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1. WO1997026684 - SINGLE-CRYSTAL OXYGEN ION CONDUCTOR

Publication Number WO/1997/026684
Publication Date 24.07.1997
International Application No. PCT/US1997/000977
International Filing Date 17.01.1997
Chapter 2 Demand Filed 14.08.1997
IPC
B01D 53/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
32by electrical effects other than those provided for in group B01D61/89
C25B 1/02 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
02of hydrogen or oxygen
C25B 9/18 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
9Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies
18Assemblies comprising a plurality of cells
C30B 11/00 2006.01
CCHEMISTRY; METALLURGY
30CRYSTAL GROWTH
BSINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
11Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
G01N 27/407 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
H01M 8/12 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
10Fuel cells with solid electrolytes
12operating at high temperature, e.g. with stabilised ZrO2 electrolyte
CPC
B01D 53/326
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
32by electrical effects other than those provided for in group B01D61/00
326in electrochemical cells
C25B 1/02
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
01Products
02Hydrogen or oxygen
C25B 9/70
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
9Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
70Assemblies comprising two or more cells
C30B 11/00
CCHEMISTRY; METALLURGY
30CRYSTAL GROWTH
BSINGLE-CRYSTAL-GROWTH
11Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
C30B 29/16
CCHEMISTRY; METALLURGY
30CRYSTAL GROWTH
BSINGLE-CRYSTAL-GROWTH
29Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
10Inorganic compounds or compositions
16Oxides
G01N 27/4073
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
4073Composition or fabrication of the solid electrolyte
Applicants
  • THE ARIZONA BOARD OF REGENTS on behalf of THE UNIVERSITY OF ARIZONA [US]/[US] (AllExceptUS)
  • CROW, Steven, Collins [US]/[US] (UsOnly)
Inventors
  • CROW, Steven, Collins
Agents
  • DURANDO, Antonio, R.
Priority Data
60/010,19218.01.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SINGLE-CRYSTAL OXYGEN ION CONDUCTOR
(FR) CONDUCTEUR D'IONS D'OXYGENE MONOCRISTALLIN
Abstract
(EN)
A single-crystal solid oxide material, rather than a polycrystalline ceramic, is used for electrolytic and fuel cell applications. For the electrolytic production of oxygen from carbon dioxide, a yttria-stabilized zirconia crystal (12) is coated with platinum electrodes and encased in a platinum structure, to provide a thermally stable electrolytic cell. A multilayered device (50) is constructed by stacking crystals (12) and spacers (56, 58, 60) in an alternating arrangement and by plumbing the active surfaces of the crystals in parallel through perforations drilled directly into the crystals, so that manifolding and sealing problems are minimized.
(FR)
L'invention concerne un matériau d'oxyde solide monocristallin utilisé à la place d'une céramique polycristalline pour des applications électrolytiques et de cellules de combustible. Pour la production électrolytique d'oxygène à partir de dioxyde de carbone, un cristal de zircone (12) stabilisé à l'yttria est recouvert d'électrodes de platine et emboîté dans une structure de platine, pour constituer une cellule électrolytique thermiquement stable. Un dispositif (50) à plusieurs couches est construit en empilant en alternance des cristaux (12) et des éléments d'espacement (56, 58, 60) et en fixant les surfaces actives des cristaux en parallèle, à travers les perforations percées directement dans les cristaux, ce qui permet de réduire à un minimum les problèmes de distribution et d'étanchéité.
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