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ZnFe2O4 Nanoparticles Supported on Graphene Nanosheets for High-Performance Supercapacitor

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Abstract

The present work includes the synthesis and characterization of zinc ferrite (ZnFe2O4)/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 ZnFe2O4 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 ZnFe2O4/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.

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Acknowledgments

One of the authors, Rajan Lakra would like to thank Ministry of Tribal Affair/ UGC, New Delhi, India for proving scholarship to conduct the research.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Siksha ‘O’ Anusandhan, Deemed to be University, Bhubaneswar, India

    Rajan Lakra, Prasanta Kumar Sahoo, Dhirendranath Thatoi & Ankur Soam

  2. Srichaitanya Educational Institutions, Karimnagar, India

    C. Mahender

  3. Centre for Advanced Materials Research, University of Texas at El Paso, El Paso, USA

    Balwant Kr Singh

  4. Thapar Institute of Engineering and Technology, Deemed to be University, Patiala, India

    Rahul Kumar

  5. Department of Electromechanical, Systems and Metal Engineering and Center for Molecular Modeling (CMM), Ghent University, Ghent, Belgium

    Sandeep Kumar

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  1. Rajan Lakra
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Lakra, R., Mahender, C., Singh, B.K. et al. ZnFe2O4 Nanoparticles Supported on Graphene Nanosheets for High-Performance Supercapacitor. J. Electron. Mater. 52, 2676–2684 (2023). https://doi.org/10.1007/s11664-023-10230-2

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