CO2 reduction toward methane
AssigneeThe Regents of the University of Michigan
InventorsPengfei Ou, Jun Song, Baowen Zhou, Zetian Mi
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Abstract
An electrode of a chemical cell includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, each conductive projection of the array of conductive projections having a semiconductor composition for reduction of carbon dioxide (CO2) in the chemical cell, and a catalyst arrangement disposed along each conductive projection of the array of conductive projections, the catalyst arrangement including a copper-based catalyst and an iron-based catalyst for the reduction of carbon dioxide (CO2) in the chemical cell.
Claims25
An electrode of a chemical cell, the electrode comprising:
- a substrate having a surface;
- an array of projections supported by the substrate and extending outward from the surface of the substrate;
- and
- a catalyst arrangement disposed along each projection of the array of projections, the catalyst arrangement comprising a copper-based catalyst and an iron-based catalyst for the chemical cell;
- wherein the copper-based catalyst comprises a plurality of copper nanoparticles.
An electrode of a chemical cell, the electrode comprising:
- a substrate having a surface;
- an array of projections supported by the substrate and extending outward from the surface of the substrate;
- and
- a catalyst arrangement disposed along each projection of the array of projections, the catalyst arrangement comprising a copper-based catalyst and an iron-based catalyst for the chemical cell;
- wherein:
- the substrate comprises a semiconductor material;
- and
- the semiconductor material is configured to generate charge carriers upon absorption of solar radiation such that the chemical cell is configured as a photoelectrochemical system.
A photoelectrode for a photoelectrochemical cell, the photoelectrode comprising:
- a substrate comprising a light absorbing material, the light absorbing material being configured to generate charge carriers upon illumination;
- an array of conductive projections supported by the substrate, each conductive projection of the array of conductive projections being configured to extract the charge carriers from the substrate;
- copper-based catalysts disposed across each conductive projection of the array of conductive projections;
- and
- a distribution of an iron-based catalyst disposed adjacent to the copper-based catalysts in a co-catalyst arrangement;
- wherein the copper-based catalysts are configured as copper nanoparticles.
A method of fabricating an electrode of an electrochemical system, the method comprising:
- growing an array of projections on a substrate;
- and
- depositing a catalyst arrangement along each projection of the array of projections, the catalyst arrangement comprising a copper-based catalyst and an iron-based catalyst;
- wherein the copper-based catalyst comprises a plurality of copper nanoparticles.
Dependencies are inferred from the claim text.