Electrochemical method, apparatus and system with improved production efficiency and CO2 sequestration
US12404595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2021 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Mar 29, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention describes ways of increasing the production efficiency of a saline water electrolysis cell and of consuming CO2 gas and sequestering it from the atmosphere. This is achieved by the introduction of CO2 gas into the catholyte of the electrolysis, where reaction of the CO2 with the hydroxide ions present in the catholyte reduces the pH of the catholyte, thereby increasing production efficiency of the electrolysis cell. The preceding reaction forms bicarbonate and/or carbonate, thus sequestering the reactant CO2 gas from the atmosphere. The CO2 gas may be introduced either directly into the cathode area of the electrolysis cell, or into the electrolyte prior to its introduction into the electrolysis cell. Corresponding apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.