Electrochemical cell and its use for the separation and the electrochemical extraction of oxygen
US5582710A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 16, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | May 16, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2210/0082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an electrochemical cell comprising a solid electrolyte conductive for O.sup.2- anions in contact with an anode and a cathode of identical or different composition, the electrolyte solid being comprised of a composition derived from Bi.sub.4 V.sub.2 O.sub.11 of which at least one of the cationic constituent elements is substituted by at least one substituting element chosen such that the gamma phase structural type of Bi.sub.4 V.sub.2 O.sub.11 is maintained, as well as the equilibrium of charges, at least one of the anode or the cathode including two parts, a first part being of a mixed electronic and ionic conductive material in contact with the solid electrolyte, the second part being an electronic conductive material superposed on the first part. The invention equally relates to the use of the electrochemical cell with a view towards the separation or the extraction of oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.