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<p>Developing sustainable and reliable energy storage systems is a primary challenge in the modern quest for uninterruptible electricity. Supercapacitors have become a leading solution because of their rapid charge–discharge rates, exceptional power density, and long-term stability. A key factor in their efficiency is the electrode design; in this research, a perovskite YbFeO<sub>3</sub> and reduced graphene oxide (rGO) nanohybrid was synthesized through a facile hydrothermal method. Physical analysis revealed a tetragonal morphology of YbFeO<sub>3</sub> successfully integrated onto rGO sheets, providing a significant Brunauer–Emmett–Teller (BET) surface area of 157&#xa0;m<sup>2</sup>&#xa0;g<sup>−1</sup>. When assessed electrochemically in a 3&#xa0;M KOH electrolyte, the YbFeO<sub>3</sub>/rGO nanohybrid exhibited superior performance due to the synergistic effects between metal oxide and carbonaceous framework. At a current density of 1&#xa0;A&#xa0;g<sup>−1</sup>, the electrode achieved a high specific capacitance (<i>C</i><sub>s</sub>) of 981&#xa0;F&#xa0;g<sup>−1</sup>, specific energy of 26&#xa0;Wh&#xa0;kg<sup>−1</sup>, and specific power of 112&#xa0;W&#xa0;kg<sup>−1</sup>. Furthermore, the YbFeO<sub>3</sub>/rGO demonstrated excellent electronic conductivity, with series resistance (<i>R</i><sub>s</sub>) of 1.18&#xa0;Ω, and maintained robust structural integrity over 5000 cycles. These exceptional properties, combined with its cost-effectiveness and durability, establish the YbFeO<sub>3</sub>/rGO nanocomposite as a highly capable candidate for next-generation supercapacitor applications.</p> Graphical Abstract <p></p>

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Design and Electrochemical Evaluation of YbFeO3/rGO Nanohybrid Synthesis via the Hydrothermal Method for Advanced Supercapacitor Electrode Materials

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Muhammad Waqas,
  • Muhammad Younis,
  • Humaira Zulfiqar,
  • Sidra Manzoor

摘要

Developing sustainable and reliable energy storage systems is a primary challenge in the modern quest for uninterruptible electricity. Supercapacitors have become a leading solution because of their rapid charge–discharge rates, exceptional power density, and long-term stability. A key factor in their efficiency is the electrode design; in this research, a perovskite YbFeO3 and reduced graphene oxide (rGO) nanohybrid was synthesized through a facile hydrothermal method. Physical analysis revealed a tetragonal morphology of YbFeO3 successfully integrated onto rGO sheets, providing a significant Brunauer–Emmett–Teller (BET) surface area of 157 m2 g−1. When assessed electrochemically in a 3 M KOH electrolyte, the YbFeO3/rGO nanohybrid exhibited superior performance due to the synergistic effects between metal oxide and carbonaceous framework. At a current density of 1 A g−1, the electrode achieved a high specific capacitance (Cs) of 981 F g−1, specific energy of 26 Wh kg−1, and specific power of 112 W kg−1. Furthermore, the YbFeO3/rGO demonstrated excellent electronic conductivity, with series resistance (Rs) of 1.18 Ω, and maintained robust structural integrity over 5000 cycles. These exceptional properties, combined with its cost-effectiveness and durability, establish the YbFeO3/rGO nanocomposite as a highly capable candidate for next-generation supercapacitor applications.

Graphical Abstract