三乙醇胺溶解分离回收铝钴膜废料正极材料
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摘要
以铝钴膜边角料为研究对象,开展从废料直接回收钴酸锂正极材料的研究工作,结果表明,控制反应温度50℃、反应时间2h、三乙醇胺浓度0.5mol/L、固液比0.75/10、超声频率18kHz的条件下,可以剥离81%的钴酸锂正极材料,较其他强酸体系对钴酸锂材料本身的破坏作用要小,可以直接回收钴酸锂。回收后钴酸锂的结构和形貌有一定的变化,但不显著。
Process to recycle lithium cobalt oxide cathode material directly from scrap of cobalt-aluminium film was investigated.The results show that 81% of lithium cobalt oxide cathode material can be recovered under the conditions including reaction temperature of 50 ℃,reaction time of 2 h,triethanolamine concentration of 0.5mol/L,ratio of solid to liquid of 0.75/10,and ultrasonic frequency of 18 kHz.The process exerts much fewer damaging effects on lithium cobalt oxide than other strong acid system.With little change on structure and morphology,lithium cobalt oxide can be recycled directly to produce lithium battery.
Process to recycle lithium cobalt oxide cathode material directly from scrap of cobalt-aluminium film was investigated.The results show that 81% of lithium cobalt oxide cathode material can be recovered under the conditions including reaction temperature of 50 ℃,reaction time of 2 h,triethanolamine concentration of 0.5mol/L,ratio of solid to liquid of 0.75/10,and ultrasonic frequency of 18 kHz.The process exerts much fewer damaging effects on lithium cobalt oxide than other strong acid system.With little change on structure and morphology,lithium cobalt oxide can be recycled directly to produce lithium battery.
引文
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[11]金玉健,梅光军,李树元.废锂离子电池LiCoO2电极中钴的超声辅助浸出[J].湿法冶金,2006,25(2):97-99.
[12]杨卜,李敦钫,王成彦,等.失效锂离子电池直接空气氧化氨性浸出研究[J].有色金属(冶炼部分),2009(4):2-5.
[2]孙欣,魏进平,王晓宇,等.失效锂离子蓄电池的回收[J].电源技术,2004,28(12):794-797.
[3]刘帆,周有池,王林生,等.从废旧锂离子电池提钴后液中回收锂[J].无机盐工业,2017,49(2):50-53.
[4]王大辉,王利.锂离子电池正极废料盐化焙烧及硫酸钠的作用[J].粉末冶金工业,2013,23(5):42-45.
[5]ZHANG P W,YOKOYAMA T,ITABASHI O,et al.Hydrometallurgical process for recovery of metal values from spent lithium-ion secondary batteries[J].Hydrometallurgy,1999,47:259-271.
[6]吴芳.从废旧锂离子二次电池中回收钴和锂[J].中国有色金属学报,2004,14(4):697-701.
[7]钟海云,李荐,柴立元.从锂离子二次电池正极废料-铝钴膜中回收铝的工艺研究[J].稀有金属与硬质合金,2001,1(1):1-4.
[8]CHURL K L,KANG-IN R.Reductive leaching of cathodic active materials from lithium ion battery wastes[J].Hydrometallurgy,2003,68(1/2/3):5-10.
[9]XU J Q,THOMAS H R,FRANCIS ROB W,et al.A review of processes and technologies for the recycling of lithium-ion secondary batteries[J].Journal of Power Sources,2008,177(2):512-527.
[10]郭丽萍,方伟,杜小弟,等.用硫代硫酸钠取代双氧水还原钴酸锂的研究[J].无机盐工业,2006,38(5):49-50.
[11]金玉健,梅光军,李树元.废锂离子电池LiCoO2电极中钴的超声辅助浸出[J].湿法冶金,2006,25(2):97-99.
[12]杨卜,李敦钫,王成彦,等.失效锂离子电池直接空气氧化氨性浸出研究[J].有色金属(冶炼部分),2009(4):2-5.