一项关于利用泡漂浮技术从混合离子电池化学中回收石墨的回收策略的研究
Hanna Sahivirta1, Benjamin P Wilson1, Mari Lundström1
1Department of Chemical and Metallurgical Engineering (CMET), School of Chemical Engineering, Aalto University, Vuorimiehentie 2, 02150, Espoo, Finland.
Waste management (New York, N.Y.)
|April 2, 2024
概括
在水力金加工之前,泡漂浮有效地从混合离子电池 (LIB) 材料中回收石墨. 这种方法对从电动汽车电池中回收有价值的组件有希望.
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.
- 可持续技术 可持续技术
背景情况:
- 越来越多的电动汽车 (EV) 采用增加了对离子电池 (LIB) 原材料的需求.
- LIB回收对于可持续的材料采购和使用寿命末期电池的管理至关重要.
- 新的电池化学需要适应混合原料的可适应的回收策略.
研究的目的:
- 评估泡漂浮用于从混合LIB阴极和阳极材料中分离石墨.
- 为了评估模拟黑质和水后残留物上的漂浮性能.
- 为了确定在LIB回收过程中石墨浮动的最佳阶段.
主要方法:
- 进行了实验室规模的泡漂浮实验.
- 使用了两个黑质样本模型:NMC811-LTO-石墨和石墨-TiO2.2.
- 分析了漂浮动力学和产品等级.
主要成果:
- 从NMC811-LTO-石墨混合物中恢复了>98%的石墨等级.
- 浮动动力学因存在的特定电极粒子物种而异.
- 由于超细颗粒的携带,从TiO2混合物中获得了低质量的石墨 (<96%).
结论:
- 泡漂浮是一种从复杂的LIB原料中回收高纯度石墨的可行方法.
- 石墨漂浮在水合金手术治疗之前进行时最有效.
- 了解漂浮动力学是优化LIB回收过程的关键.
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