Data sets for spectrums and chronoamperometry of cobalt-nickel alloys and inorganic compounds recovered from spent lithium ion battery cathodes using electrowinning and sodium-based precipitation

The demand for lithium-ion batteries (Li-ionBs) has surged, with a projected market value of $116 billion by 2030. However, only 5% of spent Li-ionBs are currently recycled due to the high costs, energy consumption, and environmental risks of existing recycling methods. This study focuses on developing an efficient, eco-friendly process to recover valuable metals like lithium (Li), cobalt (Co), nickel (Ni), and manganese (Mn) from Li-ionB waste, specifically targeting NMC 532 cathodes.Key innovations include using potentiostatic electrowinning with rotating cathodes and Pt-coated Ti anodes to selectively recover high-purity Ni-Co alloys (99% pure) , avoiding traditional, energy-intensive hydrometallurgical steps. Optimized leaching achieved recovery efficiencies of ~98.9% for Li, ~97.1% for Co, ~96.9% for Ni, and ~95.7% for Mn. Subsequent multi-stage precipitation recovered Ni, Co, Mn, and Li in various forms, lithium carbonate (Li₂CO₃, 99 % pure), manganese hydroxide (Mn(OH)₂, 99 % pure), and 0.6[Ni(OH)2].0.3[Mn(OH)2].0.1[Co(OH)2] (99 % pure). The spectra and chronoamperometry of the recovered materials are presented in the presented data sets.

锂离子电池（Li-ionBs）的需求激增，预计到2030年市场价值将达到1160亿美元。然而，由于现有回收方法成本高昂、能耗巨大以及环境风险，目前仅有5%的废旧锂离子电池得到回收。本研究致力于开发一种高效、环保的工艺，从锂离子电池废料中回收有价值的金属，如锂（Li）、钴（Co）、镍（Ni）和锰（Mn），特别是针对NMC 532正极材料。关键创新点包括采用旋转阴极和Pt涂层钛阳极的恒电位电解提金技术，以选择性地回收高纯度镍钴合金（99%纯度），从而避免传统、能耗密集的湿法冶金步骤。优化的浸出技术实现了锂（Li）的回收效率约为98.9%，钴（Co）约为97.1%，镍（Ni）约为96.9%，锰（Mn）约为95.7%。随后通过多阶段沉淀法，将镍、钴、锰和锂以不同形式回收，包括碳酸锂（Li₂CO₃，99%纯度）、氢氧化锰（Mn(OH)₂，99%纯度）以及0.6[Ni(OH)₂].0.3[Mn(OH)₂].0.1[Co(OH)₂]（99%纯度）。所回收材料的谱图和计时电流法数据在所提供的数据集中呈现。