▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide-silver (RGO/Ag) composite nano material comprises (a) taking certain quality of graphene nanomaterials and dispersing in ethanol solution, adding a certain amount of silane coupling agent, and stirring for a period of time; (b) separating precipitate obtained from the reaction medium by centrifugation after the reaction, and washing with deionized water and ethanol successively, dispersing it again into a certain concentration of polyaldehyde solution and stirring for a period of time; (c) preparing silver ammonia solution with silver nitrate and ammonia water, adding aldehyde-based functionalized graphene nanomaterials to the silver ammonia solution, and reacting at a certain temperature for a certain time. USE - The method is useful for preparing RGO/Ag composite nano material. ADVANTAGE - The method does not require product purification, is fast and intuitive, has simple operations, a fast speed and gives high yield; RGO/Ag composite nanomaterial has good dispersibility, can reduce the amount of silver powder used by 50-70%, saves costs while maintaining conductive efficiency, is clean, environmentally friendly, and suitable for widespread application.