Method for producing a dendritic silver-coated copper powder, and dendritic silver-coated copper powder with copper paste using, conductive paint, conductive sheet

摘要

PROBLEM TO BE SOLVED: To provide a method for producing silver coat copper powder, in dendritic silver coat copper powder, capable of industrially efficiently controlling a specific surface area value to a suitable range at a low cost.;SOLUTION: Provided is a method for producing dendritic silver coat copper powder comprising: a step where dendritic copper powder is precipitated from a sulfuric acid acidic solution to the surface of the cathode by an electrolytic process; and a step where the dendritic copper powder is coated with silver, in which the sulfuric acid acidic solution includes: copper ions; and an alkylene oxide derivative of 1 to 10,000 mg/L.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT