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<p>A binder-free bifunctional nickel electrocatalyst was successfully synthesized via a rapid, stirring-assisted electrodeposition technique using nickel concentrations of 1 mM (Niα<sub>1</sub>-CF), 3 mM (Niα<sub>3</sub>-CF), and 7 mM (Niα<sub>7</sub>-CF). The structural, chemical, and morphological characteristics of the electrodes were analyzed using FTIR spectroscopy, FE-SEM, and XRD. Electrochemical performance was evaluated through CV, GCD, EIS, and amperometric (i-t) techniques. Among the synthesized electrodes, Niα<sub>3</sub>-CF exhibited the highest performance, achieving a remarkable specific capacitance of 1851&#xa0;F/g at 1&#xa0;A/g, alongside energy and power densities of 2743 Wh/kg and 41.1&#xa0;W/kg, respectively. It also demonstrated exceptional cycling stability, retaining 98% of its capacitance after 8000 cycles. Furthermore, the Niα<sub>3</sub>-CF electrode displayed outstanding selectivity and sensitivity for glucose detection, with minimal interference from other species. Real-time analysis using human blood serum further validated its accuracy, showing a strong correlation with standard clinical measurements. These findings underscore the strong potential of the binder-free Niα<sub>3</sub>-CF electrode for high-performance SC and NEGS applications, paving the way for advanced energy storage and biosensing technologies.</p>

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Innovative Binder-Free Nickel-Coated Carbon Fiber Electrode for Supercapacitor and Non-enzymatic Glucose Sensor Applications

  • 期刊论文

  • 发表日期：

    2025年3月26日

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  • Samma Shakeel,
  • Ahtisham Abdul Wahid,
  • Muhammad Usman,
  • Yasir A. Haleem,
  • Arsalan Ahmed,
  • Munawar Hussain,
  • Muhammad Shahid khan,
  • Amjad Farid,
  • Muhammad Usman Munir,
  • Muhammad Owais Ameen

摘要

A binder-free bifunctional nickel electrocatalyst was successfully synthesized via a rapid, stirring-assisted electrodeposition technique using nickel concentrations of 1 mM (Niα1-CF), 3 mM (Niα3-CF), and 7 mM (Niα7-CF). The structural, chemical, and morphological characteristics of the electrodes were analyzed using FTIR spectroscopy, FE-SEM, and XRD. Electrochemical performance was evaluated through CV, GCD, EIS, and amperometric (i-t) techniques. Among the synthesized electrodes, Niα3-CF exhibited the highest performance, achieving a remarkable specific capacitance of 1851 F/g at 1 A/g, alongside energy and power densities of 2743 Wh/kg and 41.1 W/kg, respectively. It also demonstrated exceptional cycling stability, retaining 98% of its capacitance after 8000 cycles. Furthermore, the Niα3-CF electrode displayed outstanding selectivity and sensitivity for glucose detection, with minimal interference from other species. Real-time analysis using human blood serum further validated its accuracy, showing a strong correlation with standard clinical measurements. These findings underscore the strong potential of the binder-free Niα3-CF electrode for high-performance SC and NEGS applications, paving the way for advanced energy storage and biosensing technologies.