▎ 摘　　要

NOVELTY - Compound type dispersant, comprises distilled water, nonionic surfactant, anionic surfactant and wetting agent, where the nonionic surfactant is a Tween(Polyoxyethylene sorbitan monolaurate) compound, and the anionic surfactant is a hydrocarbon sulfonate compound. USE - Compound type dispersant for mixed electroplating solution. ADVANTAGE - The composite dispersant can effectively block or reduce the agglomeration of graphene in the dispersion. The graphene dispersion is uniform and stable. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a preparation method of composite type dispersant; a mixed electroplating solution; and a preparation method of mixed electroplating solution.