Recycling of Cobalt by Liquid Leaching from Waste 18650-Type Lithium-Ion Batteries

• 作者: Bo Shu Liangmou Yu Shiwen Yao
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 化学
• 关键词: Component COBALT 18650-Type LITHIUM-ION Battery LEACHING ELECTRODEPOSITION
• 年，卷（期）: 2015,（4）
• 页码范围: 425-429
• 页数: 5页
• 分类号: O6

摘要

In this work, we recover cobalt from waste 18650-type lithiumion batteries by acid leaching. The cathode material is completely dissolved, after leaching waste batteries by using 10 mol/L industrial sulfuric acid at 70℃ for 1 h. The rate of cobalt leaching is nearly 100%. Removal of sodium carbonate, iron, aluminum and other impurities from the leaching solution was well performed by adjusting the pH to 2-3 with stirring vigorously. Finally, under the conditions of 55℃-60℃ of 240 A/m2 current density, electrodeposition current efficiency was 90.01%, the quality of the electrical output achieved cobalt 1A standard electrolytic cobalt, cobalt until greater than 90% yield. The process is easy and suitable for large-scale lithiumion batteries used in the recovery of valuable metals.