▎ 摘　　要

NOVELTY - Preparing silver loaded nitrogen-doped graphene comprises mixing silver nitrate, ammonia and functional graphene and placing in a high-temperature reactor, reacting at 100-200 degrees C for 1-12 hours, the functionalized graphene is from graphene oxide, sulfonated graphene, aminated graphene, polyacrylic acid modified graphene oxide and/or polyacrylamide modified graphene oxide, the concentration of the functionalized graphene solution is 0.5-10 mg/ml. USE - The silver loaded nitrogen-doped graphene is used in air batteries (claimed). ADVANTAGE - The preparation process is simple and easy, consumes less energy, is environmentally- friendly and has good oxygen reducing catalytic property.