Porous carbon fibers from gel-spun polyacrylonitrile and poly(methyl methacrylate)-block-poly(acrylonitrile)

Block copolymer (BCP)-based porous carbon fibers represent an emerging structural and functional material for mechanical reinforcement electrochemical energy storage. Herein, by gel-spinning polymer precursors of poly(acrylonitrile) (PAN) poly(methyl methacrylate)- block -poly(acrylonitrile) (PMMA- b -PAN), we have produced a series systematically studied the morphological, mechanical, properties. Porous with BCP in sheath exhibit tensile strength 1.1 GPa, modulus ?190 capacitance 11 F g ?1 at 10 mV s when pyrolyzed 1315 °C under tension. Without tension pyrolysis temperature 800 °C, as both core components achieve highest 70 . The characteristic correlation length PMMA- -PAN calculated through thermodynamically governed computational method, provides estimate pore size fibers. Pore generation their were driven kinetic processing parameters, addition to thermodynamic phase separation. This study shows that bicomponent PAN/PMMA- provide versatile means tuning properties fibers, thus allowing potential use storage materials. • Series PAN are successfully gel-spun into Systematic variation conditions allows Provides pathway design Thermodynamically method size. is parameters thermodynamics.