Low Temperature Atmospheric Pressure Atomic Layer Deposition (ALD) of Graphene on Stainless Steel Substrates as BPP Coating
AssigneeGM Global Technology Operations LLC
InventorsSmuruthi KAMEPALLI, Balasubramanian LAKSHMANAN
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Abstract
A flow field plate for a fuel cell includes an electrically conductive substrate at least partially defining a plurality of flow channels. A carbon layer is disposed over the flow field plate. The carbon layer includes graphene, carbon nanotubes, or combinations thereof and has a thickness less than about 10 nanometers. Chemical vapor deposition and atomic layer deposition processes for forming graphene layers on a flow field plate are also described.
Claims20
A flow field plate for a fuel cell, the flow field plate comprising:
- an electrically conductive substrate at least partially defining a plurality of flow channels;
- and
- a carbon layer disposed over the flow field plate, the carbon layer including a component selected from the group consisting of graphene, carbon nanotubes, and combinations thereof, the carbon layer having a thickness less than about 10 nanometers.
A method comprising:
- contacting an electrically conductive substrate with a vapor of a C1-18 hydrocarbon-containing compound at a temperature from 350° C. to about 600° C. to form a carbon layer, the carbon layer including from 1 to multiple graphene monolayers, the electrically conductive substrate at least partially defining a plurality of gas flow channels.
A method comprising of deposition of graphene monolayers at pressure range equal to or less than 1 torr to atmospheric pressure.
Dependencies are inferred from the claim text.