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Title: Method of forming a plasma sprayed interconnection layer on an electrode of an electrochemical cell

Abstract

A dense, substantially gas-tight, electrically conductive interconnection layer is formed on an air electrode structure of an electrochemical cell by (A) providing an electrode surface; (B) forming on a selected portion of the electrode surface, a layer of doped LaCrO{sub 3} particles doped with an element selected from Ca, Sr, Ba, Mg, Co, Ni, Al and mixtures thereof by plasma spraying doped LaCrO{sub 3} powder, preferably compensated with chromium as Cr{sub 2}O{sub 3} and/or dopant element, preferably by plasma arc spraying; and, (C) heating the doped and compensated LaCrO{sub 3} layer to about 1100 C to 1300 C to provide a dense, substantially gas-tight, substantially hydration-free, electrically conductive interconnection material bonded to the electrode surface. A solid electrolyte layer can be applied to the unselected portion of the air electrode, and a fuel electrode can be applied to the solid electrolyte, to provide an electrochemical cell. 6 figs.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Westinghouse Electric Corporation
OSTI Identifier:
87717
Patent Number(s):
5,426,003
Application Number:
PAN: 8-195,774
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
DOE Contract Number:  
FC21-91MC28055
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Jun 1995
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; FUEL CELLS; ELECTRODES; SPRAYED COATINGS; LANTHANUM OXIDES; PLASMA ARC SPRAYING; HEAT TREATMENTS; CHROMIUM OXIDES; DOPED MATERIALS; ELECTRIC CONTACTS

Citation Formats

Spengler, C J, Folser, G R, Vora, S D, Kuo, L, and Richards, V L. Method of forming a plasma sprayed interconnection layer on an electrode of an electrochemical cell. United States: N. p., 1995. Web.
Spengler, C J, Folser, G R, Vora, S D, Kuo, L, & Richards, V L. Method of forming a plasma sprayed interconnection layer on an electrode of an electrochemical cell. United States.
Spengler, C J, Folser, G R, Vora, S D, Kuo, L, and Richards, V L. Tue . "Method of forming a plasma sprayed interconnection layer on an electrode of an electrochemical cell". United States.
@article{osti_87717,
title = {Method of forming a plasma sprayed interconnection layer on an electrode of an electrochemical cell},
author = {Spengler, C J and Folser, G R and Vora, S D and Kuo, L and Richards, V L},
abstractNote = {A dense, substantially gas-tight, electrically conductive interconnection layer is formed on an air electrode structure of an electrochemical cell by (A) providing an electrode surface; (B) forming on a selected portion of the electrode surface, a layer of doped LaCrO{sub 3} particles doped with an element selected from Ca, Sr, Ba, Mg, Co, Ni, Al and mixtures thereof by plasma spraying doped LaCrO{sub 3} powder, preferably compensated with chromium as Cr{sub 2}O{sub 3} and/or dopant element, preferably by plasma arc spraying; and, (C) heating the doped and compensated LaCrO{sub 3} layer to about 1100 C to 1300 C to provide a dense, substantially gas-tight, substantially hydration-free, electrically conductive interconnection material bonded to the electrode surface. A solid electrolyte layer can be applied to the unselected portion of the air electrode, and a fuel electrode can be applied to the solid electrolyte, to provide an electrochemical cell. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {6}
}