As cobalt is a strategic metal essential for the energy and digital transition, the current research work focuses on cobalt recovery from Li‐ion batteries by precipitation. Simulation results allow determination of the cobalt hydroxide precipitation conditions for a complete cobalt recovery. The experimental results show the high impact of temperature on cobalt hydroxide precipitation kinetics and on particle size distribution. Indeed, cobalt recovery is optimal at 25 °C, with a yield of nearly 100 %. However, the simulation results show that it is necessary to be careful about the chosen temperature to avoid coprecipitation of cobalt with manganese. These promising results allow a better understanding of cobalt hydroxide precipitation for a complete recovery from Li‐ion battery leachates.

中文翻译：

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温度对氢氧化钴沉淀从电池渗滤液中回收的影响

由于钴是能源和数字转型必不可少的战略金属，因此当前的研究工作集中在通过沉淀从锂离子电池中回收钴。模拟结果可以确定氢氧化钴沉淀条件，以实现钴的完全回收。实验结果表明温度对氢氧化钴沉淀动力学和粒度分布有很大影响。实际上，钴的回收率在25°C时是最佳的，产率接近100％。但是，模拟结果表明，必须注意选择的温度，以免钴与锰共沉淀。这些有希望的结果使人们能够更好地理解氢氧化钴的沉淀，以便从锂离子电池浸出液中完全回收。