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

Patent · Sun Jan 01 00:00:00 EST 1995

OSTI ID:869936

Spengler, Charles J ^[1]; Folser, George R ^[2]; Vora, Shailesh D ^[3]; Kuo, Lewis ^[3]; Richards, Von L ^[4]

---

1. Murrysville, PA
2. Lower Burrell, PA
3. Monroeville, PA
4. Anyola, IN

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.degree. C. to 1300.degree. 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.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: FC21-91MC28055
• Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
• Patent Number(s): US 5426003
• OSTI ID: 869936
• Country of Publication: United States
• Language: English

Related Subjects

method
forming
plasma
sprayed
interconnection
layer
electrode
electrochemical
cell
dense
substantially
gas-tight
electrically
conductive
formed
air
structure
providing
surface
selected
portion
doped
lacro
particles
element
sr
mg
mixtures
spraying
powder
preferably
compensated
chromium
dopant
heating
1100
degree
1300
provide
hydration-free
material
bonded
solid
electrolyte
applied
unselected
fuel
substantially gas-tight
material bonded
interconnection layer
electrolyte layer
plasma spray
electrode structure
air electrode
electrochemical cell
electrically conductive
solid electrolyte
plasma spraying
element selected
fuel electrode
electrode surface
interconnection material
conductive interconnection
selected portion
plasma sprayed
doped lacro
sprayed interconnection
dopant element
conductive interconnect
/429/29/427/