METHOD FOR PRODUCING COPPER POWDER, COPPER POWDER, AND COPPER PASTE

摘要

Provided is a method for producing, without using an expensive noble metal or a polymer dispersant, a copper powder which has a uniform particle size distribution and excellent dispersibility, and which is free from combined particles and coarse particles. The present invention is a method for producing a copper powder, which is characterized by comprising: a first step wherein an alkali hydroxide is added into a mixture of an aqueous copper salt solution containing divalent copper ions and a reducing saccharide serving as a first reducing agent, so that a suspension containing cuprous oxide particles is obtained; and a second step wherein a reducing agent is added into the suspension containing cuprous oxide particles, so that fine copper particles are produced.