▎ 摘　　要

NOVELTY - Preparing graphene nano-sieve film involves putting the cleaned sheet-shaped metal substrate in the concentration of 0.10mg/mL oxidized graphene aqueous solution at 40-80 degrees C for 1-12 hours to obtain graphene-metal composite sheet. The obtained sheet is washed with clean water and dried to obtain graphene-metal sheet composite. The obtained sheet is calcined under inert atmosphere at 400-1100 degrees C for 0.5-3 hours and cooled. The obtained product is cleaned by hydrochloric acid to obtain graphene nano-sieve film. USE - Method for preparing graphene nano-sieve film used in flexible electrode material (claimed). ADVANTAGE - The method enables to prepare graphene nano-sieve film increases sheet metal area and controls of nano-sieve film aperture.