Electrochemical Investigations of Magnetic Co{sub 3}O{sub 4} Nanoparticles as an Active Electrode for Supercapacitor Applications

Journal Article · Thu Aug 15 04:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4963-6· OSTI ID:22922967

Packiaraj, R.; Devendran, P.; Venkatesh, K. S.; Asath bahadur, S. ^[1]; Manikandan, A. ^[2]

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1. Department of Physics, Multifunctional materials laboratory, International Research Centre, Kalasalingam Academy of Research and Education (India)
2. Bharath University, Department of Chemistry, Bharath Institute of Higher Education and Research (BIHER) (India)

This attempt reports on cobalt oxide (Co{sub 3}O{sub 4}) nanoparticles (NPs) prepared through the traditional chemical reflux method to examine the behavior of supercapacitor performance. The synthesized NPs were characterized using several analytical tools such as ultraviolet-visible spectroscopy (UV), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) pattern, and scanning electron microscope (SEM) with energy dispersive X-ray spectroscopy (EDX). Moreover, the electrochemical performance was analyzed using galvanostatic charge and discharge studies (GCD), cyclic voltammetry (CV) studies as well as electrochemical impedance spectroscopy (EIS). The cubical phase of Co{sub 3}O{sub 4} was identified from the XRD pattern and also the average crystalline size was measured by Scherrer’s equation. FTIR confirmed the functional group of Co{sub 3}O{sub 4} NPs. SEM images revealed the hexagonal-shaped nanoflakes-like morphology of the sample. From the elemental analysis, the formation of pure Co{sub 3}O{sub 4} NPs by means of high purity and composition ratio of cobalt with oxygen was found. Vibrating sample magnetometer (VSM) plot scrutinized the magnetic performance of Co{sub 3}O{sub 4} NPs{sub .} The Co{sub 3}O{sub 4} NPs modified electrode has delivered maximum specific capacitance as 1413 Fg{sup −1} at a current density of 1 Ag{sup −1} which maintains tremendous cycling stability within the retention ratio of 98.4% after 1000 cycles. .

• OSTI ID: 22922967
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 8 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CAPACITANCE
CAPACITIVE ENERGY STORAGE EQUIPMENT
COBALT OXIDES
CURRENT DENSITY
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
INFRARED SPECTRA
NANOPARTICLES
SCANNING ELECTRON MICROSCOPY
VIBRATING SAMPLE MAGNETOMETERS
VOLTAMETRY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY