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Synergistic Leaching of Lithium from Spent Lithium Iron Phosphate and Lithium Cobalt Oxide Cathode Materials
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Renhang LU1, Chunsheng JIANG2, Lanjin LIU1, Zhongtang ZHANG1, Kang YAN1
Hydrometallurgy of China | 2025, 44(2) : 143 - 150
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Hydrometallurgy of China | 2025, 44(2): 143-150
• Experiment Research •
Synergistic Leaching of Lithium from Spent Lithium Iron Phosphate and Lithium Cobalt Oxide Cathode Materials
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Renhang LU1, Chunsheng JIANG2, Lanjin LIU1, Zhongtang ZHANG1, Kang YAN1
Affiliations
  • 1 Jiangxi Provincial Key Laboratory of Green and Low-Carbon Metallurgy of Strategic Nonferrous Metals, Jiangxi University of Science and Technology, Ganzhou 341000, China
  • 2 Jiangxi Ruida New Energy Technology Co., Ltd., Yichun 336000, China
Published: 2025-04-28 doi: 10.13355/j.cnki.sfyj.2025.02.002
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The process of synergistic leaching of lithium from waste lithium iron phosphate (LFP) and lithium cobalt oxide (LCO) battery cathode materials was studied, and the feasibility was analyzed by thermodynamics. The influence of various factors on synergistic leaching was investigated,and the leaching slag was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that LFP and LCO can synergistically leach lithium in an acidic system without adding any oxidant or reducing agent. The leaching rates of Li, Co, Fe and P in the cathode materials of waste batteries are 99.99%, 99.99%, 48.00% and 43.77%, respectively, under the optimal leaching conditions of sulfuric acid concentration of 0.7 mol/L, leaching temperature of 40 ℃, leaching time of 60 min, n(LCO)∶ n(LFP)=0.5 and liquid volume to solid mass ratio of 10 mL/1 g. The method can realize the purpose of recovering valuable metals from complex battery cathode materials under low acid conditions, and has certain popularization and application value.

lithium iron phosphate  /  lithium cobalt oxide  /  cathode materials  /  synergistic leaching  /  recovery  /  lithium
Renhang LU, Chunsheng JIANG, Lanjin LIU, Zhongtang ZHANG, Kang YAN. Synergistic Leaching of Lithium from Spent Lithium Iron Phosphate and Lithium Cobalt Oxide Cathode Materials[J]. Hydrometallurgy of China, 2025 , 44 (2) : 143 -150 . DOI: 10.13355/j.cnki.sfyj.2025.02.002
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Year 2025 volume 44 Issue 2
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doi: 10.13355/j.cnki.sfyj.2025.02.002
  • Receive Date：2024-10-11
  • Online Date：2025-07-05
  • Published：2025-04-28
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  • Received：2024-10-11
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Affiliations
    1 Jiangxi Provincial Key Laboratory of Green and Low-Carbon Metallurgy of Strategic Nonferrous Metals, Jiangxi University of Science and Technology, Ganzhou 341000, China
    2 Jiangxi Ruida New Energy Technology Co., Ltd., Yichun 336000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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