fig14

Figure 14. (A) SEM, (B) TEM, and (C) HR-TEM images and (D) rate performance of N, S co-doped microporous carbon (NSPC)^[102]. (E) Schematic of the synthesis, (F) TEM and (G) HR-TEM images, and (H) electrochemical performance of S and N co-doped mesoporous carbon spheres (SNMHCSs)^[103]. (I) Schematic of the synthesis, (J) SEM and (K) TEM images, and (L) cycling performance of N and S co-doped 3D macroporous carbon (Sb@S, N-3DPC)^[104].