Conductive adhesives (CAs) providing reliable connections between electronic components, have been widely used in solar cells [1], light emitting diodes (LEDs) [2], radio frequency components [3], and printed & wearable circuits, etc.[4-6].Basically,CAs are mainly composed of conductive fillers and resin, which give the mechanical, adhesive function, and the conductive path,respectively [7].Among conductive fillers with high conductivity,such as carbon materials [7,8], and metals [4,5,9,10], are the key component [9,10], determining the feature and cost of the CAs.