Journal
JOURNAL OF POWER SOURCES
Volume 538, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2022.231588
Keywords
Metal-organic frameworks; Polyaniline nanotubes; Supercapacitor; Graphene flakes; Composite
Funding
- Ferdowsi University of Mashhad, Iran [3/52786]
- Iranian National Science Foundation: INSF [99022290]
Ask authors/readers for more resources
This study reports the preparation of a Graphene@ZIF-67/polyaniline nanotube (PANI-NT) composite using stirring and sonication at room temperature. The composite exhibits high specific surface area and specific capacitance, as well as good reversibility and cyclic stability.
Metal-organic frameworks (MOFs) have been given more significant consideration in energy storage systems due to their high specific surface areas, mesoporous structures, and numerous reaction sites. To introduce additional conductive pathways and facilitate fast charge transfer, MOFs can be integrated with suitable conducting agents. In this study, we report the preparation of a novel Graphene@ZIF-67/polyaniline nanotube (PANI-NT) composite by using an easy stirring and sonication approach at room temperature. ZIF-67 rhombic dodecahedron structures are interconnected through PANI-NTs and deposited on the graphene flakes. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analysis have confirmed such individual morphology. This composite by the high surface area of 961.53 m2 g-1 exhibits a high specific capacitance of 20416.70 mF g-1 at a current density of 0.05 mA cm-2. This is due to a quick permeation of ions, easy forwarding of electrons, and excellent cooperation between the ingredients of the composite that result in reversible redox interactions. Moreover, the electrode material possesses 75% specific capacitance retention after 3000 cycles indicate good reversibility and cyclic stableness. The prepared Graphene@ZIF-67/PANI-NT composite can render outstanding electrochemical performance and is properly candidate for supercapacitors application.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available