Abstract

Porous carbon nanofibers have attracted considerable attention as electrode materials for supercapacitors owing to their high specific surface area and excellent electrical conductivity. In this study, cobalt was introduced onto porous carbon nanofibers fabricated using calcium carbonate (CaCO3) nanoparticles as sacrificial templates via an electrodeposition method, and the resulting electrochemical performance was investigated. The prepared nanofibers exhibited a porous structure, and the cobalt-decorated porous carbon nanofibers showed reduced internal resistance and enhanced specific capacitance compared to pristine porous carbon nanofibers. These results demonstrate that cobalt deposition effectively improves the energy storage performance of porous carbon nanofiber-based electrodes, suggesting their potential application as supercapacitor electrodes.