Here, for improvement of electrochemical energy storage properties of ZIF-67, it has been incorporated with low and high concentrations of silver ions, followed by a solid state thermolysis in an inert atmosphere to synthesis of Ag-incorporated cobalt/porous carbon composites. These as-synthesized active materials have been deposited on a nickel foam to electrochemical measurements including, Cyclic Voltammetry, Galvanostatic Charge-Discharge and Electrochemical Impedance Spectroscopy. The results revealed that the sample with trace amounts of Ag incorporation enhanced the supercapacitive performance and improved the specific charge capacity fourfold in all conducted scan rates. An increase in Ag ion improved the contribution of diffusion-controlled charge storage mechanism. Also, to investigate practical capabilities of these materials, the asymmetric supercapacitor was set up using one of the electrodes as the positive electrode and an activated carbon electrode as the negative electrode which performed maximum specific energy of 8.50 Wh/kg and maximum specific power of 7037.04 W/kg at gravimetric currents of 1 and 10 A/g respectively. Furthermore, this hybrid supercapacitor showed a high-capacity retention of 92% after 3000 cycles.

在这里，为了改善 ZIF-67 的电化学储能性能，它已与低浓度和高浓度的银离子结合，然后在惰性气氛中进行固态热解，以合成掺入银的钴/多孔碳复合材料。这些合成后的活性材料已沉积在镍泡沫上以进行电化学测量，包括循环伏安法、恒电流充放电和电化学阻抗谱。结果表明，掺入痕量 Ag 的样品增强了超级电容性能，并在所有传导扫描速率下将比电荷容量提高了四倍。Ag 离子的增加提高了扩散控制电荷存储机制的贡献。此外，为了研究这些材料的实际能力，使用其中一个电极作为正极，活性炭电极作为负极设置不对称超级电容器，在 1 和 10 的重力电流下，其最大比能量为 8.50 Wh/kg，最大比功率为 7037.04 W/kg分别为 A/g。此外，这种混合超级电容器在 3000 次循环后显示出 92% 的高容量保持率。