| abstract |
The invention discloses a preparation method of a dual-ion water system energy storage device. (1) Pretreatment of metal copper sheets such as cleaning, anodic oxidation under certain conditions, and high temperature sintering in a tube furnace to obtain CuO nanoarray electrodes; (2) Pretreatment of commercial carbon cloth such as cleaning, etc., through certain conditions VC/V 2 O 3 /C nanocomposite electrode was obtained by electrochemical deposition, carbon coating and high-temperature carbonization; (3) the above two electrodes were separated by a separator, and assembled into an aqueous energy storage device in KOH electrolyte, This energy storage device exhibits unique dual-ion energy storage properties, namely CuO reacts with OH - redox and VC/ V2O3 /C reacts with K + redox. Therefore, the present invention uses a simple preparation method to create a dual-ion water-based energy storage device, and its excellent electrochemical performance is very promising in electrochemical energy storage devices. |