Electrolytic Synthesis and Tolyltriazole Modification of Dendritic Silver Powders for High‐performance Electrically Conductive Adhesives

Abstract

AbstractDendritic silver particles (DSPs) were synthesized by a facile electrolysis method based on the self‐made silver methanesulfonic as an electrolyte and the surface of DSPs was coated with methyl‐1H‐benzotriazole to prepare the surface‐modified DSPs. Dendritic feature with a trunk and nano‐branches is confirmed by scanning electron microscopy. At temperatures above 200 °C, the sintering phenomenon is discovered at the nano‐branches of DSPs. As the prepared DSPs are introduced into the commercial micron‐scale silver particles‐based electrically conductive adhesives (ECAs), the electrical resistivity can be significantly reduced to 5.63×10−5 Ω cm, which is superior to the traditional conductive adhesives derived from the pure micron‐scale silver particles, implying the high application value of DSPs for high‐performance conductive adhesive.