期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 816, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.152604
关键词
Cobalt oxide; Preparation; Spent Li-ion battery; Leaching; Electrochemical performance
资金
- Shanghai Municipal Natural Science Foundation [18ZR1415700]
- Major Program of the National Natural Science Foundation of China [51590902]
- Guangxi Key Laboratory of Information Materials (GUET) [171011-K]
- SSPU [EGD18XQD26, EGD18YJ0049, EGD17YJ0005]
- Gaoyuan Discipline of ShanghaieEnvironmental Science and Engineering (Resource Recycling Science and Engineering)
- key subject of SSPU (No. 4: Material Science and Engineering) [XXKZD1601]
Lithium-ion batteries (LIBs) have been growing rapidly to meet the increasing commercial demand of electric vehicles and portable electronic devices. However, the extensive use of LIBs has also brought many environmental problems. Thus, the recycling and reuse of spent LIBs has attracted wide attention. Although, a lot of work has been done to recover scarce metals from the spent LIBs, the studies on the preparation of nanostructured cobalt oxide (Co3O4) materials by recycling the spent LIBs are rarely reported. Herein, the Co3O4 hollow microspheres were prepared using the leaching solution of the spent LIBs as cobalt source via a facile solvothermal method followed by a calcination process. The morphology and structure were characterized by different techniques. The results indicate that those Co3O4 hollow microspheres (Phi-1 mu m) possess numerous mesopores, which is favorable for the preparation of high performance supercapacitor electrode. The Co3O4 hollow microspheres exhibit relatively high specific capacitance (SC) and good stability. The excellent electrochemical properties should be attributed to the synergetic effect of hollow microstructure, large specific surface area and numerous mesopores. This study proved the feasibility to prepare Co3O4 nanostructures from the leaching solution of the spent LIBs, which is promising for industrial recovery and reuse of the spent LIBs. (C) 2019 Elsevier B.V. All rights reserved.
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