Transparent substrates comprising three-dimensional porous conductive graphene films and methods for making the same
AssigneesCorning Incorporated, ICFO—The Institute of Photonic Science, Institució Catalana De Recerca I Estudis AvançAts (Icrea)
InventorsConnie Li, Xinyuan Liu, Miriam Marchena Martin-Francés, Valerio Pruneri, Wageesha Senaratne, Zhen Song, Kamal Kishore Soni
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Abstract
Disclosed herein are graphene coatings characterized by a porous, three-dimensional, spherical structure having a hollow core, along with methods for forming such graphene coatings on glasses, glass-ceramics, ceramics, and crystalline materials. Such coatings can be further coated with organic or inorganic layers and are useful in chemical and electronic applications.
Claims29
A method of forming an article, the method comprising:
- (a) depositing a metal from a source onto a surface of a substrate to form a metallic layer comprising metal structures;
- and
- (b) forming a porous, three-dimensional construction having an average surface area from about 200 m2/g to about 2200 m2/g, a porosity of from about 90% to about 99.6%, and with at least one three-dimensional graphene structure having at least a partially hollow core via chemical vapor deposition of a graphene layer on the metallic layer using a carbon-source gas, wherein:
- i) the at least one three-dimensional graphene structure comprises five or less layers of graphene;
- and ii) the at least one three-dimensional graphene structure has an average diameter from about 30 nm to about 500 nm, the at least partially hollow core formed by at least one of at least partially removing one of the metal structures by thermal or chemical processes or using a nanoshell.
A method of forming an article, the method comprising:
- (a) depositing a metal from a source onto a surface of a substrate to form a metallic layer comprising metal structures;
- and
- (b) forming a porous, three-dimensional construction having an average surface area from about 200 m2/g to about 2200 m2/g and with at least one three-dimensional graphene structure having at least a partially hollow core via chemical vapor deposition of a graphene layer on the metallic layer using a carbon-source gas, wherein:
- the at least one three-dimensional graphene structure comprises five or less layers of graphene,
- the at least one three-dimensional graphene structure has an average diameter from about 30 nm to about 500 nm, and
- for each three-dimensional graphene structure, the at least partially hollow core of the three-dimensional graphene structure is formed by partially removing one of the metal structures by thermal or chemical processes and subsequently modifying remaining metal to create a core of the three-dimensional graphene structure.
A method of forming an article, the method comprising:
- (a) depositing a metal from a source onto a surface of a substrate to form a metallic layer comprising metal structures;
- and
- (b) forming a porous, three-dimensional construction having an average surface area from about 200 m2/g to about 2200 m2/g and with at least one three-dimensional graphene structure having at least a partially hollow core via chemical vapor deposition of a graphene layer on the metallic layer using a carbon-source gas, wherein:
- i) the at least one three-dimensional graphene structure comprises five or less layers of graphene;
- and ii) the at least one three-dimensional graphene structure has an average diameter from about 30 nm to about 500 nm, the at least partially hollow core formed using a nanoshell.
Dependencies are inferred from the claim text.