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<p>The chemical bath deposition (CBD) method has been employed to synthesize copper oxide (CuO) thin film electrodes for supercapacitor applications. The as-prepared CuO films were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy to investigate their structural, morphological and surface chemical properties. XRD analysis confirmed the formation of a monoclinic crystal structure with an average crystallite size of 30–35&#xa0;nm. The FE-SEM images revealed a quasi-spherical like morphology, suggesting enhanced surface area for electrochemical activity. Electrochemical measurements indicated admirable pseudo-capacitive behavior, with a specific capacitance of 565 F/g at a current density of 7 A/g from galvanostatic charge–discharge. The CuO electrode also demonstrates excellent cycling stability, retaining 92.8% of its initial capacitance after 6000 cycles. These results highlight the potential of CBD grown CuO thin films as low cost, high efficiency electrode materials designed for next-generation energy storage technologies exhibit superior charge storage capability, rapid ion transport properties, and excellent cycling durability.</p>

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Facile one-pot fabrication of quasi-spherical copper oxide electrode for supercapacitor

  • 期刊论文

  • 发表日期：

    2026年4月27日

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  • Rushikesh G. Bobade,
  • Shilpa Pande,
  • Navnath S. Padalkar,
  • Jong Pil Park,
  • Pradip B. Sarawade,
  • Shoyebmohamad F. Shaikh,
  • Raisuddin Ali,
  • Abu ul Hassan S. Rana,
  • Revanappa C. Ambare

摘要

The chemical bath deposition (CBD) method has been employed to synthesize copper oxide (CuO) thin film electrodes for supercapacitor applications. The as-prepared CuO films were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy to investigate their structural, morphological and surface chemical properties. XRD analysis confirmed the formation of a monoclinic crystal structure with an average crystallite size of 30–35 nm. The FE-SEM images revealed a quasi-spherical like morphology, suggesting enhanced surface area for electrochemical activity. Electrochemical measurements indicated admirable pseudo-capacitive behavior, with a specific capacitance of 565 F/g at a current density of 7 A/g from galvanostatic charge–discharge. The CuO electrode also demonstrates excellent cycling stability, retaining 92.8% of its initial capacitance after 6000 cycles. These results highlight the potential of CBD grown CuO thin films as low cost, high efficiency electrode materials designed for next-generation energy storage technologies exhibit superior charge storage capability, rapid ion transport properties, and excellent cycling durability.