Preparation of flexible phenolic resin-based porous carbon fabrics by electrospinning

Abstract In the present study, we prepared flexible phenolic resin fabrics and corresponding porous carbon fabrics through electrospinning and successive curing and carbonization of resol/ethanol solutions. The addition of high-molecular-weight polyvinyl butyral (PVB) is essential for the stable fabrication of bead-free resol fabrics. Due to a high evaporation rate of ethanol and non-linear molecule structure of resol, the electrospun fabrics consist of entangled high aspect ratio ribbons instead of round fibers. The resol fabrics can be simply cured by heating at low temperature in air. Further carbonization at different temperatures resulted in flexible porous carbon fabrics with different specific surface area, which reached a maximum value of 855 m 2 /g after heat treatment at 1000 °C. These phenolic resin-based free-standing porous carbon fabrics would be promising in adsorption and electrochemical applications.