In this study, a novel NiS/CNTs nanohybrid with a higher specific capacity and cyclic performance was fabricated as an anodic material for supercapacitor applications. The NiS/CNTs nanohybrid was furnished on the three-dimensional nickel foam (NF) to prepare a novel electrode with a self-supporting design. The NiS/CNTs electrode, with its hybrid composition, larger surface area, self-supporting design and improved electrical conductivity, provides a higher gravimetric capacity of 732F/g@1Ag⁻¹. Application studies have shown that NiS/CNTs electrodes not only have good gravimetric ability, but also have considerable cyclic performance and activity due to their hybrid composition and self-supporting design. More precisely, the NiS/CNTs@NF electrode lost only 4.9% of its gravimetric capacity after 3000 continuous galvanostatic discharge (GCD) cycles, indicating its exceptional cyclic performance. In addition, the manufactured hybrid electrode maintains a gravimetric capacity of approximately 84.5%, even if the applied current density is increased fivefold. The impedance results indicated that the electrochemical reaction between the NiS/CNTs and the electrolyte is more rapid and highly reversible. Based on the findings from the electrochemical study, the NiS/CNTs@NF electrode appears to be a promising candidate for practical applications in advanced energy storage devices.

在这项研究中，制备了一种具有更高比容量和循环性能的新型 NiS/CNTs 纳米杂化物作为超级电容器应用的阳极材料。NiS/CNTs 纳米杂化物被提供在三维泡沫镍 (NF) 上以制备具有自支撑设计的新型电极。NiS/CNTs 电极以其混合成分、更大的表面积、自支撑设计和改进的导电性，提供了更高的重量容量 732F/g@1Ag ^-1. 应用研究表明，NiS/CNTs 电极不仅具有良好的重力能力，而且由于其混合组成和自支撑设计，还具有相当大的循环性能和活性。更准确地说，NiS/CNTs@NF 电极在 3000 次连续恒电流放电 (GCD) 循环后仅损失了其重量容量的 4.9%，表明其卓越的循环性能。此外，即使施加的电流密度增加了五倍，制造的混合电极也能保持约 84.5% 的重量容量。阻抗结果表明 NiS/CNTs 与电解质之间的电化学反应更快速且高度可逆。根据电化学研究的结果，