Cascade CO2 electroreduction system and related methods for enhanced production of ethylene

US12139803B2 · kind B2 · utility

Assignees

• TOTALENERGIES ONETECH · FR
• The Governing Council of the University of Toronto · CA

Inventors

• Adnan Ozden · Toronto, CA
• Yuhang Wang · Luoyang, CN
• Fengwang LI · Toronto, CA
• David Sinton · Toronto, CA
• Edward Hartley Sargent · Toronto, CA

Key dates

• Filing date: Jan 7, 2022
• Grant date: Nov 12, 2024
• Expiry date: Jan 7, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B15/085
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The disclosure discloses a membrane electrode assembly (MEA) for electrochemically converting carbon monoxide (CO) into ethylene (C2H4) under applied current density, the MEA comprising: a cathode; an anode; an anion-exchange membrane (AEM) to separate the cathode from the anode; an anolyte; a reactant inlet in fluid communication with the cathode to provide a CO-enriched gas component; and a product outlet in fluid communication with the cathode to release a product mixture comprising C2H4; wherein the cathode comprises: a first layer including adsorption sites to adsorb CO as CO* intermediates; a second layer that facilitates stabilization of the CO* intermediates for adsorption onto the adsorption sites of the first layer; and a third layer that facilitates diffusion of CO to the adsorption sites of the first layer.