Research Article
Free-Standing Porous Carbon Nanofiber Networks from Electrospinning Polyimide for Supercapacitors
Figure 2
The SEM images of (a) PAA-SiO2 fibers, (b) CFN-SiO2 fibers, and (d) porous CFNs and (c) the energy spectra of CFN-SiO2 fibers.
(a) |
(b) |
(c) |
(d) |