Figure 6

(Ozoemena):

Electrochemical performances of asymmetric pseudocapacitors of ANP_mr//AC coated on carbon cloth 1M Na₂SO₄: (a) Typical specific capacitance calculated from CV curve against voltage at a scan rate of 25 mVs⁻¹; (b) galvanostatic CD profiles at 10 mA cm⁻²; (c) Areal capacitance from CD curves as a function of current density; (d) Typical voltage-holding (floating) curves acquired for 50 h at the voltage of 1.4 V and at 10 mA cm⁻², inset is an example of CD curves after 50 h voltage-holding; (e) Ragone plot for this work and similar symmetric supercapacitors reported in literature^{33,34,35,36,37}; (f) Nyquist plot of ANP_mr//AC (inset; magnified view).