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<p>In the current experiment, more importance has been laid upon optimisation of CNS nanoparticles with graphene oxide so as to increase the efficacy of the water splitting reaction. Preparation of CNS nanoparticles was carried out using a mixture of CNS and GO, and GO@CNS nanocomposites were analysed for their morphological characteristics via XRD, FE-SEM, and TEM techniques. BET analysis was carried out for GO@CNS and pore size and surface area were determined as 2.11&#xa0;nm and 50.665 m<sup>2</sup>/g, respectively. After carrying out electrochemical impedance spectroscopy on the GO@CNS material, the observed R<sub>ct</sub> values were 10.9Ω, indicating that the electrocatalyst is a good catalyst for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this case, a low overpotential value of 193 mV, with a Tafel slope of 51.55 mV/dec, was achieved for the HER reaction. Similarly, the material was observed to have an overpotential value of 140 mV, with a Tafel slope of 147 mV/dec, for the OER reaction.</p>

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Exploring the electrochemical behavior of graphene oxide supported copper nickel sulphide nano composite for water splitting applications

  • 期刊论文

  • 发表日期：

    2026年7月21日

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  • Shivalinga Suchithra,
  • Melajipura Basavaraju Kavyashree,
  • Arsikere Ramesh Anusha Gowda,
  • Kelasuru Vrushabendra Sandhya,
  • Nagarajappa Vidya,
  • Konanuru Narasimha Murthy Mukunda Murthy,
  • Madanahalli Ankanathappa Sangamesha,
  • Honnegowdanahalli Shivabasappa Nagendra Prasad

摘要

In the current experiment, more importance has been laid upon optimisation of CNS nanoparticles with graphene oxide so as to increase the efficacy of the water splitting reaction. Preparation of CNS nanoparticles was carried out using a mixture of CNS and GO, and GO@CNS nanocomposites were analysed for their morphological characteristics via XRD, FE-SEM, and TEM techniques. BET analysis was carried out for GO@CNS and pore size and surface area were determined as 2.11 nm and 50.665 m2/g, respectively. After carrying out electrochemical impedance spectroscopy on the GO@CNS material, the observed Rct values were 10.9Ω, indicating that the electrocatalyst is a good catalyst for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this case, a low overpotential value of 193 mV, with a Tafel slope of 51.55 mV/dec, was achieved for the HER reaction. Similarly, the material was observed to have an overpotential value of 140 mV, with a Tafel slope of 147 mV/dec, for the OER reaction.