Preparation and Direct Writing Printing of Graphene-silver Nanoparticle Composite Ink
The research and development of high-performance conductive inks is the key to realize the continuous development of printed electronics.The two-dimensional structure of graphene makes it inherently flexible and conductive,but it is prone to agglomeration and stacking due to the interaction of van der Waals forces between the lamellae,and the introduction of metal nanoparticles through the composite approach can prevent agglomeration from occurring as well as reduce the contact resistance between graphene lamellae,so as to make the conductivity of the composite material enhanced.in this work,composite inks consisting of graphene(rGO)and silver nanoparticles(AgNPs)were prepared by in-situ chemical reduction to achieve a uniform distribution of AgNPs on rGO nanosheets.The ink was printed on the substrate by direct writing printing technique,and the resulting printed pattern has excellent electrical conductivity with a typical resistivity of 1.48×10-6 Ω·m.After hundreds of bending cycles,the resistance value of the printed pattern increases slightly,indicating that the patterns have excellent stability and mechanical flexibility.This is of great significance for the development of printed electronics.
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维普
