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Title: Formation of thin walled ceramic solid oxide fuel cells

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. (Tisle, IL)
  2. (Hinsdale, IL)
  3. (Lockport, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
867191
Patent Number(s):
US 4883497
Assignee:
Arch Development Corporation (Chicago, IL) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /29/429/

Citation Formats

Claar, Terry D., Busch, Donald E., and Picciolo, John J. Formation of thin walled ceramic solid oxide fuel cells. United States: N. p., 1989. Web.
Claar, Terry D., Busch, Donald E., & Picciolo, John J. Formation of thin walled ceramic solid oxide fuel cells. United States.
Claar, Terry D., Busch, Donald E., and Picciolo, John J. Sun . "Formation of thin walled ceramic solid oxide fuel cells". United States. https://www.osti.gov/servlets/purl/867191.
@article{osti_867191,
title = {Formation of thin walled ceramic solid oxide fuel cells},
author = {Claar, Terry D. and Busch, Donald E. and Picciolo, John J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

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