Method of bonding a conductive layer on an electrode of an electrochemical cell
- Richland Township, Allegheny County, PA
- Pittsburgh, PA
A dense, electronically conductive interconnection layer 26 is bonded onto a porous, tubular, electronically conductive air electrode structure 16, optionally supported by a ceramic support 22, by (A) providing an air electrode surface, (B) forming on a selected portion of the electrode surface 24, 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.degree. C. to 1,550.degree. C., without the application of pressure, to provide a dense, sintered, interconnection material 26 bonded to the air electrode 16, where calcium and chromium from the surface deposit are incorporated into the structure of the LaCrO.sub.3. A solid electrolyte layer 18 can be applied to the uncovered portion of the air electrode, and a fuel electrode 20 can be applied to the solid electrolyte, to provide an electrochemical cell 10.
- Research Organization:
- Westinghouse Electric Corp
- DOE Contract Number:
- AC02-80ET17089
- Assignee:
- Westinghouse Electric Corp. (Pittsburgh, PA)
- Patent Number(s):
- US 4861345
- OSTI ID:
- 867089
- Country of Publication:
- United States
- Language:
- English
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22
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air electrode
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atmosphere
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calcium oxide
cell
ceramic
ceramic support
chromium
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comprising
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conductive layer
consisting
degree
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doped
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lacro
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mg
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sr
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