废旧三元锂电池正极材料的金属浸出

蔡乐; 王继芬; 高瑞

doi:10.12030/j.cjee.201711215

环境工程学报

废旧三元锂电池正极材料的金属浸出

, ,

蔡乐, 王继芬, 高瑞. 废旧三元锂电池正极材料的金属浸出[J]. 环境工程学报, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

引用本文:

蔡乐, 王继芬, 高瑞. 废旧三元锂电池正极材料的金属浸出[J]. 环境工程学报, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

CAI Le, WANG Jifen, GAO Rui. Metal leaching from waste ternary lithium battery cathode materials[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

Citation:

CAI Le, WANG Jifen, GAO Rui. Metal leaching from waste ternary lithium battery cathode materials[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

废旧三元锂电池正极材料的金属浸出

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

1.
School of Science, College of Art and Science, Shanghai Polytechnic University, Shanghai 201209, China
Fund Project:

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。
- 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.
- waste ternary lithium batteries /
- cathode materials /
- α-MnO2 /
- leaching

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蔡乐, 王继芬, 高瑞. 废旧三元锂电池正极材料的金属浸出[J]. 环境工程学报, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

引用本文:

蔡乐, 王继芬, 高瑞. 废旧三元锂电池正极材料的金属浸出[J]. 环境工程学报, 2018, 12(6): 1833-1842. doi: 10.12030/j.cjee.201711215

Citation:

废旧三元锂电池正极材料的金属浸出

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:

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

1. School of Science, College of Art and Science, Shanghai Polytechnic University, Shanghai 201209, China

Fund Project:

Keywords:

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.