Figure 10

(a) EIS-Nyquist plot of asymmetric device at open circuit potential (Inset shows high frequency semicircle), (b) Bode phase plot of asymmetric device, (c) Specific capacitance and Coulombic efficiency of asymmetric device as a function of cycle number (Inset shows 1st 25 cycle of charge-discharge profile) and (d) Ragone plot of fabricated asymmetric supercapacitor device.