Fabrication of solid oxide fuel cell by electrochemical vapor deposition

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:866965

Brian, Riley ^[1]; Szreders, Bernard E ^[2]

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1. Willimantic, CT
2. Oakdale, CT

In a high temperature solid oxide fuel cell (SOFC), the deposition of an impervious high density thin layer of electrically conductive interconnector material, such as magnesium doped lanthanum chromite, and of an electrolyte material, such as yttria stabilized zirconia, onto a porous support/air electrode substrate surface is carried out at high temperatures (approximately 1100.degree.-1300.degree. C.) by a process of electrochemical vapor deposition. In this process, the mixed chlorides of the specific metals involved react in the gaseous state with water vapor resulting in the deposit of an impervious thin oxide layer on the support tube/air electrode substrate of between 20-50 microns in thickness. An internal heater, such as a heat pipe, is placed within the support tube/air electrode substrate and induces a uniform temperature profile therein so as to afford precise and uniform oxide deposition kinetics in an arrangement which is particularly adapted for large scale, commercial fabrication of SOFCs.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4831965
• OSTI ID: 866965
• Country of Publication: United States
• Language: English

Related Subjects

fabrication
solid
oxide
fuel
cell
electrochemical
vapor
deposition
temperature
sofc
impervious
density
layer
electrically
conductive
interconnector
material
magnesium
doped
lanthanum
chromite
electrolyte
yttria
stabilized
zirconia
porous
support
air
electrode
substrate
surface
carried
temperatures
approximately
1100
degree
-1300
process
mixed
chlorides
specific
metals
involved
react
gaseous
water
resulting
deposit
tube
20-50
microns
thickness
internal
heater
heat
pipe
placed
induces
uniform
profile
therein
afford
precise
kinetics
arrangement
particularly
adapted
scale
commercial
sofcs
yttria stabilized
electrode substrate
fuel cell
support tube
temperature profile
particularly adapted
temperature solid
air electrode
water vapor
chemical vapor
heat pipe
electrically conductive
oxide fuel
solid oxide
vapor deposition
substrate surface
oxide layer
porous support
stabilized zirconia
doped lanthanum
lanthanum chromite
electrolyte material
uniform temperature
vapor resulting
electrochemical vapor
internal heat
oxide deposition
specific metal
conductive interconnect
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