Gas diffusion electrodes with segmented catalyst layers for CO2 reduction
AssigneeUniversity of Cincinnati
InventorsJingjie Wu, Xiaojie She, Tianyu Zhang
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Abstract
A tandem electrode for electrochemically reducing carbon dioxide is described. The electrode includes a first distinct catalyst layer and a second distinct catalyst layer. The first distinct catalyst layer is made of a C1 hydrocarbon or C2+ product selective catalyst and the second distinct catalyst layer is comprised of a CO selective catalyst. In one embodiment, the second distinct catalyst layer is concentrated at one end of the tandem electrode. In another embodiment, the tandem electrode also includes a microporous layer and a substrate layer.
Claims20
A tandem electrode for electro-reduction of a carbon dioxide gas comprising a first distinct catalyst layer and a second distinct catalyst layer, wherein the first distinct catalyst layer comprises a C1 hydrocarbon or C2+ product selective catalyst and the second distinct catalyst layer comprises a CO selective catalyst;
- wherein the second distinct catalyst layer is concentrated at one lateral end of the tandem electrode, and further, wherein the first distinct catalyst layer has a top surface and the second distinct catalyst layer is located on the top surface and partially covers the first distinct catalyst layer.
A method of electrochemically reducing carbon dioxide (CO2) comprising:
- a. exposing a gas comprising CO2 to a tandem electrode comprising a first distinct catalyst layer and a second distinct catalyst layer, wherein the first distinct catalyst layer comprises a C1 hydrocarbon or C2+ product selective catalyst and the second distinct catalyst layer comprises a CO selective catalyst;
- wherein the second distinct catalyst layer is concentrated at one lateral end of the tandem electrode, wherein the second distinct catalyst layer comprises multiple sections, and further, wherein each section is distinct from other sections and from the first distinct catalyst layer;
- b. applying a voltage to the tandem electrode;
- and c. producing a reduction product of carbon dioxide.
A tandem electrode for electro-reduction of a carbon dioxide gas comprising a first distinct catalyst layer and a second distinct catalyst layer, wherein the first distinct catalyst layer comprises a C1 hydrocarbon or C2+ product selective catalyst and the second distinct catalyst layer comprises a CO selective catalyst;
- wherein the second distinct catalyst layer is concentrated at one lateral end of the tandem electrode, wherein the second distinct catalyst layer comprises multiple sections, and further, wherein each section is distinct from other sections and from the first distinct catalyst layer.
Dependencies are inferred from the claim text.