▎ 摘　　要

NOVELTY - Strong pi - pi conjugated defective graphene and iron phthalocyanine composite material preparation involves dispersing single-layer defect graphene of certain quality ultrasonically in absolute ethanol to obtain a uniformly dispersed single-layer defect graphene suspension. The twice-defective graphene quality iron phthalocyanine is dispersed ultrasonic in anhydrous ethanol to obtain a uniformly dispersed ultra-thin nano-sheet suspension of iron phthalocyanine. The defective graphene suspension is added dropwise to the iron phthalocyanine suspension under ultrasonic conditions. The mixed suspension is sonicated for 2 hours, slowly stirred for 2 hours, and then dried at 60 degrees C to get the strong conjugated composite material of defective graphene and iron phthalocyanine. USE - Method for preparing strong pi - pi conjugated defective graphene and iron phthalocyanine composite material for preparing oxygen reduction electrocatalyst. ADVANTAGE - The method prepares the strong pi - pi conjugated defective graphene and iron phthalocyanine composite material in a simple, cost-effective and eco-friendly manner with high catalytic activity and stability under alkaline conditions, and excellent oxygen reduction activity in electrocatalyst.