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<p>In the present work, the synthesis of ZIF-67/PANI and ZIF-67/PPy composites, derived from polyaniline (PANI), polypyrrole (PPy), and ZIF-67 offers considerable potential in the application of supercapacitors. The synthesized ZIF-67/PANI and ZIF-67/PPy composites were characterized using X-ray Diffraction (XRD), Fourier-transform Infrared Spectroscopy (FTIR), Ultraviolet-Visible Spectroscopy (UV-Visible) and Field Emission Scanning Electron Microscopy (FESEM). The fabricated electrodes of ZIF-67/PANI and ZIF-67/PPy composites were studied under different KOH molarity solutions as electrolytes, via 2&#xa0;M, 4&#xa0;M, and 6&#xa0;M in an electrode system. The ZIF-67/PPy and ZIF-67/PANI composites exhibit effective results in a 6&#xa0;M KOH electrolyte solution, with specific capacitances of 417&#xa0;F g<sup>-1</sup> and 312&#xa0;F g<sup>-1</sup>, respectively, at a current density of 1.8&#xa0;A g<sup>-1</sup>. Additionally, Electrochemical Impedance Spectroscopy shows the least series resistance in 6&#xa0;M KOH solution compared to 2&#xa0;M and 4&#xa0;M KOH. The electrodes of a ZIF-67/PANI and ZIF-67/PPy composites Maintain their cyclic stability up to 96% and 84%, respectively, after 1000 cycles, compared to ZIF-67. The ZIF-67 composites demonstrate exceptional energy storage capabilities, which assist in developing energy storage devices and other electrochemical devices.</p> Graphical abstract <p></p>

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Comparative investigation of polyaniline and polypyrrole blending with ZIF-67 MOF: unravelling their influence on ZIF-67 supercapacitor performance

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • Vikas N. Kendre,
  • Vijaykiran N. Narwade,
  • Shubham S. Patil,
  • Kashinath A. Bogle,
  • Mohammed Shariq,
  • Meng-Lin Tsai,
  • Mahendra D. Shirsat

摘要

In the present work, the synthesis of ZIF-67/PANI and ZIF-67/PPy composites, derived from polyaniline (PANI), polypyrrole (PPy), and ZIF-67 offers considerable potential in the application of supercapacitors. The synthesized ZIF-67/PANI and ZIF-67/PPy composites were characterized using X-ray Diffraction (XRD), Fourier-transform Infrared Spectroscopy (FTIR), Ultraviolet-Visible Spectroscopy (UV-Visible) and Field Emission Scanning Electron Microscopy (FESEM). The fabricated electrodes of ZIF-67/PANI and ZIF-67/PPy composites were studied under different KOH molarity solutions as electrolytes, via 2 M, 4 M, and 6 M in an electrode system. The ZIF-67/PPy and ZIF-67/PANI composites exhibit effective results in a 6 M KOH electrolyte solution, with specific capacitances of 417 F g-1 and 312 F g-1, respectively, at a current density of 1.8 A g-1. Additionally, Electrochemical Impedance Spectroscopy shows the least series resistance in 6 M KOH solution compared to 2 M and 4 M KOH. The electrodes of a ZIF-67/PANI and ZIF-67/PPy composites Maintain their cyclic stability up to 96% and 84%, respectively, after 1000 cycles, compared to ZIF-67. The ZIF-67 composites demonstrate exceptional energy storage capabilities, which assist in developing energy storage devices and other electrochemical devices.

Graphical abstract