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<p>The glass system xLi<sub>2</sub>S-10Bi<sub>2</sub>O<sub>3</sub>-20V<sub>2</sub>O<sub>5</sub>-(70-x)P<sub>2</sub>O<sub>5</sub> (with x ranging from 5 to 20&#xa0;mol%) was investigated using differential thermal analysis (DTA), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and electrochemical analysis to evaluate its possibilities as electrodes for supercapacitor applications. Using a variety of experimental examinations with three-electrode systems, the electrochemical characteristics of the created glasses were investigated. The synthesized glass with high Li<sub>2</sub>S content showed outstanding electrochemical characteristics, maintaining 97% of its capacitance after 1000 cycles and exhibiting a specific capacitance of 301.11&#xa0;F/g at a current density of 2&#xa0;A/g. These characteristics are attributed to both effective charge transfer across the electrode and current collection, as well as efficient transfer of ions across the electrolyte and activated electrode. These results can be attributed to the decrease in bridging oxygen (BO) with increasing Li<sub>2</sub>S content, as well as the partial replacement of sulfur atoms by oxygen atoms, which enlarges the transport pathways of ions. Additionally, the glass electrode with high Li<sub>2</sub>S content (20&#xa0;mol%) demonstrated a higher specific energy of 45.19 Wh/kg at a specific power of 500&#xa0;W/kg. Therefore, increasing the Li<sub>2</sub>S content in the prepared glasses could be a good way to improve the electrochemical performance of the supercapacitor.</p>

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Effect of lithium sulfide on the electrochemical performance of Li2S-Bi2O3-V2O5-P2O5 glass electrodes for supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • A. M. Al-Syadi,
  • Hasan B. Albargi,
  • M. Abaker,
  • R. Dhahri,
  • Elkenany Brens Elkenany

摘要

The glass system xLi2S-10Bi2O3-20V2O5-(70-x)P2O5 (with x ranging from 5 to 20 mol%) was investigated using differential thermal analysis (DTA), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and electrochemical analysis to evaluate its possibilities as electrodes for supercapacitor applications. Using a variety of experimental examinations with three-electrode systems, the electrochemical characteristics of the created glasses were investigated. The synthesized glass with high Li2S content showed outstanding electrochemical characteristics, maintaining 97% of its capacitance after 1000 cycles and exhibiting a specific capacitance of 301.11 F/g at a current density of 2 A/g. These characteristics are attributed to both effective charge transfer across the electrode and current collection, as well as efficient transfer of ions across the electrolyte and activated electrode. These results can be attributed to the decrease in bridging oxygen (BO) with increasing Li2S content, as well as the partial replacement of sulfur atoms by oxygen atoms, which enlarges the transport pathways of ions. Additionally, the glass electrode with high Li2S content (20 mol%) demonstrated a higher specific energy of 45.19 Wh/kg at a specific power of 500 W/kg. Therefore, increasing the Li2S content in the prepared glasses could be a good way to improve the electrochemical performance of the supercapacitor.