High-power density electrode for supercapacitor applications: bismuth trioxide resolsinol formaldehyde xerogel

Korkmaz S., Kariper S. E. B., KARİPER İ. A.

Scientific Reports, cilt.15, sa.1, 2025 (SCI-Expanded, Scopus) identifier identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 1
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1038/s41598-025-24454-1
  • Dergi Adı: Scientific Reports
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, MEDLINE, Directory of Open Access Journals
  • Anahtar Kelimeler: Xerogel, Bismuth oxide, Supercapacitor, Energy density, Power density
  • Erciyes Üniversitesi Adresli: Evet

Özet

The primary aim of this research is to develop a high-performance, environmentally friendly, and cost-effective supercapacitor electrode material. By enriching Resorcinol–Formaldehyde (RF) xerogel with bismuth trioxide (Bi₂O₃), the study aims to design an innovative electrode with high specific capacitance and rapid charge/discharge capability. X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR) analyses confirmed the successful synthesis of the Bi₂O₃/RF xerogel structure. Electrochemical performance, evaluated through cyclic voltammetry (CV) tests, demonstrated that the 10% Bi₂O₃/RF xerogel achieved a maximum specific capacitance of 45.2 F g⁻1 and an energy density of 25.2 Wh kg⁻1 at a current density of 0.1 A g⁻1. Furthermore, the 5% Bi-doped xerogel exhibited a power density of 613.9 W kg⁻1 at a current density of 0.5 A g⁻1. These results reveal a remarkable combination of high energy and power densities compared to xerogel-based supercapacitors with different dopants, highlighting the material’s strong potential for advanced energy storage applications.