173415.fig.006a
(a)
173415.fig.006b
(b)
173415.fig.006c
(c)
173415.fig.006d
(d)
Figure 6: X-ray diffraction patterns of (a) the CNT (treated with acid for 5 min)/Al foil electrode and the manganese oxide (formed by thermally decomposing Mn(NO3)2 at (b) 200°C, (c) 300°C, and (d) 400°C)/CNT (treated with acid for 5 min)/Al foil composite electrode.