A new type of 3D NiS/MoS₂@N-doped reduced graphene oxide (NiS/MoS₂@N-rGO) hybrid composite is presented and its super-capacitive performance is studied. NiS/MoS₂@N-rGO hybrid is synthesized via an easy and cost-effective hydrothermal route. By combining nickel sulfide and molybdenum disulfide with N-reduced graphene oxide, the as-prepared sample demonstrates a mesoporous nanostructure that increases the accessible area of the electrolyte ions. Due to the synergistic effect in the 3D network, such NiS/MoS₂@N-rGO hybrid is used as electrode and it demonstrates a highly specific capacity of 2225 F/g at a current density of 1 A/g, and a good rate of 1347.3 F/g at 10 A/g. Furthermore, we also test a full symmetric supercapacitor based on NiS/MoS₂@N-rGO, which displays excellent capacitive property up to 1028 F/g at 1 A/g, with high energy and good power density up to 35.69 W h/kg and 601.8 W/kg, and good cycle stability up to 94.5% initial capacitive retention after 50,000 loops. Moreover, the symmetric supercapacitor demonstrates excellent flexibility under different bending conditions.

提出了一种新型的3D NiS / MoS ₂ @N掺杂还原氧化石墨烯（NiS / MoS ₂ @ N-rGO）杂化复合材料，并对其超电容性能进行了研究。NiS / MoS ₂ @ N-rGO杂化物是通过简单且经济高效的水热途径合成的。通过将硫化镍和二硫化钼与N还原的氧化石墨烯结合使用，所制得的样品显示出介孔纳米结构，可增加电解质离子的可及面积。由于3D网络中的协同效应，例如NiS / MoS ₂@ N-rGO杂化物用作电极，它在1 A / g的电流密度下显示出2225 F / g的高比容量，在10 A / g时显示出1347.3 F / g的良好比率。此外，我们还测试了基于NiS / MoS ₂ @ N-rGO的全对称超级电容器，该电容器在1 A / g时表现出高达1028 F / g的出色电容性能，具有高能量和高达35.69 W h /的良好功率密度。 kg和601.8 W / kg，以及50,000次循环后高达94.5％的初始电容保持率的良好循环稳定性。此外，对称超级电容器在不同的弯曲条件下显示出出色的柔韧性。