▎ 摘　　要

Three-dimensional nitrogen-doped graphene aerogel (N-GA) is facilely synthesized via a hydrothermal method combined with freeze drying. When it is used as an anode for lithium-ion battery, N-GA possesses larger surface area (S-BET=379.1 m(2) g(-1)), higher reversible capacity (535.3 mAh g(-1) in the 100th cycle) and more stable cycling performance compared with those of pristine GA, which could result from the structural defects caused by the nitrogen doping. (C) 2015 Elsevier B.V. All rights reserved.