▎ 摘　　要

NOVELTY - Preparing phthalocyanine metal electrode modified by an ionic liquid involves soaking the carrier and the electrode material with hydrochloric acid respectively, and then rinsing with ethanol and deionized water until the pH is neutral, dispersing the metal phthalocyanine compound in dimethylformamide (DMF), and then impregnating the resulting mixed solution and carrier, drying, and then treating with plasma to obtain a catalyst. The obtained catalyst and 5 wt.% nafion solution are poured into an organic solvent, and ultrasonically treated to assist the solute to disperse uniformly in the organic solvent to obtain a catalyst slurry. The catalyst slurry is applied uniformly on the electrode material, and dried the coated electrode material under an infrared lamp to obtain the electrode A. The carrier is mesoporous carbon, graphene, carbon nanotube or graphyne. USE - Method for preparing phthalocyanine metal electrode modified by an ionic liquid for producing hydrogen peroxide by electrochemical oxygen reduction. ADVANTAGE - The method enables to prepare phthalocyanine metal electrode modified by ionic liquid that has high activity, high selectivity, and good stability. DETAILED DESCRIPTION - Preparing phthalocyanine metal electrode modified by an ionic liquid involves soaking the carrier and the electrode material with hydrochloric acid respectively, and then rinsing with ethanol and deionized water until the pH is neutral, dispersing the metal phthalocyanine compound in dimethylformamide (DMF), and then impregnating the resulting mixed solution and carrier, drying, and then treating with plasma to obtain a catalyst. The obtained catalyst and 5 wt.% nafion solution are poured into an organic solvent, and ultrasonically treated to assist the solute to disperse uniformly in the organic solvent to obtain a catalyst slurry. The catalyst slurry is applied uniformly on the electrode material, and dried the coated electrode material under an infrared lamp to obtain the electrode A. The carrier is mesoporous carbon, graphene, carbon nanotube or graphyne, where mass ratio of the metal phthalocyanine compound and the carrier is 1: 4-10. The ionic liquid is dissolved in an organic solvent to obtain an ionic liquid mixture. The electrode A is placed in the ionic liquid mixed solution, and the resulting mixed solution is put at 60-80℃ and concentrated under stirring to remove most of the solvent, and then dried in a vacuum oven. The dried material is the phthalocyanine metal electrode modified by ionic liquid for electrochemical oxygen reduction to prepare hydrogen peroxide. The ionic liquid is mixtures of the ionic liquids of formula (I), where R1=H, CH3 or C2H5;R2=CnH2n+1;n=integer of 1-6;R3=CkH2k+1;k=integer of 1-16; and X-=hexafluorophosphate, bis trifluoromethanesulfonate imide and tetrafluoro borate.