Preparation and electrochemical properties of carbon nanofibers derived from polybenzimidazole/polyimide precursor blends

One-dimensional nitrogen-containing carbon nanostructures

“…It appears that high surface area and developed mesoporosity (uniform mesopores were observed at 15.0 nm) in combination with 6.7 wt.% of N provided good capacitive behavior in agreement with previous report [336]. Somewhat lower specific capacitances (111 F g -1 ) were observed for carbon nanofibers derived from polybenzimidazole/polyimide precursor blends [562] while …”

“…NCNFs were also prepared through electrospinning a solution of polyacrylonitrile [558,559], blend solution of polyacrylonitrile and PPy [560], or a blend solution of polyacrylonitrile and polystyrene [561], followed by carbonization. It could reasonably be supposed that CNFs prepared in numerous experiments by the carbonization of N-containing polymers, e.g., CNFs fabricated by thermal treatment of electrospun nanofibers obtained from precursor blends of polybenzimidazole and polyimide [562], represent the NCNFs despite the fact that there is no experimental evidence for nitrogen incorporation (elemental analysis data are missing).…”

Novel binder-free electrode materials for supercapacitors utilizing high surface area carbon nanofibers derived from immiscible polymer blends of PBI/6FDA-DAM:DABA

“…Also the energy densities and power densities obtained for all the PBI/6FDD blends are much higher than the those reported for PBI blends with other polymers. 28,29 Fig. 13(b) shows the galvanostatic discharging curves for carbonized blends and PBI at 1 A g À1 .…”

“…Steam activated CNFs (ACNFs) from PBI/Matrimid (75 : 25) showed aspecic capacitance of 126 F g À1 , and energy and power densities of 49 W h kg À1 and 7 kW kg À1 in an ionic liquid electrolyte, EMITFSI. 28 Recently, porous carbon bers have been prepared from polybenzimidazole/poly-L-lactic acid (PBI/PLLA) blends. PLLA acts as a sacricial polymer in the blends and lends increased porosity upon decomposition.…”

Fabrication and electrochemical characterization of polyimide‐derived carbon nanofibers for self‐standing supercapacitor electrode materials

“…7 Carbon materials are widely used for supercapacitor electrode materials due to their low cost, high performance, and versatile existing forms such as powders, fibers, felts, and composites. [8][9][10][11][12][13] Especially, carbon nanofibers (CNFs) have high electrical conductivity, specific surface area, mechanical stability, and electrolyte wettability. 14 CNFs can be fabricated simply and efficiently by carbonizing electrospun polymeric nanofibers.…”