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<p>Improvements in efficient electrode materials are crucial for improving the performance of electrochemical supercapacitors. This study integrated zirconium dioxide (ZrO<sub>2</sub>) with a melamine-based covalent organic framework (COF, denoted as MATFB) to develop hybrid electrode materials for energy storage applications. Two sources of ZrO<sub>2</sub> were analyzed: commercial ZrO<sub>2</sub> and ZrO<sub>2</sub> obtained from the Zr-based metal-organic framework (MOF), i.e., UiO-66. The resulting composites were carbonized at 400, 600, and 800&#xa0;°C to produce porous ZrO<sub>2</sub>/C@COF materials with enhanced electrochemical properties. The electrochemical performance was evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCDC), and kinetic analysis employing the b-value and Dunn techniques. The ZrO<sub>2</sub>@MATFB composite demonstrated an exceptional specific capacitance of around 306&#xa0;F/g at 1&#xa0;A/g, significantly exceeding that of MATFB (81&#xa0;F/g) and UiO-66@MATFB (174&#xa0;F/g). Carbonized composites demonstrated enhanced performance, with UiO-66@MATFB_600 offering specific capacitance of 199&#xa0;F/g and ZrO<sub>2</sub>@MATFB_800 achieving around 191&#xa0;F/g at 1&#xa0;A/g. Kinetic analysis revealed b-values between 0.69 and 0.87, signifying a hybrid charge-storage mechanism that combines surface-capacitive activity with diffusion-controlled processes. The findings suggest that ZrO<sub>2</sub>/MATFB-derived carbon composites are promising candidates for high-performance supercapacitor electrodes.</p>

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MOF-Derived ZrO 2/COF/Carbon Composites for High-Performance Supercapacitor

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月18日

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  • Hani Nasser Abdelhamid

摘要

Improvements in efficient electrode materials are crucial for improving the performance of electrochemical supercapacitors. This study integrated zirconium dioxide (ZrO2) with a melamine-based covalent organic framework (COF, denoted as MATFB) to develop hybrid electrode materials for energy storage applications. Two sources of ZrO2 were analyzed: commercial ZrO2 and ZrO2 obtained from the Zr-based metal-organic framework (MOF), i.e., UiO-66. The resulting composites were carbonized at 400, 600, and 800 °C to produce porous ZrO2/C@COF materials with enhanced electrochemical properties. The electrochemical performance was evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCDC), and kinetic analysis employing the b-value and Dunn techniques. The ZrO2@MATFB composite demonstrated an exceptional specific capacitance of around 306 F/g at 1 A/g, significantly exceeding that of MATFB (81 F/g) and UiO-66@MATFB (174 F/g). Carbonized composites demonstrated enhanced performance, with UiO-66@MATFB_600 offering specific capacitance of 199 F/g and ZrO2@MATFB_800 achieving around 191 F/g at 1 A/g. Kinetic analysis revealed b-values between 0.69 and 0.87, signifying a hybrid charge-storage mechanism that combines surface-capacitive activity with diffusion-controlled processes. The findings suggest that ZrO2/MATFB-derived carbon composites are promising candidates for high-performance supercapacitor electrodes.