Abstract A novel process of electrochemical cathode reduction has been developed for leaching of metals from spent LiNi1/3Co1/3Mn1/3O2 material. The leaching efficiencies of Li, Ni, Co and Mn reached to 100, 99.87, 99.58 and 99.82%, respectively with 1.5 mol/L malic acid and working voltage of 8 V at 300 r/min and 60 °C for 30 min. Kinetics analysis indicates that leaching process is controlled by surface chemical reaction. The Ea for Li, Ni, Co and Mn was 41.71, 42.83, 44.38 and 43.17 kJ/mol, respectively. Based on EIS analysis, leaching process is mainly controlled by charge transfer resistance of the surface chemical reaction.

中文翻译：

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从废锂离子电池的 LiNi 1/3 Co 1/3 Mn 1/3 O 2 材料中浸出金属的新工艺：工艺优化和动力学方面

摘要 开发了一种电化学阴极还原新工艺，用于从废 LiNi1/3Co1/3Mn1/3O2 材料中浸出金属。Li、Ni、Co和Mn的浸出效率分别达到100%、99.87%、99.58%和99.82%，在1.5 mol/L的苹果酸和8 V的工作电压下，300 r/min和60 °C 30 min。动力学分析表明浸出过程受表面化学反应控制。Li、Ni、Co 和 Mn 的 Ea 分别为 41.71、42.83、44.38 和 43.17 kJ/mol。基于EIS分析，浸出过程主要受表面化学反应的电荷转移阻力控制。