789305.fig.002a
(a)
789305.fig.002b
(b)
789305.fig.002c
(c)
789305.fig.002d
(d)
Figure 2: EDX spectra of self-assembled MnO2 thin films on Ni-coated PET films at submersion duration of (a) 1 min, (b) 10 min, (c) 30 min, and (d) 60 min.