废旧锂离子电池正极材料的分离及成分分析的实验研究  

Experimental Study on Separation and Component Analysis of Cathode Materials from Spent Lithium Ion Battery

作　　者：詹淼[1,2] 沈新颖[1,2] 朱路平[1] 王利军[1] ZHAN Miao;SHEN Xinying;ZHU Luping;WANG Lijun(School of Environmental and Materials Engineering Shanghai Polytechnic University, Shanghai 201209, China;Shanghai Cooperative Innovation Center for WEEE Recycling, Shanghai Polytechnic University, Shanghai 201209, China)

机构地区：[1]上海第二工业大学环境与材料工程学院,上海201209 [2]上海第二工业大学上海电子废弃物资源化协同创新中心,上海201209

出　　处：《上海第二工业大学学报》2017年第2期112-116,共5页Journal of Shanghai Polytechnic University

基　　金：上海电子废弃物资源化协同创新中心开放课题(B50ZS120003B-10);上海第二工业大学研究生基金(A01GY16F030);上海市联盟计划项目(LM201462);上海自然科学基金资助项目(14ZR1417100)资助

摘　　要：采用人工拆解、高温处理以及浓硫酸与过氧化氢溶解等方式对钴锂离子电池电极材料进行分离及成分分析,考察了浓硫酸加入量、反应温度、时间对正极材料溶解率的影响。研究结果表明:当浓硫酸加入2 m L、控制反应温度70?C、反应时间40 min时,正极材料能够在溶液中很好地溶解,溶解率最高可达92.1%。通过定量分析发现,该锂离子电池正极材料中钴的含量最大,质量分数可达29.52%。与铜钴硫化矿、含钴黄铁矿等矿石相比,该锂离子正极材料的钴丰度较高,极具回收价值。The separation and component analysis of the cathode materials from spent lithium ion battery was studied by the way of manual disassembly and high temperature treatment.The mixture of H2SO4and H2O2was used as the solvent.The effects of the concentration of sulfuric acid,reaction temperature and time on the dissolution rate of the cathode materials were investigated.The results showed that,under the optimum conditions,i.e.,the concentration of sulfuric acid was2mL,reaction temperature was70±Cand time was40min,the cathode material could be well dissolved in solution.The dissolution rate of the cathode materials was up to92.1%under this condition.The quantitative analysis showed that the content of cobalt in the cathode material of the spent lithium ion battery was the highest,and the mass fraction was29.52%.Compared with the copper cobalt sulfide ore,cobalt containing pyrite and other minerals,the lithium ion battery cathode material has high cobalt abundance and high recovery value.

关 键 词：废旧锂离子电池 正极材料 钴酸锂 分离 

分 类 号：X705[环境科学与工程—环境工程]