Fig. 2
The cyclic voltammetry performances of single electrode and unit. a, b Cyclic voltammetry (CV) curves of the poly(3,4-ethylenedioxythiophene) (PEDOT) positive electrode (a) and electrochemically reduced graphene oxide (ErGO) negative electrode (b) in different potential ranges at scan rate of 1 V s−1. c CV curves of PEDOT and ErGO electrodes in separate potential windows at scan rate of 10 V s−1. d CV curves of the aqueous hybrid electrochemical capacitors (AHECs) in different voltage ranges at scan rate of 10 V s−1. e CV curves of the AHEC at scan rate of 1000 V s−1. f Plots of discharge current density versus scan rate of the AHEC. Source data are provided as a Source Data file
