SnO₂-Based Nanomaterials: Synthesis and Application in Lithium-Ion Batteries and Supercapacitors

Figure 7

SEM images of WO₃-SnO₂ HNS nanocomposites with different added amounts of Na₂SnO₃. (a) 0.2 mmol, (b) 0.5 mmol, and (c) 1 mmol adapted from [52] with permission.

(a)

(b)

(c)