Producing Porous Polyacrylonitrile Fibers Using Wet-Spinning Method for Making Carbon Fibers

Wet-Spun Porous Carbon Microfibers for Enhanced Electrochemical Detection

“…18 Although wet-spinning is a widely accepted fiber spinning technique, few reports have explored porous microfiber formations, and of those that have, methods are still lacking for controlling pore geometry/distribution and surface morphology for enhanced analyte interactions rather than just internal porosity. 19 PAN-spinning dope additives could hold the key to maximizing mechanical properties, 20,21 and here, we show that doping additives enables an increase in defect sites and edge plane character accompanied by morphological advantages for increased analyte−electrode surface interactions.…”

“…This block-copolymerization phenomenon has been vastly explored in the supercapacitor realm − for specific surface area and electrocatalytic behavior, but electrochemistry explorations have found these geometries incompatible for redox enhancements from local analyte trapping. , Wet-spinning, on the other hand, produces dimensionally compatible carbon microfibers of a continuous length for viable microelectrode fabrication applications for beneficial biosensing and can avoid fiber collapse, void formation, and extended surface defects, with tunable geometries and tensile properties . Although wet-spinning is a widely accepted fiber spinning technique, few reports have explored porous microfiber formations, and of those that have, methods are still lacking for controlling pore geometry/distribution and surface morphology for enhanced analyte interactions rather than just internal porosity . PAN-spinning dope additives could hold the key to maximizing mechanical properties, , and here, we show that doping additives enables an increase in defect sites and edge plane character accompanied by morphological advantages for increased analyte–electrode surface interactions.…”