In this article, a bimetallic hybrid composite of Au and Cu nanoparticles over graphitic carbon nitride has been reported as supercapacitor electrode material. The bimetallic Au-Cu/g-C₃N₄ hybrid was synthesized using facile one-phase impregnation of Au and Cu nanoparticles in holey g-C₃N₄ sheets. The as-synthesized materials were systematically characterized to assess structural, morphological, electronic, and thermal properties. The electrochemical tests revealed that the Au-Cu/g-C₃N₄ hybrid uncovers a superior specific capacitance of 506.25 F/g at 1.25 A/g current density amiable cycle stability with 76.1% capacitance retention at 5 A/g current density after 5000 cycles and excellent rate capability. Our designed asymmetric supercapacitor device based on Au-Cu/g-C₃N₄ hybrid unveils specific energy of 59.3 Wh/kg at a specific power of 2.49 kW/kg. The substantial enhancement in supercapacitor performance of Au-Cu/g-C₃N₄ compared to pristine g-C₃N₄, Au/g-C₃N_4, and Cu/g-C₃N₄ is attributed to synergy between Au, Cu nanoparticles, and semiconductor g-C₃N₄ surface. In hybrid electrode material, the mass ratio of components plays a vital role synergistic supercapacitive effect.

在本文中，Au 和 Cu 纳米颗粒在石墨氮化碳上的双金属混合复合材料已被报道为超级电容器电极材料。双金属Au-Cu/gC ₃ N ₄杂化物是使用Au 和Cu 纳米颗粒在多孔gC ₃ N ₄片中的简便单相浸渍合成的。系统地表征合成材料以评估结构、形态、电子和热性能。电化学测试表明 Au-Cu/gC ₃ N ₄hybrid 在 1.25 A/g 电流密度下具有 506.25 F/g 的优异比电容，具有良好的循环稳定性，5000 次循环后在 5 A/g 电流密度下的电容保持率为 76.1%，并具有出色的倍率性能。我们设计的基于 Au-Cu/gC ₃ N ₄混合体的非对称超级电容器装置在2.49 kW/kg 的比功率下显示出 59.3 Wh/kg 的比能量。在金-铜超级电容器性能的大幅提升/ GC ₃ Ñ ₄相比质朴GC ₃ Ñ ₄，AU / GC ₃ Ñ _4，和Cu / GC ₃ Ñ ₄归因于金，铜纳米颗粒，和半导体GC之间的协同作用₃ N ₄表面。在混合电极材料中，组分的质量比对协同超级电容效应起着至关重要的作用。