A comparative study of porous and hollow carbon nanofibrous structures from electrospinning for supercapacitor electrode material development

Co-axial electrospinning is an efficient technique to develop core-shell or hollow nanofibrous structures. In this study electrospun carbon nanofibers with three different morphologies, i.e. solid porous structure (P-ECNF), wall (H-ECNF), and (HP-ECNF) were developed through bicomponent co-axial of polyacrylonitrile (PAN) poly (methyl methacrylate) (PMMA) by varying proportion the sacrificial PMMA. Through comparative electrochemical analyses, it revealed that primary factors for performance , specific capacitance, materials are mesopore volume total pore . The as well ordered intact fiber also benefits electrolyte transfer subsequent but secondary. Overall electrode material from PAN/PMMA (50/50) solution (P-ECNF-50-50) outperformed those hollow-porous counterparts demonstrated largest capacitance due volume. This showed excellent cycling stability (without any loss capacitance) after 3,000 cycles charging discharging. It even some increase test its relatively large amount micropores.