fig14
![Constructing three-dimensional architectures to design advanced anodes materials for sodium-ion batteries: from nanoscale to microscale](https://image.oaes.cc/3d9040ff-fca5-469a-bb18-aacb7645bea9/em4063.fig.14.jpg)
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].