▎ 摘　　要

NOVELTY - Preparing nitrogen-doped graphene nano rolling three dimensional macroscopic material comprises (i) mixing graphene oxide solution with amide solvent, heating and sealing mixture to obtain hydrogel, (ii) placing hydrogel in deionized water and replacing amide solvent not involved in reaction step (i) to obtain water after replacement of hydrogel, and (iii) freezing and drying hydrogel to obtain final product. USE - The method is useful for preparing nitrogen-doped graphene nano rolling three dimensional macroscopic material (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nitrogen-doped graphene nano rolling three dimensional macroscopic material is obtained by above method.