Fig. 3: Electrochemical performance of symmetric MSCs based on HAN-based nanoelectrodes.

a CV curves at different scan rates, b GCD profiles at different current densities, and c device areal capacitance as a function of scan rates of HAN@SnO2@MnO2//HAN@SnO2@MnO2 MSCs, respectively. d CV curves at different scan rates, e GCD profiles at different current densities, and f device areal capacitance as a function of scan rates of HAN@SnO2@PPy//HAN@SnO2@PPy MSCs, respectively.