▎ 摘　　要

NOVELTY - Nano graphene platelet-based conductive ink that is printable, comprises: pristine nano graphene platelets, where each of the platelets has never previously been oxidized, comprises a graphene sheet or multiple graphene sheets, and has an average thickness not greater than 100 nm; and a liquid medium in which the nano graphene platelets are dispersed. The nano graphene platelets occupy a proportion of at least 0.001 vol.% based on the total ink volume. The ink is formulated so that it is capable of being printed in patterns by means of ink jet printing or screen printing. USE - The nano graphene platelet-based conductive ink is useful: in a patterned radio-frequency identification device; for coating thin film, flexible substrate, or paper for electromagnetic interference shielding or electrostatic charge dissipation applications; in a thermal interface material; and in a printed electronic component or a thermally or electrically conductive pattern (all claimed). ADVANTAGE - The nano graphene platelet-based conductive ink: after printing onto a solid substrate to form a solid component, provides a thermal conductivity of at least 10 W/(mK), preferably at least 200 W/(mK); has a viscosity of less than 500 mPaS, preferably less than 30 mPaS, or less than 200 PaS and contains not less than 20 vol.% of nano graphene platelets (claimed); is less expensive; provides printed elements that are highly electrically and/or thermally conductive; provides more efficient thermal management material; and provides a cost-effective way to achieve patterns of various materials on both rigid and flexible substrates. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a patterned radio-frequency identification device comprised of the ink printed on a substrate; (2) a thin film, flexible substrate, or paper coated with the ink for electromagnetic interference shielding or electrostatic charge dissipation applications, where the ink is patterned; (3) a thermal interface material comprising the ink, where the ink is printed onto a plastic, elastomer or metal substrate, the substrate may be planar or non-planar, and the printed ink has a thermal conductivity greater than 10 W/m.K; and (4) a printed electronic component or a thermally or electrically conductive pattern, comprising pristine nano graphene platelets, and an optional binder material and/or matrix material, where the component or conductive pattern is printed on a substrate comprising polymer film, paper, or metal, and the pristine graphene platelets occupy a proportion of at least 3 vol.% based on the total volume of platelets, binder material and matrix material.