王继芬1,
高瑞1
1.上海第二工业大学文理学部理学院,上海 201209
基金项目: 国家自然科学基金资助项目(51776116)
上海第二工业大学研究生基金项目(EGD16YJ035)
上海市高原学科-环境科学与工程(资源循环科学与工程)
Metal leaching from waste ternary lithium battery cathode materials
CAI Le1,,WANG Jifen1,
GAO Rui1
1.School of Science, College of Art and Science, Shanghai Polytechnic University, Shanghai 201209, China
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摘要:三元锂电池正极材料中含有大量锰及其他有价金属元素,具有极高的回收利用价值。采用马弗炉加热至530 ℃,恒温1 h,去除三元锂电池正极材料上的聚偏氟乙烯和乙炔黑。用1 mol·L-1的稀硫酸与质量分数为30%的双氧水超声作用10 min将正极集流体洗涤干净。采用1 mol·L-1的稀硫酸将铝箔洗涤并回收。将2部分洗涤液置于90 ℃条件下反应60 min后加入过二硫酸钾,继续反应120 min,制得α-MnO2颗粒。结果表明,锰回收率达到99.5%,镍、钴和锂元素的浸出率分别可达99.8%、99.7%和99.8%。实现三元锂电池的正极材料中镍钴锂的浸出及锰的回收。
关键词: 废旧三元锂电池/
正极材料/
α-MnO2/
浸出
Abstract:Ternary lithium battery cathode materials have extremely high recycling value because they contain a large amount of manganese and other valuable metal elements. The cathode materials of the waste ternary lithium battery were heated to a temperature of 530 °C for 1 h in a muffle furnace to remove polyvinylidene fluoride and acetylene black. The positive electrode current collector was washed with 1 mol·L-1 dilute sulfuric acid and hydrogen peroxide with a mass fraction of 30% for 10 minutes. Aluminum foil was washed with 1 mol·L-1 dilute sulfuric acid and collected. The potassium persulfate was added into the mixture after they were mixed at at 90 ℃ for 60 minutes. The reaction was continued for 120 minutes to obtain α-MnO2 particles. The results showed that the manganese recovery rate reached 99.5%, and the leaching rates of nickel, cobalt, and lithium were 99.8%, 99.7% and 99.8%, respectively. Therefore, it achieved the leaching and recovery of lithium, nickel, cobalt, and manganese from waste ternary lithium battery cathode material.
Key words:waste ternary lithium batteries/
cathode materials/
α-MnO2/
leaching.
[1] | 蔡乐,王继芬.废旧汽车三元锂电池安全放电影响因素探究[J].上海第二工业大学报,2017,34(2):101-105 10.19570/j.cnki.jsspu.2017.02.004 |
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废旧三元锂电池正极材料的金属浸出
蔡乐1,,王继芬1,
高瑞1
1.上海第二工业大学文理学部理学院,上海 201209
基金项目: 国家自然科学基金资助项目(51776116) 上海第二工业大学研究生基金项目(EGD16YJ035) 上海市高原学科-环境科学与工程(资源循环科学与工程)
关键词: 废旧三元锂电池/
正极材料/
α-MnO2/
浸出
摘要:三元锂电池正极材料中含有大量锰及其他有价金属元素,具有极高的回收利用价值。采用马弗炉加热至530 ℃,恒温1 h,去除三元锂电池正极材料上的聚偏氟乙烯和乙炔黑。用1 mol·L-1的稀硫酸与质量分数为30%的双氧水超声作用10 min将正极集流体洗涤干净。采用1 mol·L-1的稀硫酸将铝箔洗涤并回收。将2部分洗涤液置于90 ℃条件下反应60 min后加入过二硫酸钾,继续反应120 min,制得α-MnO2颗粒。结果表明,锰回收率达到99.5%,镍、钴和锂元素的浸出率分别可达99.8%、99.7%和99.8%。实现三元锂电池的正极材料中镍钴锂的浸出及锰的回收。
English Abstract
Metal leaching from waste ternary lithium battery cathode materials
CAI Le1,,WANG Jifen1,
GAO Rui1
1.School of Science, College of Art and Science, Shanghai Polytechnic University, Shanghai 201209, China
Keywords: waste ternary lithium batteries/
cathode materials/
α-MnO2/
leaching
Abstract:Ternary lithium battery cathode materials have extremely high recycling value because they contain a large amount of manganese and other valuable metal elements. The cathode materials of the waste ternary lithium battery were heated to a temperature of 530 °C for 1 h in a muffle furnace to remove polyvinylidene fluoride and acetylene black. The positive electrode current collector was washed with 1 mol·L-1 dilute sulfuric acid and hydrogen peroxide with a mass fraction of 30% for 10 minutes. Aluminum foil was washed with 1 mol·L-1 dilute sulfuric acid and collected. The potassium persulfate was added into the mixture after they were mixed at at 90 ℃ for 60 minutes. The reaction was continued for 120 minutes to obtain α-MnO2 particles. The results showed that the manganese recovery rate reached 99.5%, and the leaching rates of nickel, cobalt, and lithium were 99.8%, 99.7% and 99.8%, respectively. Therefore, it achieved the leaching and recovery of lithium, nickel, cobalt, and manganese from waste ternary lithium battery cathode material.