCO泡产品的纯度>90%和~90%的产量.
- 在水槽产品中含有~90%纯度和~90%产量的丰富的LMO.
- 油酸吸附使NMC/LCO表面变得疏水,增强漂浮.
结论:
- 泡漂浮是一种可行的,低成本的,可扩展的策略,用于LIB回收中的阴极/阴极分离.
- 这种方法可以预先缩有价值的阴极材料进行进一步处理.
- 这项研究阐明了不同阴极材料上油酸盐吸附的机制.
相关概念视频
Extraction: Advanced Methods
1.2K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.2K
Interfacial Electrochemical Methods: Overview
980
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
980
Capillary Electrophoresis: Applications
1.5K
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
1.5K
Electrodeposition
1.7K
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...
Electrodeposition can...
1.7K


