Modified cermet fuel electrodes for solid oxide electrochemical cells

Patent · Tue Jun 04 04:00:00 EDT 1991

OSTI ID:5556460

Ruka, R J; Spengler, C J

This patent describes a composite of an exterior porous electrode bonded to a solid oxygen ion conducting electrolyte, where the electrolyte is also in contact with an interior electrode, the exterior electrode comprising coarse metal particles selected from the group consisting of nickel particles, cobalt particles, and mixtures thereof, having diameters from 3 micrometers to 35 micrometers, the improvement characterized in that the particles of the exterior electrode are coated with a separate electronically conductive, porous, multiphase layer. It comprises fine metal particles selected from the group consisting of discrete nickel particles, discrete cobalt particles, and mixtures thereof, having diameters from 0.05 micrometer to 1.75 micrometer, and conductive oxide, selected from the group consisting of cerium oxide, doped cerium oxide, strontium titanate, doped strontium titanate and mixtures thereof.

• Assignee: Westinghouse Electric Co., Pittsburgh, PA (USA)
• Patent Number(s): A; US 5021304
• Application Number: PPN: US 7-327478
• OSTI ID: 5556460
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CERIUM COMPOUNDS
CERIUM OXIDES
CERMETS
CHALCOGENIDES
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
DIRECT ENERGY CONVERTERS
DOPED MATERIALS
ELECTROCHEMICAL CELLS
ELECTRODES
FUEL CELLS
MATERIALS
MATERIALS TESTING
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
TESTING
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS