A facile route to synthesize Cu@Ag core-shell nanoparticles (NPs) were developed via the reduction of silver salt by L-ascorbic acid on the surface of the Cu core as the seed. The obtained nanoparticles have relatively uniform size and morphology with high monodispersity even in large quality and possess outstanding antioxidation performance under ambient atmosphere. The well-dispersed stable Cu@Ag conductive ink with suitable viscosity and liquidity for the inkjet printing was prepared through dispersing the Cu@Ag NPs in a mixed organic solvent.
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