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Title: Method of preparing a dimensionally stable electrode for use in a MCFC

Abstract

A method is disclosed for preparing a dimensionally stable electrode structure, particularly nickel-chromium anodes, for use in a molten carbonate fuel cell stack. A low-chromium to nickel alloy is provided and oxidized in a mildly oxidizing gas of sufficient oxidation potential to oxidize chromium in the alloy structure. Typically, a steam/H.sub.2 gas mixture in a ratio of about 100/1 and at a temperature below 800.degree. C. is used as the oxidizing medium. This method permits the use of less than 5 weight percent chromium in nickel alloy electrodes while obtaining good resistance to creep in the electrodes of a fuel cell stack.

Inventors:
 [1];  [2]
  1. South Windsor, CT
  2. Stafford Springs, CT
Issue Date:
Research Org.:
INTERNATIONAL FUEL CELLS CORP
OSTI Identifier:
866452
Patent Number(s):
4714586
Application Number:
06/823,718
Assignee:
United States of America as represented by United States (Washington, DC)
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
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
AC01-79ET15440
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; preparing; dimensionally; stable; electrode; mcfc; disclosed; structure; particularly; nickel-chromium; anodes; molten; carbonate; fuel; cell; stack; low-chromium; nickel; alloy; provided; oxidized; mildly; oxidizing; gas; sufficient; oxidation; potential; oxidize; chromium; typically; steam; mixture; ratio; 100; temperature; below; 800; degree; medium; permits; weight; percent; electrodes; obtaining; resistance; creep; method permits; fuel cell; oxidizing gas; temperature below; electrode structure; cell stack; weight percent; carbonate fuel; gas mixture; molten carbonate; dimensionally stable; nickel alloy; stable electrode; alloy electrode; percent chromium; oxidation potential; /419/148/

Citation Formats

Swarr, Thomas E, and Wnuck, Wayne G. Method of preparing a dimensionally stable electrode for use in a MCFC. United States: N. p., 1987. Web.
Swarr, Thomas E, & Wnuck, Wayne G. Method of preparing a dimensionally stable electrode for use in a MCFC. United States.
Swarr, Thomas E, and Wnuck, Wayne G. Tue . "Method of preparing a dimensionally stable electrode for use in a MCFC". United States. https://www.osti.gov/servlets/purl/866452.
@article{osti_866452,
title = {Method of preparing a dimensionally stable electrode for use in a MCFC},
author = {Swarr, Thomas E and Wnuck, Wayne G},
abstractNote = {A method is disclosed for preparing a dimensionally stable electrode structure, particularly nickel-chromium anodes, for use in a molten carbonate fuel cell stack. A low-chromium to nickel alloy is provided and oxidized in a mildly oxidizing gas of sufficient oxidation potential to oxidize chromium in the alloy structure. Typically, a steam/H.sub.2 gas mixture in a ratio of about 100/1 and at a temperature below 800.degree. C. is used as the oxidizing medium. This method permits the use of less than 5 weight percent chromium in nickel alloy electrodes while obtaining good resistance to creep in the electrodes of a fuel cell stack.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {12}
}

Patent:

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