Melamine-based metal–organic frameworks (MOFs) for high-performance supercapacitor applications are described in this paper. Melamine (Me) is employed as an organic linker, and three metal ions cobalt, nickel, and iron (Co, Ni, Fe) are used ascentral metal ions to manufacture the desired MOF materials (Co-Me, Ni-Me, and Fe-Me). While melamine is an inexpensive organic linker for creating MOF materials, homogenous molecular structures can be difficult to produce. The most effective technique for expanding the molecular structures of MOFs through suitable experimental optimization is used in this work. The MOFs materials are characterized using standard techniques. The kinetics of the materials' reactions are investigated using attenuated total reflectance. X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (P-XRD), Fourier transform infrared (ATR-FT-IR) spectroscopy, and Brunauer–Emmett–Teller (BET) studies verified the development of the MOFs structure. The surface morphology of the produced materials is investigated using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and atomic force microscopy (AFM). The elements found in MOFs are studied via XPS analysis, energy dispersive X-ray diffraction (EDX), mapping, and mapping. The materials' absorption characteristics were examined by the use of UV–visible absorption spectroscopy. The thermal stability of the materials is examined by thermogravimetric analysis (TGA); these materials are more stable, according to the findings, even at high temperatures. The electrochemical investigation determines the specific capacitance of the materials. The specific capacitance of Co-Me, Ni-Me, and Fe-Me in 3 M KOH electrolyte is 1267.36, 803.22, and 507.59F/g @ 1 A, according to the three-electrode arrangement. The two-electrode device maximizes power and energy density by using an asymmetrical supercapacitor in a 3 M KOH electrolyte. The power and energy densities of Co-Me, Ni-Me, and Fe-Me are 3650.63, 2813.21, and 6210.45 W kg, and 68.43, 46.32, and 42.2 Wh kg, respectively. According to the materials stability test, the MOFs are highly stable after 10,000 cycles. Preliminary results suggest that the materials are suitable for usage in high-end supercapacitor uses.

中文翻译：

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用于高性能超级电容器应用的三聚氰胺基金属有机框架

本文描述了用于高性能超级电容器应用的三聚氰胺基金属有机框架（MOF）。采用三聚氰胺（Me）作为有机连接体，以钴、镍和铁三种金属离子（Co、Ni、Fe）为中心金属离子来制造所需的 MOF 材料（Co-Me、Ni-Me 和 Fe） -我）。虽然三聚氰胺是一种用于制造 MOF 材料的廉价有机连接剂，但均匀的分子结构可能难以生产。这项工作采用了通过适当的实验优化来扩展 MOF 分子结构的最有效技术。使用标准技术对 MOF 材料进行表征。使用衰减全反射率研究材料反应的动力学。 X射线光电子能谱（XPS）、粉末X射线衍射（P-XRD）、傅里叶变换红外（ATR-FT-IR）光谱和Brunauer-Emmett-Teller（BET）研究验证了MOF结构的发展。使用场发射扫描电子显微镜（FE-SEM）、高分辨率透射电子显微镜（HR-TEM）和原子力显微镜（AFM）研究所生产材料的表面形貌。通过 XPS 分析、能量色散 X 射线衍射 (EDX)、绘图和绘图来研究 MOF 中发现的元素。通过使用紫外-可见吸收光谱检查材料的吸收特性。通过热重分析（TGA）检查材料的热稳定性；研究结果表明，即使在高温下，这些材料也更加稳定。电化学研究确定了材料的比电容。根据三电极布置，3 M KOH 电解质中 Co-Me、Ni-Me 和 Fe-Me 的比电容分别为 1267.36、803.22 和 507.59F/g @ 1 A。该双电极器件通过在 3 M KOH 电解质中使用不对称超级电容器来最大限度地提高功率和能量密度。 Co-Me、Ni-Me和Fe-Me的功率密度和能量密度分别为3650.63、2813.21和6210.45 W kg，以及68.43、46.32和42.2 Wh kg。根据材料稳定性测试，MOFs在10,000次循环后仍然高度稳定。初步结果表明，该材料适合用于高端超级电容器用途。