Energy Storage Applications of Cobalt and Manganese Metal–Organic Frameworks

Abstract

This work highlights the electrochemical properties of as-synthesized cobalt and manganese metal-organic frameworks. The electrochemical redox behavior of Co-MOF and Mn-MOF electrode was investigated in 0.1 M KOH solution by cyclic voltammetry. The rectangular CV curve obtained by the Mn-MOF electrode implies the pseudocapacitor act from the surface redox reaction of Mn. Well separated oxidation and reduction peaks achieved by the Co-MOF electrode implied the battery like behavior. For battery, the charge is represented as the capacity and the calculated capacity for the Co-MOF was 1064.3 mhAg −1 at 0.1 Ag −1 . For pseudocapacitor, capacitance should be used, and achieved capacitance by Mn-MOF electrode was 483 Fg −1 at constant current density 1 Ag −1 . With this delineation in mind, it should be clear that Co-MOF is suitable for battery purpose and Mn-MOF is suitable for pseudocapacitor application.

A Short Review on Synthesis and Applications of Zinc Based Metal Organic Frameworks

“…They concluded with the help of the obtained results and electrochemical behaviour of the ZnMOF/ETH500/nafion modified GCE that these MOFs can have a promising future as electrode materials for direct electrochemical sensing. Sangeetha S. Patel, G. Krishnamurthy and Sabine Foro [52,53] reported synthesis, crystal structure and electrochemical energy storage for some chelated Zn-metal-organic frameworks. They synthesized the chelated Zn-EDTA metalorganic framework (Zn-MOF) by an eco-friendly hydrothermal route at 160 °C and this product was confirmed by ATRIR, SEM, SXRD, TGA, and BET techniques.…”

Self-Assembly of Ni-Doped Co-MOF Spherical Shell Electrode for a High-Performance Supercapacitor

“…Metal–organic framework (MOF) materials, as porous materials, have important applications in hydrogen storage, gas adsorption and separation, catalytic reactions, and other fields that benefit from their large surface area, easy porous structure adjustment, and controllable morphology. − MOF materials have gradually been used as electrodes in energy storage devices like lithium ion, − sodium ion, − and lithium–sulfur batteries. ,− Their large specific surface area and ease of adjusting pore size and morphology make them popular in supercapacitor research. Generally, the majority of MOF electrode materials used in supercapacitors are concentrated on Co-MOFs, Zn-MOFs, and Ni-MOFs .…”