| 초록 |
The nanostructured hybrids electrodes with different featured materials are promising for improving the energy storing capacity of the supercapacitors. Hitherto, it is challenging for the researcher to develop the high-performance nanohybrid electrode materials with controllable size, composition and morphology. Here, we have prepared the ternary core–shell composed ZnO@MnO2@RuO2 nanorod arrays on the flexible stainless steel mesh (SSM) through the layer-by-layer process. The passivation of highly conducting RuO2 nanoparticles on the surface of binary ZnO@MnO2 is allow the easy and fast charge transfer process to further improve the electrochemical performance of the supercapacitor. Due to enhanced electron transfer process, the charge transfer resistances of the ZnO@MnO2@RuO2 nanorod arrays are drastically reduced. The electrochemical test for the ZnO@MnO2@RuO2 nanorod arrays are performed in the Na2SO4 electrolyte, which gives the ultrahigh specific capacitance (more than 1000 F/g at 5 mV/s) with excellent a capacitance retention of 94% after 20000 CV cycles at 100 mV/s scan rate, indicating the excellent electrochemical features of the ZnO@MnO2@RuO2 nanorod arrays. |
