Patent · US Active

System and method for adjusting carbon dioxide concentration in indoor atmospheres

US11207640B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Palo Alto Research Center Incorporated · US

Inventors

Divyaraj Desai · San Jose, US
Jessica Louis Baker Rivest · Palo Alto, US
Gabriel Iftime · Mississauga, CA
Vedhasri Vedharathinam · Sunnyvale, US
Mahati Chintapalli · Minnetonka, US
Junhua Wei · Mountain View, US
Sean E. Doris · San Francisco, US

Key dates

Filing date	Jan 26, 2018
Grant date	Dec 28, 2021
Priority date	—
Expiry date	Jan 26, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An electrochemical device suited to modifying a carbon dioxide concentration in an interior space includes a cathode chamber with an inlet which receives a feed gas containing carbon dioxide. A reduction catalyst layer in the cathode chamber reduces carbon dioxide in the gas to form an ionic carrier species. An anode chamber with an outlet outputs a gas comprising carbon dioxide. A solid electrolyte membrane spaces the anode chamber from the cathode chamber and transports the ionic carrier species between the cathode chamber and the anode chamber. The membrane includes an ionic liquid. An oxidation catalyst layer in the anode chamber oxidizes the ionic carrier species to form carbon dioxide. A voltage source provides a voltage difference across the membrane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.