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化"黑质量"原料及其与离子电池回收相关的合成代理

Alexander J Bologna^1,2, Rebecca C Vincent^2,3, Anna Kallistova²

¹Department of Chemistry & Biochemistry, University of California Santa Barbara, California 93106, United States.

|June 30, 2025

概括

回收离子电池 (LIB) 会产生复杂阶段的黑质量. 了解这些阶段是有效地从废旧电池中回收有价值材料的关键.

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:

离子电池 (LIB) 循环利用旨在从使用寿命已结束的电池中回收有价值的材料.
工业过程从切碎和化的电池组件中产生"黑质量".
黑质的组成因原料的复杂性而变化,阻碍了有效的材料回收.

研究的目的:

描述从工业来源的LIB回收的黑质中存在的阶段.
调查处理顺序如何影响黑质中的相位形成.
识别小阶段并指导有效回收有价值的电池材料.

主要方法:

分析了三种不同的,工业来源的黑质样本,其中包含Li-Ni_xMn_yCo_z) -O₂正极电极.
利用同步射线X射线和中子粉衍射用于结构和相位识别.
采用了元素特定的技术,包括XPS,XRF,EDS和ICP-OES用于组成分析.

主要成果:

确定了商业LIB回收原料处理过程中形成的一系列反应产品和阶段.
量化了黑质样本中存在的不同相的相对丰度.
证明了加工顺序对黑质的相组合产生的影响.

结论:

黑质相的表征对于优化LIB回收至关重要.
了解相位变化,可以为开发更高效的水力金回收工艺提供信息.
对模型系统的进一步研究有助于确定有针对性的材料回收的小阶段.

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