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<p>CuO nanocomposites doped with different ratios of Co and Ni were synthesised using the electrodeposition method for the first time as potential candidates for supercapacitor electrodes. The effect of different doping levels on structural was studied using XRD and SEM, respectively. X-ray photoelectronic spectroscopy (XPS) study revealed the presence of Cu, Co and Ni ions in the nanocomposites. The magnetic properties resulting from different levels of Ni and Co doping into the CuO lattice were investigated using a vibrating sample magnetometer (VSM). Cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) results confirmed the pseudocapacitive nature of the prepared electrodes. Maximum specific capacitances of 1119 F/g at a current density of 2 A/g and 922.147 F/g at a scan rate of 5 mV/s were obtained for the Ni–Co/CuO electrode on Ni foam with a Ni/Co ratio of 2:4. These results indicate that Co- and Ni-doped CuO electrodes with optimal doping levels can be used as an excellent electrode for pseudocapacitors.</p>

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Electrochemical deposition of Co and Ni co-doped CuO on Ni foam as supercapacitor electrode

  • 期刊论文

  • 发表日期：

    2026年7月14日

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  • Mohammad Hadi Karimi Tafti,
  • Mahsa Fakharpour

摘要

CuO nanocomposites doped with different ratios of Co and Ni were synthesised using the electrodeposition method for the first time as potential candidates for supercapacitor electrodes. The effect of different doping levels on structural was studied using XRD and SEM, respectively. X-ray photoelectronic spectroscopy (XPS) study revealed the presence of Cu, Co and Ni ions in the nanocomposites. The magnetic properties resulting from different levels of Ni and Co doping into the CuO lattice were investigated using a vibrating sample magnetometer (VSM). Cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) results confirmed the pseudocapacitive nature of the prepared electrodes. Maximum specific capacitances of 1119 F/g at a current density of 2 A/g and 922.147 F/g at a scan rate of 5 mV/s were obtained for the Ni–Co/CuO electrode on Ni foam with a Ni/Co ratio of 2:4. These results indicate that Co- and Ni-doped CuO electrodes with optimal doping levels can be used as an excellent electrode for pseudocapacitors.