POS3-0417
Textural Engineering of Carbon Nanofibers Derived from SWNT/Polymer Precursors for High-Performance Supercapacitor Applications
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
SOYEON KIM (Chonnam National University)
Co-Author(s)
Abstract
Polymer-blend engineering offers a versatile route to tailor the morphology of carbon nanofibers derived from polymer precursors for advanced energy-storage devices. In this study, nanofibers composed of single-walled carbon nanotubes (SWNTs), polyvinyl alcohol (PVA), and polyacrylonitrile (PAN) were fabricated via electrospinning as precursors for porous carbon nanostructures. The resulting SWNT/polymer-blend nanofibers (SPNs) exhibited aligned SWNT domains and enhanced molecular ordering. Carbonization of SPNs produced SWNT/polymer-blend carbon nanofibers (SPCNs) with controllable structural and textural properties. An optimized SWNT content promoted pore structure development, resulting in an increased surface area and reduced charge-transfer resistance relative to the SWNT-free control. To further tailor pore architectures, PVA was selectively removed as a sacrificial porogen, which generated interconnected meso- and macro-porous networks. The resulting porosity improved electrolyte accessibility and charge-storage capability. Consequently, the optimized porous electrode exhibited substantially enhanced capacitance compared with the corresponding control. These results demonstrate that polymer-blend design and texture-control engineering provide a promising approach for high-performance carbon electrodes for supercapacitors.
