Manufacture of graphene and large graphene electrodes
OwnerRodolfo Antonio M. Gomezinventor
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Abstract
The present invention concerns the fabrication of large graphene electrodes. In the electrolysis of water or in the operation of a hydrogen fuel cell. the electrical conductivity is important to reduce the energy consumption. Titanium electrodes are widely used but their conductivity is only about 4% of copper. Graphene is 70% more conductive than copper and is chemically stable provided there are no metal ions in the electrolyte. By irradiating a mixture of carbon dioxide gas and hydrogen gas quantities of graphene can readily be produced which can then be manufactured into large electrodes by way of the described press formation.
Claims20
A method for converting carbon dioxide to graphene, the method including,
- injecting a mixture of carbon dioxide gas and hydrogen gas into a reaction vessel;
- the reaction vessel including a plurality of rods of catalytic material;
- irradiating the mixture of carbon dioxide gas and hydrogen gas with laser radiation from a laser to heat the reaction vessel to a temperature in the range of 400° C. and 900° C.;
- to convert the carbon dioxide gas mixture to a solid graphene powder.
The method of claim 2, wherein the plurality of rods of catalytic material are rods made from a catalytic material of iron oxide or strontium oxide.
A method of forming a mesh electrode the method including:
- preparing and assembling a plurality of sheets of electrically conductive material to form a stack of sheets;
- compressing the stack of sheets using a press to produced a compressed stack of sheets, the press having pressing plates with a surface having a pattern to press openings into the compressed stack of sheets to produce a compressed stack of sheets with a mesh pattern.
Dependencies are inferred from the claim text.