Fig. 6

The electrochemical performances of integrated units. a, b Photograph (a) and schematic illustrations (b) of flexible 62 aqueous hybrid electrochemical capacitor (AHEC) units connected in series. c CV curves for different numbers of AHECs connected in series (scan rate: 10 V s−1). d Plots of phase angle versus frequency of different numbers of AHECs connected in series. e AC line-filtering performances of 62 AHEC units connected in series. f Comparison of the voltage window and frequency demonstration of the AHECs with those of the reported AC-line filtering ECs, the red curves and circles represent the voltage and frequency range in this work (Supplementary Table 2)6,12,17,18,19,27,29,30,36,37,38. Source data are provided as a Source Data file