901842.fig.002a
(a)
901842.fig.002b
(b)
901842.fig.002c
(c)
901842.fig.002d
(d)
Figure 2: SEM images of the products with no additive in the electrolyte at the different deposition times of 5 min (a), 10 min (b), 20 min (c), and 30 min (d).