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<p>Metal–organic frameworks (MOFs) are popular due to their large surface area, tunable pore topologies, and unique structural properties. They are promising energy storage possibilities due to their traits. This study successfully synthesized a Zn-MOF using a room-temperature Co-precipitation method. X-ray diffraction confirmed that Zn-MOF exhibits a monoclinic crystal structure with a well-defined framework composed of Zn metal ions coordinated with BDC ligands, ensuring structural integrity. Thermal stability investigation employing TG/DTA showed endothermic breakdown at 485&#xa0;°C, demonstrating the MOF’s resilience. FTIR was utilized for functional groups analysis studies. SEM analysis revealed particles predominantly exhibiting a Hexagonal shape with a sub-micron particle size. The Zn-MOF electrode accomplishes a supreme specific capacity of 122 mAh/g at 0.5 A/g. Furthermore, the Zn-MOF exhibited excellent cyclic stability, with a coulombic efficiency of 98.24% and capacity retention of 84.61% subsequent 3000 cycles at a higher current density. The symmetric supercapacitor device offered efficient charge transport, characterized by a low charge transfer resistance of approximately 2.3 Ω. Notably, the device delivered a specific power of 884.12 W kg<sup>−1</sup>and a specific energy of 10.3 Wh kg<sup>−1</sup>. Prolonged cycling stability was observed, with columbic efficiency and capacity retentions of 94.40% and 83.52% after 4000 cycles. These results show that Zn-MOF is a promising electrode for symmetric supercapacitors.</p>

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Design and electrochemical profiling of Zn-MOF for next-generation supercapacitors

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • M. Deepikaa,
  • S. Karthickprabhu,
  • K. Karuppasamy,
  • M. Mahendran

摘要

Metal–organic frameworks (MOFs) are popular due to their large surface area, tunable pore topologies, and unique structural properties. They are promising energy storage possibilities due to their traits. This study successfully synthesized a Zn-MOF using a room-temperature Co-precipitation method. X-ray diffraction confirmed that Zn-MOF exhibits a monoclinic crystal structure with a well-defined framework composed of Zn metal ions coordinated with BDC ligands, ensuring structural integrity. Thermal stability investigation employing TG/DTA showed endothermic breakdown at 485 °C, demonstrating the MOF’s resilience. FTIR was utilized for functional groups analysis studies. SEM analysis revealed particles predominantly exhibiting a Hexagonal shape with a sub-micron particle size. The Zn-MOF electrode accomplishes a supreme specific capacity of 122 mAh/g at 0.5 A/g. Furthermore, the Zn-MOF exhibited excellent cyclic stability, with a coulombic efficiency of 98.24% and capacity retention of 84.61% subsequent 3000 cycles at a higher current density. The symmetric supercapacitor device offered efficient charge transport, characterized by a low charge transfer resistance of approximately 2.3 Ω. Notably, the device delivered a specific power of 884.12 W kg−1and a specific energy of 10.3 Wh kg−1. Prolonged cycling stability was observed, with columbic efficiency and capacity retentions of 94.40% and 83.52% after 4000 cycles. These results show that Zn-MOF is a promising electrode for symmetric supercapacitors.