Research Article

Effects of Carbon Nanotubes Acid Treated or Annealed and Manganese Nitrate Thermally Decomposed on Capacitive Characteristics of Electrochemical Capacitors

Figure 4

Surface morphologies of the manganese oxide (formed by thermally decomposing Mn(NO3)2 at 300°C)/CNT (treated with acid for 5 min)/Al foil composite electrode (a) before potential cycling and after potential cycling, (b) at 10 cycles, (c) at 100 cycles, and (d) at 1000 cycles.
173415.fig.004a
(a)
173415.fig.004b
(b)
173415.fig.004c
(c)
173415.fig.004d
(d)