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<p>In this work, the NiCr-MOF@ZnO composite based electrode on carbon paper was fabricated using the hydrothermal methods. The NiCr-MOF@ZnO nanocomposite demonstrated a high specific capacitance of 1138.5 Fg<sup>−1</sup> in three-electrode assembly. Additionally, the NiCr-MOF@ZnO//PANI@AC hybrid supercapacitor reveals energy density (Ed) of 36.74 Wh kg<sup>−1</sup> and power density (Pd) of 1100&#xa0;W kg<sup>−1</sup> with 81.56% capacity retention after 6000 cycles. Besides, the NiCr-MOF@ZnO nanocomposite is a chemical sensor for L-Tryptophan. The NiCr-MOF@ZnO-based sensor worked from 2 µM to 40 µM against detecting L-Trp. It exhibited the LOD of 0.05 µM and an extraordinary sensitivity (897 µA mM<sup>−1</sup> cm<sup>−2</sup>). It shows great potential for energy storage and electrochemical sensors. This work offerings an resourceful opportunity for developing productive and reliable hybrid supercapacitor electrode materials.</p>

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Designing of NiCr-MOF@ZnO//PANI@AC on carbon paper electrode for energy storage and ultrasensitive L-Tryptophan sensor

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • Haitham Osman,
  • Muhammad Imran,
  • Amal Abdulrahman,
  • A. M. Afzal,
  • Zaina Algarni,
  • Saba Khalil,
  • M. A. Diab,
  • Heba A. El-Sabban

摘要

In this work, the NiCr-MOF@ZnO composite based electrode on carbon paper was fabricated using the hydrothermal methods. The NiCr-MOF@ZnO nanocomposite demonstrated a high specific capacitance of 1138.5 Fg−1 in three-electrode assembly. Additionally, the NiCr-MOF@ZnO//PANI@AC hybrid supercapacitor reveals energy density (Ed) of 36.74 Wh kg−1 and power density (Pd) of 1100 W kg−1 with 81.56% capacity retention after 6000 cycles. Besides, the NiCr-MOF@ZnO nanocomposite is a chemical sensor for L-Tryptophan. The NiCr-MOF@ZnO-based sensor worked from 2 µM to 40 µM against detecting L-Trp. It exhibited the LOD of 0.05 µM and an extraordinary sensitivity (897 µA mM−1 cm−2). It shows great potential for energy storage and electrochemical sensors. This work offerings an resourceful opportunity for developing productive and reliable hybrid supercapacitor electrode materials.