Method of bonding a conductive layer on an electrode of an electrochemical cell
A dense, electronically conductive interconnection layer is bonded onto a porous, tubular, electronically conductive air electrode structure, optionally supported by a ceramic support, by (A) providing an air electrode surface, (B) forming on a selected portion of the electrode surface, without the use of pressure, particles of LaCrO[sub 3] doped with an element selected from the group consisting of Sr, Mg, Ca, Ba, Co, and mixtures thereof, where the particles have a deposit on their surface comprising calcium oxide and chromium oxide; (C) heating the particles with the oxide surface deposit in an oxidizing atmosphere at from 1,300 C to 1,550 C, without the application of pressure, to provide a dense, sintered, interconnection material bonded to the air electrode, where calcium and chromium from the surface deposit are incorporated into the structure of the LaCrO[sub 3]. A solid electrolyte layer can be applied to the uncovered portion of the air electrode, and a fuel electrode can be applied to the solid electrolyte, to provide an electrochemical cell. 4 figs.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- DOE Contract Number:
- AC02-80ET17089
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 4861345; A
- Application Number:
- PPN: US 7-194065
- OSTI ID:
- 7074419
- Resource Relation:
- Patent File Date: 13 May 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC CONDUCTORS
BONDING
ELECTRODES
SOLID ELECTROLYTE FUEL CELLS
BARIUM
CALCIUM
CHROMATES
COBALT
DOPED MATERIALS
IMPREGNATION
LANTHANUM COMPOUNDS
MAGNESIUM
SINTERING
STRONTIUM
ALKALINE EARTH METALS
CHROMIUM COMPOUNDS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELEMENTS
FABRICATION
FUEL CELLS
JOINING
MATERIALS
METALS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
300503* - Fuel Cells- Materials
Components
& Auxiliaries