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Updated: Sep 23, 2025
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Enhanced electrochemical properties of cerium metal-organic framework based composite electrodes for high-performance
Rajendran Ramachandran1,2, Wenlu Xuan1, Changhui Zhao1,2
1Department of Electronic and Electrical Engineering, Southern University of Science and Technology Shenzhen 518055 China wangf@sustc.edu.cn.
Abstract:
Cerium metal-organic framework based composites (Ce-MOF/GO and Ce-MOF/CNT) were synthesized by a wet chemical route and characterized with different techniques to characterize their crystal nature, morphology, functional groups, and porosity. The obtained Ce-MOF in the composites exhibit a nanorod structure with a size of ∼150 nm. The electrochemical performance of the composites was investigated in 3 M KOH and 3 M KOH + 0.2 M K3Fe(CN)6 electrolytes. Enhanced electrochemical behavior was obtained for the Ce-MOF/GO composite in both electrolytes and exhibited a maximum specific capacitance of 2221.2 F g-1 with an energy density of 111.05 W h kg-1 at a current density of 1 A g-1. The large mesoporous structure and the presence of oxygen functional groups in Ce-MOF/GO could facilitate ion transport in the electrode/electrolyte interface, and the results suggested that the Ce-MOF/GO composite could be used as a high-performance supercapacitor electrode material.
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