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Application of Synergistic Effect of Succinic Acid and Hydrogen Peroxide in Recycling of Spent Lithium Iron Phosphate Batteries
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Pengfei YANG, Huichen LIANG, Wanli LU, Youming YE, Xuezhen XIE, Yanmeng CHEN, Xiaoshu WANG
Hydrometallurgy of China | 2026, 45(3) : 317 - 323
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Hydrometallurgy of China | 2026, 45(3): 317-323
• Experiment Research •
Application of Synergistic Effect of Succinic Acid and Hydrogen Peroxide in Recycling of Spent Lithium Iron Phosphate Batteries
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Pengfei YANG, Huichen LIANG, Wanli LU, Youming YE, Xuezhen XIE, Yanmeng CHEN, Xiaoshu WANG
Affiliations
  • College of Chemistry and Materials Engineering, Guangxi Science and Technology Normal University, Laibin　546100, China
Published: 2026-06-20 doi: 10.13355/j.cnki.sfyj.2026.03.006
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Recycling spent LiFePO4 batteries is crucial for mitigating resource shortages and lowering environmental pollution. Leaching lithium from the spent LiFePO4 batteries using succinic acid-hydrogen peroxide system was investigated. The effects of succinic acid concentration, hydrogen peroxide volume fraction, solid mass to liquid volume ratio, leaching temperature and time on lithium leaching rate were examined. The leaching mechanism was further clarified through kinetic analysis and SEM. The results indicate that under the optimal leaching conditions of succinic acid of 0.8 mol/L, hydrogen peroxide of 2%, solid mass to liquid volume ratio of 4 mg/1 mL, leaching temperature of 80 ℃, and time of 40 min, the conditions, lithium leaching rate is more than 98%, while iron leaching rate is less than 2%. Kinetic analysis reveals that the leaching process is primarily diffusion-controlled. Overall, these findings demonstrate that the synergistic succinic acid-hydrogen peroxide system offers high efficiency and sustainability in LiFePO4 leaching, providing a feasible route for the green recycling of spent LiFePO4 batteries.

succinic acid  /  hydrogen peroxide  /  organic acid  /  spent lithium batteries  /  LiFePO4  /  leaching  /  lithium
Pengfei YANG, Huichen LIANG, Wanli LU, Youming YE, Xuezhen XIE, Yanmeng CHEN, Xiaoshu WANG. Application of Synergistic Effect of Succinic Acid and Hydrogen Peroxide in Recycling of Spent Lithium Iron Phosphate Batteries[J]. Hydrometallurgy of China, 2026 , 45 (3) : 317 -323 . DOI: 10.13355/j.cnki.sfyj.2026.03.006
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Year 2026 volume 45 Issue 3
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doi: 10.13355/j.cnki.sfyj.2026.03.006
  • Receive Date：2025-12-23
  • Online Date：2026-09-11
  • Published：2026-06-20
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  • Received：2025-12-23
  • Revised：2026-01-19
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    College of Chemistry and Materials Engineering, Guangxi Science and Technology Normal University, Laibin　546100, 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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