▎ 摘　　要

Herein, we developed silver nanoparticles supported on a nitrogen doped graphene (Ag/N-RGO) aerogel by a facile one-step hydrothermal method as an efficient ORR electrocatalyst. The Ag/N-RGO showed remarkable catalytic activity and stability in the alkaline electrolyte. The as-proposed facile strategy to synthesize Ag/N-RGO is promising for the development of inexpensive ORR electrocatalysts.