Issue 12, 2022

Controlled synthesis of a cobalt-organic framework: hierarchical micro/nanospheres for high-performance supercapacitors

Abstract

The integration of metal–organic frameworks (MOFs) and hierarchical micro/nanostructures has attracted great interest because of their potential in energy-related applications. Herein, we present a strategy to synthesize Co-MOF-based hierarchical micro/nanospheres (Co-MOF/M1, Co-MOF/M2, and Co-MOF/M3) with ultrathin nanosheet subunits by adjusting the content of the cobalt chloride precursor and the pyridine-3,5-dicarboxylic acid ligand. These micro/nanospheres feature a 3D architecture with exposed active sites and abundant channels for fast electron and electrolyte transport, which is suitable for supercapacitor applications. The optimized sample Co-MOF/M2 exhibits a high specific capacitance (430 F g−1 at 0.5 A g−1) and excellent rate performance (92.4% capacitance retention at a current density of 5 A g−1).

Graphical abstract: Controlled synthesis of a cobalt-organic framework: hierarchical micro/nanospheres for high-performance supercapacitors

Supplementary files

Article information

Article type
Research Article
Submitted
28 फरवरी 2022
Accepted
18 अप्रैल 2022
First published
19 अप्रैल 2022

Inorg. Chem. Front., 2022,9, 2845-2851

Controlled synthesis of a cobalt-organic framework: hierarchical micro/nanospheres for high-performance supercapacitors

X. Hang, Y. Xue, M. Du, R. Yang, J. Zhao and H. Pang, Inorg. Chem. Front., 2022, 9, 2845 DOI: 10.1039/D2QI00453D

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