Fig. 1 | Nature Communications

Fig. 1

From: Arbitrary waveform AC line filtering applicable to hundreds of volts based on aqueous electrochemical capacitors

Fig. 1The alt text for this image may have been generated using AI.

Preparation and architectures of electrode materials. a Schematic illustrations of the preparation of acid-pretreated poly(3,4-ethylenedioxythiophene) (PEDOT) positive electrode, electrochemically reduced graphene oxide (ErGO) negative electrode, and the assembly of aqueous hybrid electrochemical capacitor (AHEC), and GO represents graphene oxide. b, c SEM images of the PEDOT positive electrode with different magnification, respectively. d High-Angle Annular Dark Field TEM image of PEDOT positive electrode. e, f Top and cross-section SEM images of ErGO negative electrode, respectively. g Photo of the AHEC unit and various commercial aluminum electrolytic capacitors (AECs)

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