ELECTROLYSIS OF CARBON DIOXIDE TO SOLID CARBON USING A LIQUID METAL CATHODE
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United States of America Patent
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Issued Date -
Feb 8, 2024
app pub date -
Nov 26, 2021
filing date -
Dec 9, 2020
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Abstract
A process for producing solid carbon and gaseous oxygen from CO2 via electrolysis using an electrolysis apparatus is disclosed. The apparatus includes a chamber with an electrolyte inlet, an electrolyte outlet, a liquid electrolyte containing CO2 in the chamber, at least one cathode-anode pair, with the cathode including a liquid metal capable of catalysing reduction of CO2 to solid carbon at a selected operating temperature of the process. The process includes causing the electrolyte to flow from the inlet to the outlet in fluid communication with the cathode-anode pair, applying a voltage between the cathode-anode pair and causing solid carbon to form on the cathode from CO2 in the electrolyte and gaseous oxygen to be evolved at the anode from CO2 in the electrolyte.
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