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Sol–Gel synthesis of Co3O4 nanoparticles as an electrode material for supercapacitor applications

  • Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)
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Abstract

Cobalt Oxide (Co3O4) nanoparticles were synthesized with an aid of urea by sol–gel method. The results of X-ray diffraction revealed that the formation of face-centered cubic (Fd3m) structure and the average crystallite size of the product were found to be 13.76 nm. The formation of cobalt oxide is confirmed by FT-IR analysis. The results of HR-TEM images reveal that Co3O4 nanoparticles were found to have within the range of 13–15 nm. At 3 M KOH, electrochemical analyses were investigated with impedance spectroscopy and an intrinsic pseudo capacitance and the results were reported. The results of Galvanostatic charge-discharge (GCD) tests revealed the capacitive properties of Co3O4 with the highest specific capacitance of 761.25 F g−1.

Highlights

  • The specific capacitance of Co3O4 nanoparticles was found to be 761.25 F g−1 at 11 mA/cm2 current density.

  • The Co3O4 nanoparticles were synthesized by a simple sol–gel method.

  • The crystallite size of Co3O4 nanoparticles was found to be 13.76 nm.

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Acknowledgements

I would like to thank Sophisticated Test and Instrumentation Centre, Cochin for extending their instrumental technical support of XRD facility and for recording HR-TEM images.

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Authors and Affiliations

  1. Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India

    C. Indira Priyadharsini, G. Marimuthu, T. Pazhanivel & P. M. Anbarasan

  2. Muthayammal College of Arts & Science, Rasipuram, Namakkal, 637408, Tamil Nadu, India

    C. Indira Priyadharsini & L. Mohana

  3. Center for Research and Development, Mahendra Engineering College, Mallasamudiram, Namakkal, 637 503, Tamil Nadu, India

    V. Aroulmoji

  4. Department of Physics, Condensed Matter Physics Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil, 626 126, Tamil Nadu, India

    V. Siva

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  1. C. Indira Priyadharsini
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Correspondence to P. M. Anbarasan.

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Priyadharsini, C.I., Marimuthu, G., Pazhanivel, T. et al. Sol–Gel synthesis of Co3O4 nanoparticles as an electrode material for supercapacitor applications. J Sol-Gel Sci Technol 96, 416–422 (2020). https://doi.org/10.1007/s10971-020-05393-x

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  • DOI: https://doi.org/10.1007/s10971-020-05393-x

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