▎ 摘　　要

NOVELTY - Method for preparing platinum-lead/nitrogen-doped graphene composite nanomaterial involves adding nitrogen-doped graphene to deionized water, ultrasonically mixing to obtain a suspension, adding potassium chloroplatinate and lead nitrate to suspension under the protection of argon, ultrasonically mixing to obtain a mixed solution, adding sodium borohydride to the mixed solution, ultrasonically reacting, centrifuging the reaction product, washing and vacuum drying to obtain platinum-lead/nitrogen-doped graphene composite nanomaterial. USE - Method is useful for preparing platinum-lead/nitrogen-doped graphene composite nanomaterial, which is useful in electrochemical catalysis application (all claimed). ADVANTAGE - The method ensures convenient preparation of the platinum-lead/nitrogen-doped graphene composite nanomaterial with high reproducibility and electrochemical activity. DETAILED DESCRIPTION - Method for preparing platinum-lead/nitrogen-doped graphene composite nanomaterial involves adding 1 pt. wt. nitrogen-doped graphene to 1-4 pts. wt. deionized water, ultrasonically mixing for 30-60 minutes to obtain a suspension, adding potassium chloroplatinate and lead nitrate to suspension under the protection of argon, ultrasonically mixing to obtain a mixed solution, adding 1.6-2.4 pts. wt. sodium borohydride to the mixed solution, ultrasonically reacting for 20-40 minutes, centrifuging the reaction product, washing and vacuum drying to obtain platinum-lead/nitrogen-doped graphene composite nanomaterial. An INDEPENDENT CLAIM is included for the platinum-lead/nitrogen-doped graphene composite nanomaterial prepared by the above method.