储能科学与技术 ›› 2024, Vol. 13 ›› Issue (6): 1861-1870.doi: 10.19799/j.cnki.2095-4239.2024.0007

• 储能材料与器件 • 上一篇    下一篇

废旧锂离子电池有价金属资源化利用的转化过程和潜在环境影响

张玉超1(), 张凤姣1, 娄伟1,2, 昝飞翔1, 王琳玲1, 盛安旭1, 吴晓辉1, 陈静1()   

  1. 1.长江流域多介质污染协同控制湖北省重点实验室,华中科技大学环境科学与工程学院,湖北 武汉 430074
    2.湖南省工业固废资源化与安全处置工程技术研究中心,湖南 长沙 410032
  • 收稿日期:2024-01-03 修回日期:2024-01-25 出版日期:2024-06-28 发布日期:2024-06-26
  • 通讯作者: 陈静 E-mail:zhangyuchao@hust.edu.cn;chenjing@hust.edu.cn
  • 作者简介:张玉超(2000—),男,硕士研究生,研究方向为废旧锂离子电池回收,E-mail:zhangyuchao@hust.edu.cn

Transformation process of valuable metals in the recycling of spent lithium-ion batteries and the potential environmental impact

Yuchao ZHANG1(), Fengjiao ZHANG1, Wei LOU1,2, Feixiang ZAN1, Linling WANG1, Anxu SHENG1, Xiaohui WU1, Jing CHEN1()   

  1. 1.Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
    2.Hunan Provincial Engineering Research Center for Resource Recovery and Safe Disposal of Industrial Solid Waste, Changsha 410032, Hunan, China
  • Received:2024-01-03 Revised:2024-01-25 Online:2024-06-28 Published:2024-06-26
  • Contact: Jing CHEN E-mail:zhangyuchao@hust.edu.cn;chenjing@hust.edu.cn

摘要:

随着新能源电动汽车市场的高速发展,产生了大量亟待处置的废旧锂离子电池。废旧锂离子电池正极材料中的有价金属含量丰富,具有巨大的回收价值,但回收过程中也会产生潜在的二次污染,对生态环境和作业工人产生危害。本文根据废旧锂离子电池的组成和结构,深入分析了正极材料有价金属在预处理、回收和再生三个环节中的转化历程和机制,讨论了杂质元素的干扰和响应对策。重点分析了预处理过程中电解质、有机黏结剂以及集流体铝箔对正极材料分离的影响,探讨了正极材料有价金属在回收和再生过程中的反应机制,包括传统的火法、湿法回收和新兴的再生工艺,从回收效率、能/物耗、环境影响等多个角度总结了工艺的特点。最后,对废旧锂离子电池正极材料资源化利用的发展方向和前景进行了展望。本文旨在为正极材料有价金属的高效资源化利用方法提供研究思路和选择依据。

关键词: 废旧锂离子电池, 资源化, 有价金属, 反应机制, 环境影响

Abstract:

With the rapid development of the new energy electric vehicle industry, a significant volume of spent lithium-ion batteries require safe disposal. The valuable metals in the cathode materials of these batteries can be recycled and reused due to their intrinsic value. Nevertheless, the potential secondary pollution affecting the environment and workers' health during the recycling process warrants attention. This study details the transformation process and mechanism of valuable metals during the three stages of pretreatment, recycling, and regeneration, with a focus on the composition and structure of spent lithium-ion batteries. The effects of impurity elements on the recycling of valuable metals and the corresponding modification methods are discussed. Initially, the impact of the electrolyte, organic binder, and collector aluminum foil on the separation of cathode materials in the pretreatment stage is elucidated. Subsequently, the reaction mechanisms of valuable metals and influencing factors are examined through methods such as pyrometallurgy, hydrometallurgy, and regeneration. The characteristics of these methods are summarized from the perspectives of recycling efficiency, energy and material consumption, and environmental impact. Lastly, this study reviews the development and prospects of the recycling techniques for valuable metals from spent lithium-ion batteries, aiming to provide a scientific basis and methodological reference for the efficient recycling and utilization of these metals.

Key words: spent lithium-ion batteries, resource, valuable metals, reaction mechanisms, environmental impact

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