▎ 摘　　要

NOVELTY - A high density aza graphene film comprises 7.88-7.94% pyrrole nitrogen form doping and has density of 1.69-1.72 gcm-3. USE - High density aza graphene film for lightweight vehicles and portable electronic device. ADVANTAGE - The high density aza graphene film has mass specific capacity reaching to 262 F/g. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the graphene film, which involves using coagulation bath comprising ammonium bicarbonate, water and ethanol and graphene oxide film.