▎ 摘　　要

NOVELTY - Preparing graphene composite fiber electrode comprises (i) adopting dehydration condensation method to prepare hexaazatrinaphthalene powder, (ii) preparing graphene oxide nanosheet dispersion, (iii) ultrasonically dispersing hexaazatrinaphthalene powder and the graphene oxide nanosheet dispersion liquid for 25-45 minutes, (iv) after the ultrasonic dispersion is completed, adding ascorbic acid, placing the mixed solution in a sealed container, and fully reacting, and (v) drying at 45-55degrees Celsius. USE - The graphene composite fiber electrode is useful for linear energy storage device (claimed), e.g. cochlear implants and wear-resistant electronic products e.g. watch, bracelet, and headphones, and for energy storage of aerospace device. ADVANTAGE - The electrode has high flexibility, high weavability, and excellent electrical conductivity, and is suitable in linear energy storage fields with high volume requirement.