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<p>Post-synthetic modification of MOFs refers to the chemical derivatization of MOFs after their synthesis. Incorporating additional metal ions into the framework is an alternative approach to performing post-synthetic modification, which can expand the interlayer spacing in the MOF structure, provide sufficient spaces for the diffusion of electrolyte ions, and also act as a supporting column to hinder crystal collapse during recording cycles. It enhances the conductivity of MOFs, which improves the transport of electrons and ions, resulting in a significant electrochemical performance. In this work, the post-modification of the synthesized UiO-type MOFs is done in two steps, including a functionalization step and complexation with Cu<sup>2+</sup> ions. The resulting Cu-Modified MOF is used for the first time as an electroactive material to fabricate a flexible supercapacitor electrode (Cu-Modified MOF/CF (carbon felt)). This electrode exhibits the highest specific capacitance (C<sub>SP</sub>) of 302.25&#xa0;F. g<sup>− 1</sup> at ʋ = 0.005&#xa0;V. s<sup>− 1</sup>. Post-synthetic modification enhances the electrochemical behavior, resulting in a C<sub>SP</sub> value 6.72 times higher than that of the MOF. Based on the results, post-synthesis modification of MOFs can lead to the fabrication of different types of MOF materials, which will have a prominent impact on the future of these important materials.</p>

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Post-synthetic modification of UiO-type metal–organic framework with Cu2+ ions toward fabrication of flexible supercapacitor electrode

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月10日

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  • Hamideh Mohammadian-Sarcheshmeh,
  • Mohammad Mazloum-Ardakani,
  • Mohammad Abdollahi-Alibeik,
  • Ardalan Sarrafnia

摘要

Post-synthetic modification of MOFs refers to the chemical derivatization of MOFs after their synthesis. Incorporating additional metal ions into the framework is an alternative approach to performing post-synthetic modification, which can expand the interlayer spacing in the MOF structure, provide sufficient spaces for the diffusion of electrolyte ions, and also act as a supporting column to hinder crystal collapse during recording cycles. It enhances the conductivity of MOFs, which improves the transport of electrons and ions, resulting in a significant electrochemical performance. In this work, the post-modification of the synthesized UiO-type MOFs is done in two steps, including a functionalization step and complexation with Cu2+ ions. The resulting Cu-Modified MOF is used for the first time as an electroactive material to fabricate a flexible supercapacitor electrode (Cu-Modified MOF/CF (carbon felt)). This electrode exhibits the highest specific capacitance (CSP) of 302.25 F. g− 1 at ʋ = 0.005 V. s− 1. Post-synthetic modification enhances the electrochemical behavior, resulting in a CSP value 6.72 times higher than that of the MOF. Based on the results, post-synthesis modification of MOFs can lead to the fabrication of different types of MOF materials, which will have a prominent impact on the future of these important materials.