废旧锂离子电池中钴、锂的回收研究进展

发布时间：2019-02-18 08:40

【摘要】：随着锂离子电池产业发展,废旧锂离子电池所带来的环境及资源问题日益突出,废旧锂离子电池中有价金属的资源化、无害化处理逐渐成为国内外的研究热点。为实现废旧锂离子电池中钴、锂资源绿色高效回收,本文介绍了废旧锂离子电池中有价金属回收的研究现状,主要包括预处理、正极材料处理、浸出液回收等环节,着重评述了各环节中新方法及工艺,简要对比了各方法及工艺的优缺点。现阶段研究主要集中于湿法浸出回收工艺,酸-还原剂为典型浸出模型,而动力学控制、离子转移路径等机理方面欠缺。最后展望了今后废旧锂离子电池中钴、锂资源回收研究方向,下一步主要是朝着有机酸浸-沉淀获得优质产品方向发展,需着重强化浸出效率、提升沉淀指标、简化工艺条件,以利于产业化推广。
[Abstract]:With the development of lithium ion battery industry, the environmental and resource problems caused by waste lithium ion battery become increasingly prominent. The recycling of valuable metals in waste lithium ion battery has gradually become a research hotspot at home and abroad. In order to realize the green and efficient recovery of cobalt and lithium in waste lithium ion batteries, this paper introduces the research status of valuable metal recovery in waste lithium ion batteries, including pretreatment, treatment of cathode materials, recovery of leachate, etc. The new methods and processes in each link are emphatically reviewed, and the advantages and disadvantages of each method and process are briefly compared. At present, the research is mainly focused on the recovery process of wet leaching, the acid-reducing agent is the typical leaching model, but the kinetic control, ion transfer path and other mechanisms are lacking. Finally, the future research direction of recovery of cobalt and lithium from waste lithium ion batteries is prospected. The next step is to develop towards organic acid leaching and precipitation to obtain high quality products. It is necessary to strengthen leaching efficiency, improve precipitation index and simplify technological conditions. In order to promote industrialization.
【作者单位】：昆明理工大学冶金与能源工程学院锂离子电池及材料制备技术国家地方联合工程实验室云南省先进电池材料重点实验室(筹);
【分类号】：X705

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