Ceramic membrane which is in an oxide ion conductor based on yttrium-stabilized zirconia

US6475657B1 · kind B1 · utility

Assignee

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR

Inventors

• Pascal Del Gallo · Étampes, FR
• Guylaine Gouriou · Guyancourt, FR

Key dates

• Filing date: Jul 17, 2000
• Grant date: Nov 5, 2002
• Expiry date: Oct 4, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A ceramic membrane having a non-zero volume and including:a) a dense layer, having opposed faces of areas S and S′ and having a non-zero thickness e, of a solid electrolyte;b) two porous electrodes, which are hybrid conductors and have non-zero thicknesses e1 and e′1, which are identical or different, coated on non-zero areas s1 and s′1, which are identical or different, of the two opposed faces of areas S and S′ of the solid electrolyte;c) two porous current collectors, of non-zero thicknesses, e2 and e′2, which are identical or different, coated on non-zero areas s2 and S′2, which are identical or different, of the two porous electrodes; andd) at least one porous covering layer, of non-zero thickness e3, coated on a non-zero area s3, of at least one of the collectors, a thickness E of the membrane is equal to the sum of the thickness of each of the elements a)-d).