| 含铝废LiFePO4正极粉在H2SO4溶液中的浸出性能 |
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| 引用本文： | 娄文博,张洋,张盈,郑诗礼,孙沛,王晓健,李建中,乔珊,张懿,MarcoWENZEL,JanJ.WEIGAND. 含铝废LiFePO4正极粉在H2SO4溶液中的浸出性能[J]. 中国有色金属学会会刊, 2021, 31(3): 817-831. DOI: 10.1016/S1003-6326(21)65541-3 |
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| 作者姓名： | 娄文博 张洋 张盈 郑诗礼 孙沛 王晓健 李建中 乔珊 张懿 MarcoWENZEL JanJ.WEIGAND |
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| 摘 要： | 研究含铝废LiFePO4(LFP)正极粉中LFP和Al的浸出行为及浸出动力学.考察温度(273～368 K)、搅拌速率(200～950 r/min)、反应时间(0～240 min)、酸料比(0.1:1～1:1 mL/g)和液固比(3:1～9:1 mL/g)对浸出过程的影响.结果表明,反应物浓度和温度对Al浸出影响较大....
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| 关 键 词： | LiFePO4 铝 浸出性能 浸出动力学 |
| 收稿时间： | 2020-03-30 |
Leaching performance of Al-bearing spent LiFePO4 cathode powder in H2SO4 aqueous solution |
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| Wen-bo LOU,Yang ZHANG,Ying ZHANG,Shi-li ZHENG,Pei SUN,Xiao-jian WANG,Jian-zhong LI,Shan QIAO,Yi ZHANG,Marco WENZEL,Jan J. WEIGAND. Leaching performance of Al-bearing spent LiFePO4 cathode powder in H2SO4 aqueous solution[J]. Transactions of Nonferrous Metals Society of China, 2021, 31(3): 817-831. DOI: 10.1016/S1003-6326(21)65541-3 |
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| Authors: | Wen-bo LOU Yang ZHANG Ying ZHANG Shi-li ZHENG Pei SUN Xiao-jian WANG Jian-zhong LI Shan QIAO Yi ZHANG Marco WENZEL Jan J. WEIGAND |
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| Affiliation: | 1. School of Metallurgy, Northeastern University, Shenyang 110819, China;2. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;3. Materials Science & Engineering, University of Utah, Salt Lake City 84112, USA;4. Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden 01062, Germany |
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| Abstract: | The leaching performance and leaching kinetics of LiFePO4 (LFP) and Al in Al-bearing spent LFP cathode powder were systematically studied. The effects of temperature (273?368 K), stirring speed (200?950 r/min), reaction time (0?240 min), acid-to-material ratio (0.1:1?1:1 mL/g) and liquid-to-solid ratio (3:1?9:1 mL/g) on the leaching process were investigated. The results show that the concentration of reactants and the temperature have a greater impact on the leaching of Al. Under the optimal conditions, leaching efficiencies of LFP and Al are 91.53% and 15.98%, respectively. The kinetic study shows that the leaching of LFP is kinetically controlled by mixed surface reaction and diffusion, with an activation energy of 22.990 kJ/mol; whereas the leaching of Al is only controlled by surface chemical reaction, with an activation energy of 46.581 kJ/mol. A low leaching temperature can effectively suppress the dissolving of Al during the acid leaching of the spent LFP cathode material. |
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| Keywords: | aluminum leaching performance leaching kinetics |
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