Simultaneous recovery of valuable components from spent LiNi0.6Co0.2Mn0.2O2 and LiFePO4 batteries by ammonium sulfate roasting-leaching
Copyright © 2025 Elsevier Ltd. All rights reserved.
| Publié dans: | Waste management (New York, N.Y.). - 1999. - 206(2025) vom: 10. Sept., Seite 115051 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Waste management (New York, N.Y.) |
| Sujets: | Journal Article Ammonium sulfate Leaching Lithium iron phosphate Roasting Ternary material battery Ammonium Sulfate SU46BAM238 Lithium 9FN79X2M3F plus... |
| Résumé: | Copyright © 2025 Elsevier Ltd. All rights reserved. To further reduce the cost and energy consumption of recycling spent lithium-ion batteries (LIBs), this paper proposes a novel technique for simultaneously recovering Li, Ni, Co, and Mn from spent LiNi0.6Co0.2Mn0.2O2 (S-NCM) and LiFePO4 (S-LFP) batteries using ammonium sulfate mixed roasting. Thermogravimetric analysis of the mixture and XRD analysis of the roasting products indicate that (NH4)2SO4 begins to decompose at around 275 °C, forming NH4HSO4, which participates in the reaction above 350 °C. Above 375 °C, sulfates are generated as reaction products. FT-IR analysis revealed that the peak at 630 cm-1, corresponding to metal sulfates in the roasted product, significantly decreased in intensity after leaching, indicating the formation of soluble sulfates. Optimization of the roasting conditions reveals that at a roasting temperature of 400 °C, a roasting time of 60 min, and an ammonium sulfate ratio of 1/1/8, the recovery efficiencys of Li, Ni, Co, and Mn are 94.0 %, 95.6 %, 93.7 %, and 98.7 %, respectively. Energy and environmental analysis using the Ever Batt model demonstrates that the energy consumption of this method is only 52 % of commercial hydrometallurgical processes, and greenhouse gas emissions are only 38 % of commercial pyrometallurgical processes |
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| Description: | Date Completed 16.09.2025 Date Revised 16.09.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2025.115051 |