ZnFe2O4 Nanoparticles Supported on Graphene Nanosheets for High-Performance Supercapacitor

The present work includes the synthesis and characterization of zinc ferrite (ZnFe 2 O 4 ) / graphene nanosheets composite as electrodes for supercapacitor application. The structural properties were studied using x-ray diffraction and Raman spectroscopy. The synthesized electrode was further analyz...

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Bibliographic Details
Published in:Journal of electronic materials 2023-04, Vol.52 (4), p.2676-2684
Main Authors: Lakra, Rajan, Mahender, C., Singh, Balwant Kr, Kumar, Rahul, Kumar, Sandeep, Sahoo, Prasanta Kumar, Thatoi, Dhirendranath, Soam, Ankur
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Efficiency
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrodes
Electronics and Microelectronics
Energy
Graphene
Instrumentation
Materials Science
Metal oxides
Morphology
Nanocomposites
Nanoparticles
Nanosheets
Optical and Electronic Materials
Original Research Article
Oxidation
Polyvinyl alcohol
Raman spectroscopy
Scanning electron microscopy
Solid State Physics
Supercapacitors
Voltammetry
Zinc ferrites
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Summary:The present work includes the synthesis and characterization of zinc ferrite (ZnFe 2 O 4 ) / graphene nanosheets composite as electrodes for supercapacitor application. The structural properties were studied using x-ray diffraction and Raman spectroscopy. The synthesized electrode was further analyzed with scanning electron microscopy (SEM) and transmission electron microscopy for surface morphology, which confirm the particle adherences between ZnFe 2 O 4 nanoparticles and graphene nano-sheets. The SEM images also confirmed a highly porous structure leading to excellent ion transportability, and a larger surface area for high amounts of charge storage. The device performance of the ZnFe 2 O 4 / graphene nanosheets as electrodes was tested via electrochemical analysis, cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. The device exhibited excellent capacitive performance with a specific capacitance of 789.2 Fg −1 calculated at a 5-mV/s −1 scan rate.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-023-10230-2