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<p>Advancements in copper-metal-organic frameworks (Cu-MOFs) and molybdenum carbide (Mo<sub>2</sub>CT<sub><i>x</i></sub> MXene) are gaining attention because of their exceptional electrochemical performance, which makes them suitable for various applications. This study investigates Cu-MOF, Mo<sub>2</sub>CT<sub><i>x</i></sub>, and Cu-MOF/Mo<sub>2</sub>CT<sub><i>x</i></sub> composites as potential electrocatalysts for the hydrogen evolution reaction (HER) [Xu et al. in Energy Fuels 38:7579–7613, 2024; Zhu et al. in J. Alloy. Compd. 973, 2024]. We further explore their suitability for integration into next-generation hybrid energy storage devices. The Cu-MOF nanocomposite is uniformly distributed across the surface of the stable Mo<sub>2</sub>CT<sub><i>x</i></sub> nanosheets, facilitated by the presence of robust chemical bonding and small channels. The Cu-MOF/Mo<sub>2</sub>CT<sub><i>x</i></sub> fabricated electrode showcased exceptional activity for the HER, requiring a low overpotential of 87.12&#xa0;mV and a high Tafel slope of 52.54&#xa0;mV/dec. The electrode was utilized to construct a hybrid supercapattery device in combination with activated carbon (AC) for efficient energy storage. The novel hybrid energy storage device demonstrated an outstanding synergy of high energy density (66 Wh/kg) and exceptional power density (876 W/kg), significantly outperforming conventional supercapacitors. Additionally, theoretical analyses were applied to distinguish the capacitive and diffusive contributions-based on experimental data. This investigation highlights a groundbreaking advancement in electrode design, offering remarkable reactivity and opening new avenues for progress in energy storage and electrochemical water-splitting technologies.</p>

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Surface modification of Mo2CTx Mxene with Cu-MOF for powering battery, supercapacitor, and stable electrocatalytic hydrogen evolution

  • 期刊论文

  • 发表日期：

    2025年3月13日

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  • Ehtisham Umar,
  • Muhammad Arslan Sunny,
  • M. Waqas Iqbal,
  • N. A. Ismayilova,
  • Akbar Mohammad,
  • Abhinav Kumar,
  • Mohammad Abul Farah,
  • Mohammad Ajmal Ali,
  • Rashid Javed

摘要

Advancements in copper-metal-organic frameworks (Cu-MOFs) and molybdenum carbide (Mo2CTx MXene) are gaining attention because of their exceptional electrochemical performance, which makes them suitable for various applications. This study investigates Cu-MOF, Mo2CTx, and Cu-MOF/Mo2CTx composites as potential electrocatalysts for the hydrogen evolution reaction (HER) [Xu et al. in Energy Fuels 38:7579–7613, 2024; Zhu et al. in J. Alloy. Compd. 973, 2024]. We further explore their suitability for integration into next-generation hybrid energy storage devices. The Cu-MOF nanocomposite is uniformly distributed across the surface of the stable Mo2CTx nanosheets, facilitated by the presence of robust chemical bonding and small channels. The Cu-MOF/Mo2CTx fabricated electrode showcased exceptional activity for the HER, requiring a low overpotential of 87.12 mV and a high Tafel slope of 52.54 mV/dec. The electrode was utilized to construct a hybrid supercapattery device in combination with activated carbon (AC) for efficient energy storage. The novel hybrid energy storage device demonstrated an outstanding synergy of high energy density (66 Wh/kg) and exceptional power density (876 W/kg), significantly outperforming conventional supercapacitors. Additionally, theoretical analyses were applied to distinguish the capacitive and diffusive contributions-based on experimental data. This investigation highlights a groundbreaking advancement in electrode design, offering remarkable reactivity and opening new avenues for progress in energy storage and electrochemical water-splitting technologies.