The gossamer-like Nb₂O₅-RGO nanocomposite was synthesized through a solvothermal treatment, and the Nb₂O₅ nanoparticles were uniformly coated on the RGO sheets. The size of the Nb₂O₅ nanoparticles is about 200–700 nm. The applications of Nb₂O₅-RGO as supercapacitor were then explored systematically. The morphology, textural structure, and physicochemical property of Nb₂O₅-RGO were investigated by using SEM, TEM, XRD, FT-IR, TG, and Raman. The electrochemical performance of RGO, Nb₂O₅, and Nb₂O₅-RGO was assessed through CV and galvanostatic charge-discharge test. The experimental results show that gossamer-like Nb₂O₅-RGO exhibits partial faradic pseudocapacitance and good electrical double layer capacitance property. The specific capacitance value 299.23 Fg⁻¹ of Nb₂O₅-RGO nanocomposite is about 2.7 and 1.7 times higher than that of Nb₂O₅ and RGO, retaining 87.72% of its initial capacitance after 2000 cycles under the optimized conditions, which demonstrate that more ordered binary architecture Nb₂O₅-RGO nanocomposite along with easy synthesis possesses faster charge-discharge kinetics and excellent supercapacitive performance.

通过溶剂热处理合成了蛛丝状的Nb ₂ O ₅ -RGO纳米复合材料，并将Nb ₂ O ₅纳米颗粒均匀地涂覆在RGO片材上。Nb ₂ O ₅纳米粒子的大小约为200–700 nm。然后系统地探讨了Nb ₂ O ₅ -RGO作为超级电容器的应用。利用SEM，TEM，XRD，FT-IR，TG和Raman对Nb ₂ O ₅ -RGO的形貌，组织结构和理化性质进行了研究。RGO，Nb ₂ O ₅和Nb ₂ O的电化学性能通过CV和恒电流充放电测试评估了_5- RGO。实验结果表明，类似游丝的Nb ₂ O ₅ -RGO具有部分法拉第伪电容和良好的双电层电容性能。Nb ₂ O ₅ -RGO纳米复合材料的比电容值299.23 Fg ^-1约为Nb ₂ O ₅和RGO的比电容的2.7和1.7倍，在优化条件下经过2000次循环后，其比电容值保持87.72％。那更有序的二进制体系结构Nb ₂ O ₅-RGO纳米复合材料易于合成，具有更快的充放电动力学和出色的超电容性能。