▎ 摘　　要

NOVELTY - A graphene-metal base composite material is prepared by mixing graphene oxide solution and metal salt solution, adding hydrazine hydrate to carry out reduction reaction; washing reaction product with deionized water and absolute ethanol and removing solvent, obtaining composite powder of graphene load metal and drying; putting obtained composite powder into absolute ethanol, crushing and dispersing, adding nanometal powder, ultrasonic dispersing and drying to obtain graphene-metal based composite powder; and plasma sintering, and obtaining graphene-metal base composite material. USE - Preparation method of graphene-metal base composite material. ADVANTAGE - The method obtains graphene-metal base composite material which does not generate agglomeration and is not oxidized. DETAILED DESCRIPTION - Preparation method of graphene-metal base composite material comprises: (A) ultrasonically dispersing graphene oxide in deionized water and ultrasonically dispersing metal salt in anhydrous ethanol; (B) mixing graphene oxide solution and metal salt solution, adding hydrazine hydrate to carry out reduction reaction; (C) washing reaction product with deionized water and absolute ethanol and removing solvent, obtaining composite powder of graphene load metal and drying; (D) putting obtained composite powder into absolute ethanol, crushing and dispersing, adding nanometal powder, ultrasonic dispersing and drying to obtain graphene-metal based composite powder; and (E) subjecting graphene-metal based composite powder under vacuum state, plasma sintering, and obtaining graphene-metal base composite material.