Porous metal sulfide/carbon hybrid materials are promising functional composites that are extensively used in high performance supercapacitors. Here, we report electrochemical supercapacitance performance of hierarchical porous vanadium sulfide (V₃S₄)/reduced graphene oxide (RGO) composite (V₃S₄/RGO) prepared by hydrothermal method. The as prepared materials were characterized in detail by powder X-ray diffraction, scanning and transmission electron microscopy, Raman scattering, Fourier transformed infrared and X-ray photoelectron spectroscopy and the coherent growth mechanism was proposed. Porous hierarchical structure of V₃S₄/RGO composite material offered easy access to the ionic and electronic charge transportation and showed better electrochemical performance compared to the individual components. Specific capacitance of V₃S₄/RGO was found to be 520 F/g at a current density of 1 A/g with outstanding cyclic stability retaining 99.6% capacitance after 2000 charge–discharge cycles at 10 A/g. Cyclic voltammetry showed reversibility in current response both in cathodic and anodic scan and specific capacitance was found to be 500 F/g at a scan rate of 5 mV/s. These results strongly suggest that V₃S₄/RGO composite materials with hierarchical porous structure would be an excellent electrode material for supercapacitor applications.

多孔金属硫化物/碳杂化材料是有前途的功能性复合材料，已广泛用于高性能超级电容器中。在这里，我们报告了通过水热法制备的多孔多孔硫化钒（V ₃ S ₄）/还原氧化石墨烯（RGO）复合材料（V ₃ S ₄ / RGO）的电化学超电容性能。通过粉末X射线衍射，扫描和透射电子显微镜，拉曼散射，傅立叶变换红外和X射线光电子能谱对所制备的材料进行了详细表征，并提出了相干生长机理。V ₃ S _4的多孔层次结构/ RGO复合材料提供了易于进行离子和电子电荷传输的途径，并且与单个组件相比，具有更好的电化学性能。在1 A / g的电流密度下，V ₃ S ₄ / RGO的比电容为520 F / g，出色的循环稳定性在10 A / g的2000次充放电循环后仍保持99.6％的电容。循环伏安法在阴极和阳极扫描中均显示出电流响应的可逆性，并且在5 mV / s的扫描速率下发现比电容为500 F / g。这些结果强烈表明具有分级多孔结构的V ₃ S ₄ / RGO复合材料将是用于超级电容器的极好的电极材料。