Improved extraction of cobalt and lithium by reductive acid from spent lithium-ion batteries via mechanical activation process

文献类型： 外文期刊

第一作者： Guo, Yaoguang

作者： Guo, Yaoguang;Guan, Jie;Gao, Guilan;Yuan, Hao;Dai, Jue;Su, Ruijng;Li, Yaguang;Lou, Xiaoyi;Guan, Jie;Yuan, Hao;Li, Yingshun;Mai, Xianmin;Liu, Hu;Liu, Hu;Zhao, Cindy Xinxin;Guo, Zhanhu;Wang, Ning;Yan, Chao

作者机构：

期刊名称：JOURNAL OF MATERIALS SCIENCE （ 影响因子：4.22； 五年影响因子：3.69 ）

ISSN： 0022-2461

年卷期： 2018 年 53 卷 19 期

页码：

收录情况： SCI

摘要： Cobalt (Co) and lithium (Li) were extracted from pure LiCoO2 powders and actual cathode material powders from the spent lithium-ion batteries (LIBs) after l-ascorbic acid dissolution via a mechanical activation process. The influences of activation time and rotation speed on the leaching were discussed. The mechanism of the improved leaching yield was proposed based on the characterization analysis including X-ray diffraction, scanning electron microscope, BET-specific surface area and particle size analyzer. The reduced particle size, increased specific surface area of activated samples, destroyed crystal structure and amorphous state of LiCoO2 contributed to the improved leaching efficiencies of Co and Li. With the activated process, about 99% Co and 100% Li were extracted from actual spent LIBs after 60-min grinding at 500 rpm with mild conditions. This effective process would be of great importance for recovering valuable metals from the spent LIBs at room temperature.

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