Formation of thin walled ceramic solid oxide fuel cells

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867191

Claar, Terry D ^[1]; Busch, Donald E ^[2]; Picciolo, John J ^[3]

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1. Tisle, IL
2. Hinsdale, IL
3. Lockport, IL

To reduce thermal stress and improve bonding in a high temperature monolithic solid oxide fuel cell (SOFC), intermediate layers are provided between the SOFC's electrodes and electrolyte which are of different compositions. The intermediate layers are comprised of a blend of some of the materials used in the electrode and electrolyte compositions. Particle size is controlled to reduce problems involving differential shrinkage rates of the various layers when the entire structure is fired at a single temperature, while pore formers are provided in the electrolyte layers to be removed during firing for the formation of desired pores in the electrode layers. Each layer includes a binder in the form of a thermosetting acrylic which during initial processing is cured to provide a self-supporting structure with the ceramic components in the green state. A self-supporting corrugated structure is thus formed prior to firing, which the organic components of the binder and plasticizer removed during firing to provide a high strength, high temperature resistant ceramic structure of low weight and density.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: Arch Development Corporation (Chicago, IL)
• Patent Number(s): US 4883497
• OSTI ID: 867191
• Country of Publication: United States
• Language: English

Related Subjects

formation
walled
ceramic
solid
oxide
fuel
cells
reduce
thermal
stress
improve
bonding
temperature
monolithic
cell
sofc
intermediate
layers
provided
electrodes
electrolyte
compositions
comprised
blend
materials
electrode
particle
size
controlled
involving
differential
shrinkage
rates
various
entire
structure
fired
single
pore
formers
removed
firing
desired
pores
layer
binder
form
thermosetting
acrylic
initial
processing
cured
provide
self-supporting
components
green
corrugated
formed
prior
organic
plasticizer
strength
resistant
weight
density
organic components
intermediate layers
fuel cell
electrolyte composition
electrolyte layer
ceramic components
ceramic component
thermal stress
fuel cells
oxide fuel
solid oxide
particle size
intermediate layer
resistant ceramic
supporting structure
various layers
reduce thermal
monolithic solid
organic component
formed prior
ceramic structure
electrolyte compositions
entire structure
electrode layers
electrode layer
improve bonding
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