Electrolysis of carbon dioxide to solid carbon using a liquid metal cathode
US12421612B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2021 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Nov 26, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B1/245
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.