Co2 electroreduction to multi-carbon products in strong acid
AssigneesTotalenergies Onetech, The Governing Council of the University of Toronto
InventorsJianan Erick HUANG, Fengwang LI, Adnan OZDEN, David SINTON, Edward SARGENT
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Abstract
The present disclosure relates to an electrode for CO2 electroreduction in an acidic electrolyte comprising cation species, the electrode comprising: a substrate, a metal-based catalyst material, and a cation-augmenting material; wherein the cation-augmenting material comprises an acidic group exchanging protons with the cation species of the acidic electrolyte so as to increase a concentration of the cation species at a surface of the electrode.
Claims20
A method for manufacturing an electrode being the cathode of an electrolytic system, characterized in that the method comprising depositing a metal-based catalyst material and a cation-augmenting material onto a substrate to form a catalyst layer;
- and depositing the cation-augmenting material onto the catalyst layer to form a cation-augmenting layer, wherein the cation-augmenting layer has a thickness between 1.5 μm and 2 μm as determined by scanning electron microscopy and wherein the cation-augmenting material comprises an acidic group exchanging protons with cation species of the acidic catholyte so as to increase a concentration of the cation species at a surface of the electrode.
The method according to 1, characterized in that the step of depositing the metal-based catalyst material and the cation-augmenting material comprises:
- combining the metal-based catalyst material and the cation-augmenting material to form a mixture;
- and
- depositing the mixture onto the substrate to form an active layer.
Dependencies are inferred from the claim text.