期刊
IONICS
卷 27, 期 10, 页码 4197-4204出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04225-4
关键词
LIBs; MOF-derived; Reduced graphene oxide; Nanocomposites; Solvothermal method
资金
- National Natural Science Foundation of China [21701083]
- Postgraduate Research and Practice Innovation Program of Jiangsu Province [KYCX20_3137]
- Project of Jiangsu University (High-Tech Ship) Collaborative Innovation Center (2019) [1174871801-11]
The Co3O4@rGO composite materials were prepared by a simple solvothermal method and heat treatment, showing excellent electrochemical properties, especially when the rGO proportion is 20%. This study provides insights into the preparation of other transition metal oxides by structure design with an rGO layer.
The Co3O4@rGO derived from metal-organic frameworks (MOFs) were prepared by a simple solvothermal method followed by the heat treatment. In a typical preparation process, the Co-MOF (ZIF-67) acts as the precursor to obtain desirable nano Co3O4 while the reduced graphene oxide (rGO) layer enhances the conductivity. The materials were respectively characterized by XRD, SEM, and then further electrochemical tests. As anode materials for lithium-ion batteries (LIBs), the material of Co3O4@rGO exhibit overall superb electrochemical properties especially when the rGO proportion is 20%, it displays higher capacity (818.5 mAh g(-1) at 100 mA g(-1)), higher cycling stability (87.3% capacity retention after 100 cycles), and better rate performance. The work may throw some lights on the preparation of other transition metal oxides by structure design with rGO layer for further applications.
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