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Title: Compositionally graded metallic plates for planar solid oxide fuel cells

Abstract

A method for preparing compositionally graded metallic plates and compositionally graded metallic plates suitable for use as interconnects for solid oxide fuel cells are provided. The method of the invention, utilizing powder metallurgy, enables making metallic plates of generally any desired composition to meet the corrosion requirements of fuel cells and other applications, and enables making metallic plates of graded composition from one surface of the plate to the other. A powder of the desired alloy composition is obtained, then solvents, dispersants, a plasticizer and an organic binder are added to form a slip. The slip is then formed into a layer on a desired substrate that can be flat or textured. Once dried, the layer is removed from the substrate and the binder is burned out. The layer is sintered in a reducing atmosphere at a set temperature for a predefined duration specific to the materials used and the desired final properties.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531492
Patent Number(s):
6843960
Application Number:
10/167,832
Assignee:
The University of Chicago (Chicago, IL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2002-06-12
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE

Citation Formats

Krumpelt, Michael, Cruse, Terry Alan, Carter, John David, Routbort, Jules L., and Kumar, Romesh. Compositionally graded metallic plates for planar solid oxide fuel cells. United States: N. p., 2005. Web.
Krumpelt, Michael, Cruse, Terry Alan, Carter, John David, Routbort, Jules L., & Kumar, Romesh. Compositionally graded metallic plates for planar solid oxide fuel cells. United States.
Krumpelt, Michael, Cruse, Terry Alan, Carter, John David, Routbort, Jules L., and Kumar, Romesh. Tue . "Compositionally graded metallic plates for planar solid oxide fuel cells". United States. https://www.osti.gov/servlets/purl/1531492.
@article{osti_1531492,
title = {Compositionally graded metallic plates for planar solid oxide fuel cells},
author = {Krumpelt, Michael and Cruse, Terry Alan and Carter, John David and Routbort, Jules L. and Kumar, Romesh},
abstractNote = {A method for preparing compositionally graded metallic plates and compositionally graded metallic plates suitable for use as interconnects for solid oxide fuel cells are provided. The method of the invention, utilizing powder metallurgy, enables making metallic plates of generally any desired composition to meet the corrosion requirements of fuel cells and other applications, and enables making metallic plates of graded composition from one surface of the plate to the other. A powder of the desired alloy composition is obtained, then solvents, dispersants, a plasticizer and an organic binder are added to form a slip. The slip is then formed into a layer on a desired substrate that can be flat or textured. Once dried, the layer is removed from the substrate and the binder is burned out. The layer is sintered in a reducing atmosphere at a set temperature for a predefined duration specific to the materials used and the desired final properties.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}

Works referenced in this record:

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patent, August 1999


Electrical interconnect for a planar fuel cell
patent, August 2001


Method for varying the density of plated foam
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Production of flat products from particulate material
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Process for making a thin film using a metal paste
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Electroconductive interconnecting member and fuel cell having the member
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Doped lanthanum chromite material for bipolar interconnects for solid oxide fuel cells
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patent, February 1993


Method of fabricating a monolithic solid oxide fuel cell
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patent, September 1992


Fluxed lanthanum chromite for low temperature air firing
patent, March 1994


Solid oxide fuel cell interconnector
patent, April 2000


Metallic bipolar plate for high-temperature fuel cells and method of making same
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Solid oxide fuel cell interconnector
patent, December 2001


Porous articles and method for the manufacture thereof
patent, July 2003


Sintering aid for lanthanum chromite refractories
patent, June 1988


Electrical energy devices
patent, September 2002


Method of manufacturing electrodes of molten carbonate fuel cell
patent, May 1992


Interconnect for solid oxide fuel cells
patent, July 2001


    Works referencing / citing this record:

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    Method of sealing a bipolar plate supported solid oxide fuel cell with a sealed anode compartment
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    Slurry-based manufacture of thin wall metal components
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    Solid oxide fuel cell
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    Method for shrinkage and porosity control during sintering of multilayer structures
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