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| Leaching of Valuable Metals from Cathode Materials of Waste Lithium Ion Batteries in Methanesulfonic Acid - Ascorbic Acid System |
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Received:December 15, 2022
Revised:December 20, 2022
Accepted:December 26, 2022
Published Online:March 17, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.04.001 |
| KeyWord:waste lithium ion battery; methanesulfonic acid; ascorbic acid; kinetics of leaching; Li; Ni; Co; Mn |
| Author | Institution |
| HUANG Guo-liang |
广西大学 资源环境与材料学院 南宁 |
| HUANG Kui |
广西大学 资源环境与材料学院 南宁 |
| CHEN Zhang-qing |
广西大学 资源环境与材料学院 南宁 |
| DING Si-yi |
广西大学 资源环境与材料学院 南宁 |
| WEI Lin |
广西大学 资源环境与材料学院 南宁 |
| DONG Hai-li |
广西大学 资源环境与材料学院 南宁 |
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| Abstract: |
| The valuable metals in waste lithium ion battery cathode materials were leached applying methanesulfonic acid as leaching agent and ascorbic acid as reductant and leaching agent. Effects of methanesulfonic acid concentration, ascorbic acid concentration, ratio of solid to liquid, reaction temperature, and reaction time on leaching rate of Li, Ni, Co and Mn were explored. The results show that the leaching rate of Li, Ni, Co and Mn is 99.74%, 93.47%, 97.16% and 96.52% respectively under the conditions including methanesulfonic acid concentration of 0.6 mol/L, ascorbic acid concentration of 0.1 mol/L, ratio of solid to liquid of 20 g/L, reaction temperature of 40 ℃, and reaction time of 10 min. The shrinkage unreacted core model was used to fit the kinetic data of metal leaching. The apparent activation energy of Li, Ni, Co and Mn is 35.74, 48.37, 36.81, and 37.85 kJ/mol, respectively. The degree of metal leaching is Li > Co > Mn > Ni. |
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