酸浸和沉淀组合工艺回收废锂离子电池中的钴和锂（英文）

基于废锂离子电池中的金属在不同价态时的化学行为差异,通过化学精制从废弃锂离子电池中获取高附加值的钴锂化学产品。将从正极中分离出来的活性物质溶解在硫酸和过氧化氢溶液中,加入（NH4）2C2O4生成CoC2O4·2H2O 沉淀。在获得CoC2O4·2H2O 后,加 Na2CO3获得Li2CO3沉淀。实验结果表明：96.3% 的Co和87.5%的Li溶解在2mol/LH2SO4和2.0%H2O2（体积分数）溶液中,并且有94.7 %的Co和71.0%的Li以CoC2O4·2H2O和Li2CO3的形式沉淀下来。...

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Published in中国有色金属学报：英文版 Vol. 22; no. 9; pp. 2274 - 2281
Main Author 朱曙光 贺文智 李光明 周旭 张骁君 黄菊文
Format Journal Article
LanguageEnglish
Published 2012
Subjects
回收
废锂离子电池
沉淀
浸出
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Summary:基于废锂离子电池中的金属在不同价态时的化学行为差异,通过化学精制从废弃锂离子电池中获取高附加值的钴锂化学产品。将从正极中分离出来的活性物质溶解在硫酸和过氧化氢溶液中,加入（NH4）2C2O4生成CoC2O4·2H2O 沉淀。在获得CoC2O4·2H2O 后,加 Na2CO3获得Li2CO3沉淀。实验结果表明：96.3% 的Co和87.5%的Li溶解在2mol/LH2SO4和2.0%H2O2（体积分数）溶液中,并且有94.7 %的Co和71.0%的Li以CoC2O4·2H2O和Li2CO3的形式沉淀下来。
Bibliography:Cathode material of spent lithium-ion batteries was refined to obtain high value-added cobalt and lithium products based on the chemical behaviors of metal in different oxidation states. The active substances separated from the cathode of spent lithium-ion batteries were dissolved in H2SO4 and H2O2 solution, and precipitated as CoC2O4·2H2O microparticles by addition of （NH4）2C2O4. After collection of the CoC2O4·2H2O product by filtration, the Li2CO3 precipitates were obtained by addition of Na2CO3 in the left filtrate. The experimental study shows that 96.3% of Co （mass fraction） and 87.5% of Li can be dissolved in the solution of 2 mol/L H2SO4 and 2.0% H2O2 （volume fraction）, and 94.7% of Co and 71.0% of Li can be recovered respectively in the form of CoC2O4·2H2O and Li2CO3.
43-1239/TG
ZHU Shu-guang1, 2, HE Wen-zhi1, LI Guang-ming1, ZHOU Xu1, ZHANG Xiao-jun1, HUANG Ju-wen1 1. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; 2. School of Environment and Energy Engineering, Anhui University of Architecture, Hefei 230022, China
spent lithium-ion batteries;recovery;leaching;precipitation
ISSN:1003-6326