▎ 摘　　要

NOVELTY - Preparation of oxide-coated electrode includes cleaning substrate with metal foam, soaking in water, boiling, cooling, filtering, soaking in ethanol solution, drying, taking graphene nanomaterial, silicone resin and alcohol solution, stirring, configuring to graphene nano suspension, molding, drying, performing high temperature sintering, placing nano metal oxide in aqueous ethanol solution, adding dispersant, modifier and adhesive, performing ultrasonic stirring to obtain metal oxide solution, and spraying metal oxide solution to foam surface. USE - Method for preparing oxide-coated electrode used for wastewater treatment. ADVANTAGE - The method has simple process, strong operability, wide raw material source and low cost. DETAILED DESCRIPTION - Preparation of oxide-coated electrode involves cleaning substrate with metal foam, soaking in water, boiling, stirring at 300-1200 revolutions/minute for 20-30 minutes, cooling, filtering, soaking in ethanol solution, drying at 50-75 degrees C, taking graphene nanomaterial, silicone resin and alcohol solution, stirring, configuring to graphene nano suspension, molding, drying, performing high temperature sintering, placing nano metal oxide in aqueous ethanol solution, adding dispersant, modifier and adhesive, performing ultrasonic stirring to obtain metal oxide solution, spraying metal oxide solution to foam surface at spraying speed of 20-50 mg/cm2, performing high temperature sintering at 280-350 degrees C, performing densification and cooling.