In this present work, we synthesized the V-Ag co-doped ZnO nanorods for high performance supercapacitors using one step sol–gel method. The influences of the doping (V and Ag) on the morphological, structural characteristics, electrochemical performance, and long term cycle of ZnO upon redox was investigated for their applicability in SCs. The XRD results revealed to the crystallite sizes of pure ZnO, V_0.03Ag_0.03ZnO, V_0.05Ag_0.05ZnO, and V_0.07Ag_0.07ZnO samples were in the ranges of 32.79, 11.37, 9.30, and 8.60 nm, respectively. The HR-SEM and HR-TEM images revealed similar nanorod morphology. The appearance of Zn, Ag, V, and O was confirmed from the EDX and XPS analysis of the V_0.07Ag_0.07ZnO nanorods without any observation of additional peaks. The CV results validated the pseudocapacitive nature of the synthesized electrodes. The highest specific capacitance was attained for the V_0.07Ag_0.07ZnO electrode was recorded as 2700.19 Fg⁻¹, which is higher than ZnO (402.1 Fg⁻¹) values. The GCD curves of V_0.07Ag_0.07ZnO electrode demonstrated remarkable charging-discharging capabilities, with cyclic retention of 93% at 1 A/g. These excellent performances of the V_0.07Ag_0.07ZnO electrode material make them highly appealing to future energy conversion and storage systems.

在目前的工作中，我们使用一步溶胶-凝胶法合成了用于高性能超级电容器的 V-Ag 共掺杂 ZnO 纳米棒。研究了掺杂（V 和 Ag）对氧化还原氧化还原后 ZnO 的形态、结构特征、电化学性能和长期循环的影响，以了解它们在 SCs 中的适用性。XRD 结果表明纯 ZnO、V _0.03 Ag _0.03 ZnO、V _0.05 Ag _0.05 ZnO 和 V _0.07 Ag _0.07 ZnO 样品的微晶尺寸分别在 32.79、11.37、9.30 和 8.60 nm 的范围内 HR-SEM 和 HR-TEM 图像显示出相似的纳米棒形态。通过 V 的 EDX 和 XPS 分析确认了 Zn、Ag、V 和 O 的出现_0.07 Ag _0.07 ZnO 纳米棒，没有观察到任何额外的峰。CV 结果验证了合成电极的赝电容性质。V _0.07 Ag _0.07 ZnO 电极获得的最高比电容记录为 2700.19 Fg ^-1，高于 ZnO (402.1 Fg ^-1 ) 值。V _0.07 Ag _0.07 ZnO 电极的 GCD 曲线显示出显着的充放电能力，在 1 A/g 下循环保持率为 93%。V _0.07 Ag _0.07 ZnO 电极材料的这些优异性能使其对未来的能量转换和存储系统极具吸引力。