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<p>Metal–organic frameworks (MOFs) with a porous structure are the most promising materials in the realm of energy storage. However, the electrochemical performance of pristine MOFs is limited by structural instability, which can be overcome by incorporating conductive graphene and polymer to form a composite material. In this study, we synthesized Zn-BTCA by a solvothermal method. The structural and morphological characteristics of MOF and the composite were analyzed using x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDX). The electrochemical properties were further tested in a three-electrode assembly. The specific capacity values obtained for Zn-BTCA and Zn-BTCA/PANI/NPG were 253.4 C/g and 479 C/g, respectively. The electrode with better performance was further utilized in hybrid devices. Specific capacity and maximum energy and power density values of 381.6 C/g, 84.8 Wh/kg, and 4000 W/kg, respectively, were obtained. The percentage capacitive and diffusive contributions were calculated using linear and quadratic models to estimate each electrode’s contribution. These results provide a pathway for developing advanced hybrid energy-storage devices.</p> Graphical Abstract <p></p>

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Solvothermal Synthesis and Electrochemical Performance of a Zn-BTCA Metal–Organic Framework and its PANI/Nanoporous Graphene Composite for Hybrid Energy-Storage Devices

  • 期刊论文

  • 发表日期：

    2026年7月28日

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  • Gehan Abdelrahman Hassan Hammouda,
  • Ebraheem Abdu Musad Saleh,
  • Kashif Mahmud,
  • Muhammad Zahir Iqbal,
  • Asmaa Fathy Abd El-Aziz Kassem,
  • Nusiba Mohammed Modawe Alshik,
  • Marwa Mostafa Moharam Haqqi Mohammed,
  • Heba A. El-Sabban

摘要

Metal–organic frameworks (MOFs) with a porous structure are the most promising materials in the realm of energy storage. However, the electrochemical performance of pristine MOFs is limited by structural instability, which can be overcome by incorporating conductive graphene and polymer to form a composite material. In this study, we synthesized Zn-BTCA by a solvothermal method. The structural and morphological characteristics of MOF and the composite were analyzed using x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDX). The electrochemical properties were further tested in a three-electrode assembly. The specific capacity values obtained for Zn-BTCA and Zn-BTCA/PANI/NPG were 253.4 C/g and 479 C/g, respectively. The electrode with better performance was further utilized in hybrid devices. Specific capacity and maximum energy and power density values of 381.6 C/g, 84.8 Wh/kg, and 4000 W/kg, respectively, were obtained. The percentage capacitive and diffusive contributions were calculated using linear and quadratic models to estimate each electrode’s contribution. These results provide a pathway for developing advanced hybrid energy-storage devices.

Graphical Abstract