fig5
![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.5.jpg)
Figure 5. (A) Schematic of the synthesis, (B) SEM and TEM images, (C) rate performance, and (D) cycling performance of multi-shell hollow carbon nanospheres (MS-HCNs)[75]. (E) rate performance, (F) schematic of the synthesis, and (G) TEM images of two-to-five-shell cobalt sulfide hollow nanoboxes[76].