| 초록 |
Poly(acrylonitrile)/dimethyl formamide(DMF) solutions were electrospun to be sub-micron fiber web. The fiber web was subsequently stabilized, carbonized and steam activated to prepare EDLC. Poly(acrylonitrile)(PAN) solutions in dimethylformamide(DMF) were electrospun to be webs consisting of 400nm ultra-fine fibers. The webs were oxidatively stabilized, activated by steam and resulted to be activated carbon fibers (ACFs). The specific surface area was 800-1230m2/g, which showed a trend of a decrease of the surface area with an increase in activation temperature, showing opposite behavior to the other regular PAN fibers. The capacitance of the EDLC resulted was 170F/g at electrolyte concentration of 5.4 mol / l of KOH. |
