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<p>In this work, pure and various concentrations of cadmium substituted cobalt oxide (Cd-Co<sub>3</sub>O<sub>4</sub>) nanoparticles were synthesized by using a simple co-precipitation method. The influence of Cd concentrations had control over the Co<sub>3</sub>O<sub>4</sub> nanoparticles. The XRD analysis showed the prepared nanoparticles were cubic structure and calculated crystallite size decreased with increasing Cd concentrations. FTIR spectra affirmed the presence of characteristic bands detected at below 1000&#xa0;cm<sup>−1</sup>. The morphological studies exhibited the Cd substituted Co<sub>3</sub>O<sub>4</sub> nanoparticles showed a spherical-like structures. EDS mapping confirmed the existence of the elements like cobalt, cadmium, and oxygen. The surface area of Cd substituted Co<sub>3</sub>O<sub>4</sub> nanoparticles was studied by BET analysis and found to be 173&#xa0;m<sup>2</sup>/g. The CV results revealed that the Cd substituted Co<sub>3</sub>O<sub>4</sub> electrodes confirmed the pseudocapacitive nature and specific capacitance value of the 2% Cd substituted Co<sub>3</sub>O<sub>4</sub> electrode (775&#xa0;F/g) was higher than that of the pure Co<sub>3</sub>O<sub>4</sub> electrode (481&#xa0;F/g).</p>

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Investigation on physiochemical and electrochemical properties of Cd substituted Co3O4 nanoparticles for supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • R. Sakthi Murugan,
  • Sukti Subhankar Debata,
  • Pitchai Sali Mohamed Hajasharif,
  • A. Murugan,
  • M. Shanmugam,
  • S. Udhayan

摘要

In this work, pure and various concentrations of cadmium substituted cobalt oxide (Cd-Co3O4) nanoparticles were synthesized by using a simple co-precipitation method. The influence of Cd concentrations had control over the Co3O4 nanoparticles. The XRD analysis showed the prepared nanoparticles were cubic structure and calculated crystallite size decreased with increasing Cd concentrations. FTIR spectra affirmed the presence of characteristic bands detected at below 1000 cm−1. The morphological studies exhibited the Cd substituted Co3O4 nanoparticles showed a spherical-like structures. EDS mapping confirmed the existence of the elements like cobalt, cadmium, and oxygen. The surface area of Cd substituted Co3O4 nanoparticles was studied by BET analysis and found to be 173 m2/g. The CV results revealed that the Cd substituted Co3O4 electrodes confirmed the pseudocapacitive nature and specific capacitance value of the 2% Cd substituted Co3O4 electrode (775 F/g) was higher than that of the pure Co3O4 electrode (481 F/g).