期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 379, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.120817
关键词
Spent lithium-ion batteries; LiCoO2; Li2CO3; Molten salt; Electrochemical reduction; Recycling
资金
- Fundamental Research Funds for the Central Universities [N172505002]
- NSFC [51704060]
- National Thousand Youth Talent Program of China
- 111 Project [B16009]
Recycling of the spent LIBs to extract Li and Co not only offers raw materials for batteries but also lays a sustainable way for battery development. Herein, we adopt a route combining hydrometallurgical and pyro-electrochemical routes to extract Li2CO3 and Co powder from the spent LIBs of cell phones. The LiCoO2-based cathode materials were firstly dissolved in H2SO4 solution containing H2O2 as the reductant, and the optimal conditions for attaining a high extraction rate of 99% were studied. After that, the precipitated Co(OH)(2) was calcinated in air under 500 degrees C to generate Co3O4 which was thereafter electrochemically converted into Co powder and oxygen in molten Na2CO3-K2CO3. Overall, the hybrid method employing both hydro- and pyro-route provides an effective pathway to recover both Li2CO3 and Co powder from spent LIBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据