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<p>This research explores the synthesis, characterization, and electrochemical performance of pure BiFeO<sub>3</sub> (Bismuth Ferrite Oxide–BFO) and tungsten-doped BiFeO<sub>3</sub> (BWFO) nanoparticle thin films prepared via electrodeposition for supercapacitor applications. BFO and BWFO thin films were synthesized by electrodepositing their respective precursor solutions onto stainless steel substrates, followed by annealing at 600&#xa0;°C for 4&#xa0;h. The doping of tungsten into BFO was achieved in situ using sodium tungsten. Both BFO and BWFO films were characterized for their electrochemical properties in three different electrolytes: 1&#xa0;M KOH, 1&#xa0;M NaOH, and 1&#xa0;M Na<sub>2</sub>SO<sub>3</sub>. The BWFO films exhibited significantly enhanced electrochemical performance compared to BFO films across all electrolytes. In 1&#xa0;M KOH, BWFO films demonstrated a maximum specific capacitance of 752.96 F/g at a scan rate of 2&#xa0;mV/s, which is higher than that of BFO films, which reached 99.67 F/g under similar conditions. Furthermore, BWFO films showed higher energy densities, achieving 98.05 W h/kg in 1&#xa0;M KOH, compared to 32.86 W h/kg for BFO. Power densities followed a similar trend, with BWFO films exhibiting a maximum of 0.2103 W/kg in 1&#xa0;M Na<sub>2</sub>SO<sub>3</sub> compared to 0.1784 W/kg for BFO. These results highlight the effectiveness of tungsten doping in improving the capacitive performance of BFO films, making them promising candidates for energy storage devices.</p>

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Tungsten-doped bismuth ferrite nanoparticle electrodes for energy storage application

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • Shivaji D. Waghmare,
  • Shankar P. Phulwale,
  • Shoyeb mohamad F. Shaikh,
  • Anant M. Gaikwad,
  • Amol S. Thosar,
  • Rushikesh G. Bobade,
  • Revanappa C. Ambare,
  • Pragati N. Thonge,
  • Suprimkumar D. Dhas

摘要

This research explores the synthesis, characterization, and electrochemical performance of pure BiFeO3 (Bismuth Ferrite Oxide–BFO) and tungsten-doped BiFeO3 (BWFO) nanoparticle thin films prepared via electrodeposition for supercapacitor applications. BFO and BWFO thin films were synthesized by electrodepositing their respective precursor solutions onto stainless steel substrates, followed by annealing at 600 °C for 4 h. The doping of tungsten into BFO was achieved in situ using sodium tungsten. Both BFO and BWFO films were characterized for their electrochemical properties in three different electrolytes: 1 M KOH, 1 M NaOH, and 1 M Na2SO3. The BWFO films exhibited significantly enhanced electrochemical performance compared to BFO films across all electrolytes. In 1 M KOH, BWFO films demonstrated a maximum specific capacitance of 752.96 F/g at a scan rate of 2 mV/s, which is higher than that of BFO films, which reached 99.67 F/g under similar conditions. Furthermore, BWFO films showed higher energy densities, achieving 98.05 W h/kg in 1 M KOH, compared to 32.86 W h/kg for BFO. Power densities followed a similar trend, with BWFO films exhibiting a maximum of 0.2103 W/kg in 1 M Na2SO3 compared to 0.1784 W/kg for BFO. These results highlight the effectiveness of tungsten doping in improving the capacitive performance of BFO films, making them promising candidates for energy storage devices.