▎ 摘 要
NOVELTY - N-doped graphene is obtained by substituting at least one of carbon atom by nitrogen. USE - N-doped graphene is used for ultracapacitor (claimed). ADVANTAGE - The N-doped graphene is manufactured, by simple method. The ultracapacitor comprising the N-doped graphene has durability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of N-doped graphene.