Cobalt and copper-based metal-organic frameworks synthesis and their supercapacitor application

Original scientific paper


  • Sneha Tomar Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, Chhattisgarh, 492001, India
  • Vinod Kumar Singh Department of Chemical Engineering, National Institute of Technology Raipur Chhattisgarh India



Solvothermal synthesis, benzene dicarboxylic acid ligand, energy storage, specific capacitance
Graphical Abstract


In this study, two different metal-organic frameworks (MOFs) were synthesized using copper and cobalt metal ions with benzenedicarboxylic acid (bdc) as a common ligand. The prepared MOFs were characterized using X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy-energy dispersive spectroscopy. Also, the electrochemical characteristics were analyzed using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy methods. Structural characterizations indicate that Co-bdc MOF is composed of three-dimensional non-uniform colloids and Cu-bdc MOF has a regular three-dimensional cuboidal structure, possessing good crystalline structure. The Cu-bdc MOF exhibited a maximum specific capacitance of 171 F/g, while Co-bdc MOF showed 368 F/g at the current density of 1 A/g. The solution resistance for the Co-bdc MOF was 0.09 Ω in comparison to 1.25 Ω for the Cu-bdc MOF. Also, the Co-bdc MOF demonstrated better cycling performance by retaining 85 % of its capacity after 2000 charge-discharge cycles. In contrast, the stability of the Cu-bdc MOF was lower, with only 78 % retention in capacity. Conclusively, the Co-bdc MOF demonstrated superior specific capacitance, lower resistance, and enhanced cyclic stability in 3 M KOH electrolyte system.


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11-02-2024 — Updated on 11-02-2024

How to Cite

Tomar, S., & Singh, V. K. (2024). Cobalt and copper-based metal-organic frameworks synthesis and their supercapacitor application: Original scientific paper. Journal of Electrochemical Science and Engineering, 14(2), 163–175.



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