POS3-1033
Effect of Activation on the Electrochemical Performance of Shellac/PAN-Derived Carbon Nanofibers
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
MIN SEO KIM (Kumoh National Institute of Technology)
Co-Author(s)
Abstract
Polyacrylonitrile (PAN) is one of the most widely employed precursor polymers for the fabrication of carbon-based materials. Depending on the spinning technique, PAN can be processed into various carbon material architectures. In particular, electrospinning enables the formation of carbon nanofibers (CNFs) with a continuous and fine fibrous morphology. Owing to their carbonaceous structure, CNFs generally exhibit electric double-layer capacitor (EDLC)-type charge storage behavior, making them promising electrode materials for supercapacitor applications. To further improve their electrochemical performance, CNFs are commonly subjected to activation treatments rather than being directly. The activation process enhances the specific surface area and develops a porous structure, both of which are critical factors for efficient ion adsorption and charge storage. In this study, shellac, a natural polymer, was incorporated into a PAN-based precursor system to fabricate CNFs, which were subsequently subjected to an activation process. The surface morphology of the activated CNFs was examined by scanning electron microscopy (SEM), while the specific surface area and pore characteristics were investigated using Brunauer–Emmett–Teller (BET) analysis. The electrochemical properties of the fabricated CNF electrodes were evaluated using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). Based on these analyses, the effects of shellac incorporation and subsequent physical activation on the structural properties and supercapacitor performance of the CNFs were systematically investigated.
