Nitrogen doping has been an effective way to tailor the properties of graphene and render its potential use for various applications. Nitrogen-doped graphene as a new nano-sized material has attracted great interest due to outstanding electrical and catalytic properties. Herein, we developed the facile solution-based synthetic method for the large-scale preparation of high-quality nitrogen-doped graphene. Owing to good structural restoration and high populations of hetero atoms, the resultant nitrogen-doped graphene exhibits huge potentials in energy conversion and storage applications.