Fig. 3From: Monodisperse Carbon Nanospheres with Hierarchical Porous Structure as Electrode Material for SupercapacitorElectrochemical performance of MCNS, PCNS, and ACNS. a CV curves at 10 mV s−1. b CP curves at 0.2 A g−1. c Specific capacitance at different current densities. d Cycling test at 10 A g−1. e Nyquist plots in the frequency range from 10 mHz to 10 kHz. f Bode angle plotsBack to article page