US 11,325,151 B2 · Process for coating a substrate with a carbon-based material

Abstract

A coating process is described that coats a coil-to-coil continuous substrate with a graphene-like coating. The coating process includes cleaning and activating a substrate, applying a graphene oxide dispersion to the substrate, drying the coated sub-strate, and exposing the dried coating to VUV radiation under a dry atmosphere. The atmosphere for the last step includes one or more inert gases and optionally one or more reactive gases to repair defects in the coating and/or to functionalize the coating. This coating process allows for the formation of a polygranular graphene-like coating intimately in contact with the substrate. The graphene-like coating coats the substrate with multiple monolayers of graphene in a continuous manner.

Claims18

Dependent claims

A process for coating a substrate with a functionalized graphene-like coating comprising the steps of:

cleaning and activating a substrate by simultaneous exposure of the substrate surface to radiation having a wavelength of about 10 nm to about 200 nm and to an atmosphere that comprises oxidizing radical species at or above atmospheric pressure;
coating the clean and activated substrate with a GO (graphene oxide) coating;
and
exposing the GO coating to radiation having a wavelength of about 10 nm to about 200 nm under an atmosphere comprising one or more inert gases and one or more reactive gases at or above atmospheric pressure to form the functionalized graphene-like coating, wherein the functionalized graphene-like coating comprises a functionalized mixture of r-GO (reduced graphene oxide) and graphene.

1 more element

Dependencies are inferred from the claim text.

Process for coating a substrate with a carbon-based material

Life of this patent

Process for coating a substrate with a carbon-based material

Life of this patent

Abstract

Claims18