fig1
Figure 1. (A) Schematic for synthesizing N/S-CNFs; (B) FESEM; (C) TEM; and (D) HR-TEM images of CNF-700; (E) FESEM; (F) TEM; (G) HR-TEM; and (H) corresponding EDX elemental mapping images of N/S-CNF-700. N/S-CNFs: N/S co-doped carbon nanofibers; FESEM: field-emission scanning electron microscopy; TEM: transmission electron microscopy; HR-TEM: high-resolution (HR)-TEM; EDX: energy dispersive X-ray.
