Nano graphene platelet-based conductive inks and printing process

摘要

A nano graphene platelet-based conductive ink comprising: (a) nano graphene platelets (preferably un-oxidized or pristine graphene), and (b) a liquid medium in which the nano graphene platelets are dispersed, wherein the nano graphene platelets occupy a proportion of at least 0.001% by volume based on the total ink volume and a process using the same. The ink can also contain a binder or matrix material and/or a surfactant. The ink may further comprise other fillers, such as carbon nanotubes, carbon nano-fibers, metal nano particles, carbon black, conductive organic species, etc. The graphene platelets preferably have an average thickness no greater than 10 nm and more preferably no greater than 1 nm. These inks can be printed to form a range of electrically or thermally conductive components or printed electronic components.

主权项

1. A process for forming a printed electronic component or thermally or electrically conductive pattern on a substrate comprising the steps of: applying to a substrate by printing in the form of a thermally or electrically conductive pattern or electronic component, an ink composition including (a) nano graphene platelets wherein each of the platelets comprises a graphene sheet or multiple graphene sheets that are un-oxidized or pristine graphene and the platelets have a thickness no greater than 100 nm, and (b) a liquid medium in which said nano graphene platelets are dispersed, wherein said nano graphene platelets occupy a proportion of at least 0.001% by volume based on the total ink volume, to the surface of a substrate.