Sulfur tolerant composite cermet electrodes for solid oxide electrochemical cells
An electrode bonded to a solid, ion conducting electrolyte is described, comprising: (A) particles of an electronic conductor, (B) an ion conducting ceramic metal oxide partially surrounding the particles, and bonded to the electrolyte, and (C) an ionic-electronic conductive coating on the ion conducting ceramic metal oxide and exposed portions of the particles. A tubular electrochemical cell is also described containing an exterior electrode bonded to the exterior of a tubular, solid, oxygen ion conducting electrolyte, where the electrolyte is also in contact with an interior electrode. The exterior electrode comprises particles of an electronic conductor partly embedded in a skeletal structure of a dense, essentially only ionic conductive ceramic metal oxide, where the electrolyte and skeletal structure comprise stabilized zirconia, and where the particles and skeletal structure are contacted by a separate, ionic-electronic conductive coating which consists essentially of an oxide selected from the group consisting of doped ceria, doped urania, and mixtures thereof.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Patent Number(s):
- US 4702971
- OSTI ID:
- 5855339
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of making sulfur tolerant composite cermet electrodes for solid oxide electrochemical cells
Method of making sulfur tolerant composite cermet electrodes for solid oxide electrochemical cells
Related Subjects
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ACTINIDE COMPOUNDS
BINDERS
CERAMICS
CERIUM COMPOUNDS
CERIUM OXIDES
CERMETS
CHALCOGENIDES
CHEMICAL COMPOSITION
COATINGS
COMPOSITE MATERIALS
DOPED MATERIALS
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTRIC CONDUCTORS
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
FABRICATION
IONIC CONDUCTIVITY
MATERIALS
METAL-METAL OXIDE BATTERIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SOLID ELECTROLYTES
URANIUM COMPOUNDS
URANIUM OXIDES