Abstract A review of separating methods used in domestic and electric vehicle lithium ion battery recycling is presented, focusing on physical processes which are commonly utilized prior to further chemical processing and purification steps. The four processes of stabilization, disassembly, separation and binder negation are reviewed and the strengths and weaknesses in current research identified. The main limitation with current recycling methods is the comminution step, which mixes, sometimes intimately, the materials from different cell components. This mixed waste stream requires further physical separation, and produces cross contamination in the different material streams. Effective separation of battery components, which produces enhanced purity of waste streams is essential to providing a cost-effective recycling process for direct or “closed loop” recycling. Improvements in the separation process are possible if the materials are separated prior to comminution, to prevent contamination of the different materials streams. In addition to purity of waste streams, one area mostly neglected in the literature is the health and safety implications and hazards associated with the chemicals contained within the cells. Little information is known about the chemical reactions which may occur during the physical separation processes and this has been identified as an area which needs substantially more investigation.

中文翻译：

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用于锂离子电池安全回收的物理过程综述

摘要 综述了家用和电动汽车锂离子电池回收中使用的分离方法，重点介绍了在进一步化学处理和纯化步骤之前常用的物理过程。回顾了稳定、分解、分离和粘合剂否定的四个过程，并确定了当前研究中的优势和劣势。当前回收方法的主要限制是粉碎步骤，它混合了来自不同细胞成分的材料，有时是紧密混合。这种混合废物流需要进一步的物理分离，并在不同的材料流中产生交叉污染。电池组件的有效分离，产生更高纯度的废物流对于为直接或“闭环”回收提供具有成本效益的回收过程至关重要。如果在粉碎之前将材料分离，以防止不同材料流的污染，则可以改进分离过程。除了废物流的纯度之外，文献中最被忽视的一个领域是与细胞内所含化学物质相关的健康和安全影响和危害。关于物理分离过程中可能发生的化学反应的信息知之甚少，这已被确定为需要更多调查的领域。以防止污染不同的材料流。除了废物流的纯度之外，文献中最被忽视的一个领域是与细胞内所含化学物质相关的健康和安全影响和危害。关于物理分离过程中可能发生的化学反应的信息知之甚少，这已被确定为需要更多调查的领域。以防止污染不同的材料流。除了废物流的纯度之外，文献中最被忽视的一个领域是与细胞内所含化学物质相关的健康和安全影响和危害。关于物理分离过程中可能发生的化学反应的信息知之甚少，这已被确定为需要更多调查的领域。