复合数
析氧
氧气
化学
材料科学
复合材料
电化学
有机化学
电极
物理化学
作者
Ehtisham Umar,Haseebul Hassan,Muhammad Waqas Iqbal,Afaf Khadr Alqorashi,Badriah S. Almutairi,Hussein Alrobei
标识
DOI:10.1016/j.est.2024.110923
摘要
The synthesis of nanoscale porous coordination network (PCN-224 MOF) is intricate due to the difficulty in spatially influencing typical soluble metal salt chemicals, leading to the formation of bulk MOFs. This study presents the novel utilization of V2CTx as a metal precursor for the preparation of PCN-224 MOF nanostructures, with the ability to modulate the resulting nanostructure by adjusting the reaction temperature. The growth of PCN-224 provides the surface atoms with strong electronegative in V2CTx MXene and the availability of abundant accessible active sites for ligands. This study introduces a novel methodology for fabricating a composite material by integrating V2CTx MXene and PCN-224 MOF. The PCN-224/V2CTx supercapattery have 185.5C/g specific capacity (Qs) at 2 A/g and an electrode with 82 Wh/kg and 840 W/kg energy density (Ed) and power density (Pd). The electrode exhibited a coulombic efficiency and capacitive retention of 96 % and 82 % after undergoing 15,000 cycles. It has outstanding cyclic stability, maintaining 94 % of charge time and 97 % discharge time after 15,000 cycles. This study suggests using duplicate cell electrodes of PCN-224/V2CTx supercapattery in daily-use portable devices and oxygen evaluation reaction (OER) investigation. This is the first study to examine PCN-224/V2CTx electrochemical behavior and propose high-energy, high-rate electrochemical devices use it as an electrode.
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