| abstract |
An object of the present invention is to develop a conductive ink capable of reducing the use of an organic solvent as much as possible and reducing the amount of a dispersant that is not necessary after circuit formation as much as possible. Disclosed is a conductive ink comprising a powder of a metal nobler than titanium having an average particle diameter of 10 to 100 nm, a dispersion medium mainly composed of water, and a dispersant. In particular, the metal to be used is preferably selected from Au, Ag, Pt, Pd, Cu, Ni, Co and Fe, and the dispersant is preferably a low molecular weight molecule having a molecular weight of 1000 or less. The production method involves stirring and reacting an aqueous solution containing target metal ions, titanium ions containing trivalent titanium ions, a complexing agent, and a dispersant, and collecting the generated metal powder. In this method, water and a dispersion medium for adjustment are added. [Selection] Figure 1 |