▎ 摘　　要

NOVELTY - This new utility model claims of a kind of one air cathode. The air cathode comprising the catalyst layer, the catalyst layer containing nitrogen doped graphene, and diffusion layer. Therefore, can be of nitrogen doped graphene as the cathode air supply with good catalyze property of catalyst layer, and the air cathode preparation process is simple, catalyst layer without need to add binder and carry out compression forming so as to increase electrode performance can be of the air cathode.