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MOF-derived Co3O4@rGO nanocomposites as anodes for high-performance lithium-ion batteries

MOF-derived Co3O4@rGO nanocomposites as anodes for high-performance lithium-ion batteries 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.Graphical abstract[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

MOF-derived Co3O4@rGO nanocomposites as anodes for high-performance lithium-ion batteries

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References (52)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-021-04225-4
Publisher site
See Article on Publisher Site

Abstract

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.Graphical abstract[graphic not available: see fulltext]

Journal

Ionics – Springer Journals

Published: Oct 1, 2021

Keywords: LIBs; MOF-derived; Reduced graphene oxide; Nanocomposites; Solvothermal method

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