MIL-53(Al)/Bi2WO6 composite for asymmetric supercapacitor application

In this work, transition metal oxide (Bi 2 WO 6 ) and metal organic framework (MIL-53(Al)) were used to prepare a composite. The MIL-53(Al) and Bi 2 WO 6 powder were synthesized through hydrothermal route and the MIL-53(Al)/Bi 2 WO 6 composite was prepared through impregnation technique. FESEM-EDX,...

Full description

Saved in:
Bibliographic Details
Published in:Bulletin of materials science 2024-04, Vol.47 (2), p.72, Article 72
Main Authors: TOMAR, SNEHA, SINGH, V K
Format: Article
Language:English
Subjects:
Bismuth compounds
Carbon
Chemistry and Materials Science
Electrochemical impedance spectroscopy
Electrode materials
Electrodes
Electrolytes
Energy storage
Engineering
Materials Science
Metal oxides
Metal-organic frameworks
Microscopy
Morphology
Nitrates
Spectrum analysis
Supercapacitors
Transition metal oxides
Tungstates
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, transition metal oxide (Bi 2 WO 6 ) and metal organic framework (MIL-53(Al)) were used to prepare a composite. The MIL-53(Al) and Bi 2 WO 6 powder were synthesized through hydrothermal route and the MIL-53(Al)/Bi 2 WO 6 composite was prepared through impregnation technique. FESEM-EDX, XRD, FTIR and multi-point BET were used to characterize the MIL-53(Al), Bi 2 WO 6 and composite. Electrochemical study was performed by employing a potentiostat and a 3-electrode cell, where platinum wire taken as counter electrode, active material-coated graphitic carbon felt as the working electrode and Ag/AgCl taken as reference electrode. MIL-53(Al) and Bi 2 WO 6 were tested separately to determine the electrochemical efficiency, and it was found through galvanostatic charge–discharge method that they both have low energy densities when compared to the composite. The energy density of the composite was found to increase due to the characteristic changes resulting from the combination of MIL-53(Al) and Bi 2 WO 6 . Compared with the pristine MIL-53(Al) and Bi 2 WO 6 , the composite has exhibited higher specific capacitance of 554 F g −1 at 0.5 A g −1 and the lowest equivalent series resistance (ESR) resistance was obtained in electrochemical impedance spectroscopy study, which confirms that the MIL-53(Al)/Bi 2 WO 6 hybrid has improved its performance as electrode material for supercapacitor application.
ISSN:0973-7669
0250-4707
0973-7669
DOI:10.1007/s12034-023-03137-5