▎ 摘　　要

NOVELTY - Preparing three-dimensional porous high oxygen transmission carbon-based substrate non-symmetrical wettability composite electrode comprises (i) sequentially using acetone, ethanol and deionized water to clean the impurities of the carbon electrode, (ii) soaking the cleaned carbon electrode in a certain concentration of polytetrafluoroethylene solution for 2-10 minutes, and calcining in a muffle furnace to obtain a hydrophobic substrate by one-step calcining, (iii) preparing an agglomerant-symmetrical wettality composite electrode by bonding the catalyst with high activity on the substrate by polyvinylidene fluoride and nitrogen-nitrogen-dimethylformamide, and (iv) applying carbon-base asymmetric wettability complex electrode in the electrochemical reactor for oxygen reduction and high-efficiency hydrogen dioxide. USE - The method is useful for preparing three-dimensional porous high oxygen transmission carbon-based substrate non-symmetrical wettability composite electrode, which is useful in paper pulp bleaching, chemical synthesis, textile and waste water treatment. ADVANTAGE - The method provides carbon-based asymmetric wettability composite electrode with high activity and low catalyst load three-dimensional porous high oxygen transmission carbon base substrate of green recyclable use. The electrode has high hydrogen peroxide yield and low electric energy consumption, is economical and environmentally friendly, good development prospect, simple process flow, and convenient operation, and large safety.