▎ 摘　　要

NOVELTY - Conductive ink composition comprises a slurry of copper nanoparticles in water. USE - The composition is useful in printing conductive ink which is used in an antenna printed (all claimed), and electronic circuits. ADVANTAGE - The composition: provides excellent electrical, thermal, and mechanical properties; and has tunable viscosity for hybrid printing, high electrical conductivity without high-temperature annealing, environmental stability for a long lifetime, and/or scalability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: making (m1) the composition comprising contacting a copper salt, an aliphatic amine, D-glucose, and water to form a reaction mixture, and heating the reaction mixture to form the composition; and printing (m2) conductive ink comprising extruding the composition onto a substrate, and washing the extruded ink with an acid to remove residual aliphatic amine.