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US 10,679,816 B1Granted
Thermionic cathode with a graphene sealing layer and method of making the same
AssigneeTriad National Security, LLC
InventorsNathan Moody, Gautam Gupta, Aditya Mohite
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Abstract
According to an embodiment of the present disclosure, a thermionic cathode includes: a cathode body having an outer surface, and a sealing layer including one or more graphene sheets on the outer surface of the cathode body. According to another embodiment of the present disclosure, a method for manufacturing a thermionic cathode includes: depositing a sealing layer including one or more graphene sheets on an outer surface of a cathode body.
Claims9
A method for manufacturing a thermionic cathode, the method comprising:
- providing a cathode body, the cathode body having an outer surface, and
- depositing a sealing layer comprising 1 to 20 graphene sheets on the outer surface of the cathode body,
- wherein the graphene sheets conform to the outer surface of the cathode body.
A method for manufacturing a thermionic cathode, the method comprising:
- depositing a sealing layer comprising 1 to 20 graphene sheets on an outer surface of a cathode body,
- wherein the depositing of the sealing layer comprises:
- depositing a graphene layer on a carrier substrate to form a graphene layer-carrier laminate,
- applying a polymer film on the graphene layer to form a polymer film-graphene layer-carrier laminate,
- removing the carrier substrate from the polymer film-graphene layer-carrier laminate to form a polymer film-graphene layer laminate,
- attaching the polymer film-graphene layer laminate on the outer surface of the cathode body, and
- removing the polymer film from the polymer film-graphene layer laminate, and
- wherein the thermionic cathode comprises the sealing layer and the cathode body.
5 more elements
Dependencies are inferred from the claim text.