Evaluation of Cubic-Like Advanced ZnMn2O4 Electrode for High-Performance Supercapacitor Applications

In this work, a cubic-like ZnMn 2 O 4 nanostructure was prepared by a cost-effective double-hydroxide-mediated hydrothermal route. As-synthesized material was characterized by powder X-ray diffraction and Fourier-transform infrared spectroscopy studies. The cubic-like surface morphology of the mater...

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Bibliographic Details
Published in:Journal of electronic materials 2021-08, Vol.50 (8), p.4381-4387
Main Authors: Mani, M. Puratchi, Venkatachalam, V., Thamizharasan, K., Jothibas, M.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrodes
Electron microscopes
Electronics and Microelectronics
Fourier transforms
High resolution electron microscopy
Infrared spectroscopy
Instrumentation
Materials Science
Microscopy
Morphology
Optical and Electronic Materials
Original Research Article
Solid State Physics
Spectrum analysis
Supercapacitors
X ray powder diffraction
Zinc compounds
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Summary:In this work, a cubic-like ZnMn 2 O 4 nanostructure was prepared by a cost-effective double-hydroxide-mediated hydrothermal route. As-synthesized material was characterized by powder X-ray diffraction and Fourier-transform infrared spectroscopy studies. The cubic-like surface morphology of the material was viewed using scanning electron microscopy and high-resolution transmission electron microscopy analyses. The electrochemical properties of the ZnMn 2 O 4 electrode were examined by cyclic voltammetry, charge-discharge, and electrochemical impedance spectroscopy analyses. The electrochemical results revealed that the ZnMn 2 O 4 electrode had battery-type Faradic behavior with the highest capacitance of 776 F g −1 at a scan rate of 5 mV s −1 in a 2 M KOH electrolyte and showed good cyclic stability, with an efficiency of 91.7% after 5000 continuous long cycles. The synthesis method entails that the ZnM 2 O 4 electro-active material acts as a promising high-performance supercapacitor electrode.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-021-08962-0