Investigation of the electrochemical behavior of ZIF-67 @ carbon nanotube and graphene oxide as potential electrode active materials for supercapacitors

Investigation of the electrochemical behavior of ZIF-67 @ carbon nanotube
and graphene oxide as potential electrode active materials for supercapacitors

A. Ghasemi Yeklangi^a, F. Rahimi^a, S. Akbari^a*

 ^aNanoSciTec GmbH, Hermann Weinhauser str. 67, Munich, 81867, Germany

 Abstract

Nanocomposites composed of zeolitic imidazole framework (ZIF) and carbon nanotube  (CNT) and graphene oxide (GO) have been synthesized by a simple ultrasonic method in atmospheric condition. Electrochemical techniques like cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy have been used for measuring electrochemical properties of samples using 6 M NaOH as electrolyte. Nanocomposite samples of ZIF-67 with CNT and GO showed high specific capacity of 248 F/g and 230 F/g, respectively. These values are much higher than that of absolute ZIF67 sample. In addition to pseudocapacitance behavior, the internal resistances of nanocomposite samples are less than ZIF-67 sample that shows the beneficial effect of added carbon materials.Keywords: Pseudocapacitance, Zeolitic Imidazole Framework, Carbon Nanotube, Graphene Oxide, Metal-Organic Framework.
© Article info: Accepted by: 2 December 2021, Published by: 16 December 2021.

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Investigation of the electrochemical behavior of ZIF-67 @ carbon nanotube and graphene oxide as potential electrode active materials for supercapacitors

doi number : https://doi.org/10.52319/j.nanoscitec.2021.8