▎ 摘　　要

NOVELTY - Ionic polymer solution, comprises a cationic polymer solution and an anionic polymer solution, where, the cationic polymer solution contains guar gum hydroxypropyltrimethylammonium chloride, and the anionic polymer solution contains polyvinyl alcohol, sodium montmorillonite, magnesium aluminum silicate and sodium carboxymethyl cellulose. USE - Used as ionic polymer solution. ADVANTAGE - The composite electrode has excellent gas barrier property and ion exchange performance, and can effectively reduce the diffusion rate of dissolved oxygen in the aqueous electrolyte to the cathode. The super capacitor prepared by the composite electrode can greatly inhibit the oxygen reduction reaction on the high pressure water system super capacitor cathode the shuttle effect caused by it and can obviously reduce the self-discharge rate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation method of composite electrode; and uper capacitor.