▎ 摘　　要

NOVELTY - A nitrogen-doped graphene quantum dot/grapheme-based super capacitor electrode material comprises foam nickel as the substrate and graphene and graphene quantum dots loaded on the foam nickel. USE - Nitrogen-doped graphene quantum dot/grapheme-based super capacitor electrode material. ADVANTAGE - The nitrogen-doped graphene quantum dot/grapheme-based super capacitor electrode material can be prepared with high specific energy and stable working window, and high stability and high power in power supply occasion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing nitrogen-doped graphene quantum dot/grapheme-based super capacitor electrode material.