Figure 3

FE-SEM images of Zn foil surface in EV solution (10 ppm, pH = 6) at room temperature for (a) 1 h, (b) 2 h, (c) 4 h, (d) 8 h, (e) 16 h, (f) 24 h, (g) 32 h, (h) 48 h, (i) 64 h, (j) 0 h, (k) 4 h, (l) 8 h, (m) 16 h, (n) 24 h, (o) 24 h under UV, (p) 24 h under Vis, (q) XRD pattern and (r) EDX of the surface powders. (a)~(i) were obtained from pure Zn foil, (j)~(r) were obtained from Zn foil of Alkaline-Manganese Dioxide-Zinc Cell. Inset images are enlarged images for clarity.