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<p>This paper presents the synthesis of Fe<sub>2</sub>O<sub>3</sub>-embedded carbon (Fe<sub>2</sub>O<sub>3</sub>@C) for supercapacitors. The pyrolysis of Fe-based metal–organic framework (MOF) at varying temperatures (400–700&#xa0;°C) yields highly conductive carbon, a storage material of Fe<sub>2</sub>O<sub>3</sub>@C. The carbonization temperature markedly influenced the morphology, structure, and electrochemical characteristics of the Fe<sub>2</sub>O<sub>3</sub>@C electrodes. The Fe<sub>2</sub>O<sub>3</sub>@C electrode synthesized at 700&#xa0;°C demonstrated the specific capacitance of 1087 F/g (302.0&#xa0;mAh/g) at a current density of 1 A/g. The Fe<sub>2</sub>O<sub>3</sub>@C electrode demonstrated remarkable cyclic stability, with only &lt; 5% drop in capacitance after recycling for 5000 cycles, maintaining 98.2% of its performance. Our findings revealed that the Fe<sub>2</sub>O<sub>3</sub>@C electrode synthesized at 700&#xa0;°C had significant potential for supercapacitor applications.</p>

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Ferric Oxide@Carbon-Derived from Fe-MOF for Supercapacitor

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Sherief A. Al Kiey,
  • Faisal K. Algethami,
  • Hani Nasser Abdelhamid

摘要

This paper presents the synthesis of Fe2O3-embedded carbon (Fe2O3@C) for supercapacitors. The pyrolysis of Fe-based metal–organic framework (MOF) at varying temperatures (400–700 °C) yields highly conductive carbon, a storage material of Fe2O3@C. The carbonization temperature markedly influenced the morphology, structure, and electrochemical characteristics of the Fe2O3@C electrodes. The Fe2O3@C electrode synthesized at 700 °C demonstrated the specific capacitance of 1087 F/g (302.0 mAh/g) at a current density of 1 A/g. The Fe2O3@C electrode demonstrated remarkable cyclic stability, with only < 5% drop in capacitance after recycling for 5000 cycles, maintaining 98.2% of its performance. Our findings revealed that the Fe2O3@C electrode synthesized at 700 °C had significant potential for supercapacitor applications.