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Title: Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell

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/sup 0/C is used as the oxidizing medium. This method permits the use of less than 5 wt % chromium in nickel alloy electrodes while obtaining good resistance to creep in the electrodes of a fuel cell stack.

Inventors:
;
Issue Date:
Research Org.:
United Technologies Research Center, East Hartford, CT (United States)
OSTI Identifier:
6665115
Application Number:
ON: DE87007294
Assignee:
Dept. of Energy
DOE Contract Number:  
AC21-79ET15440
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ELECTRODES; PRODUCTION; MOLTEN CARBONATE FUEL CELLS; NICKEL-CHROMIUM STEELS; OXIDATION; STABILITY; ALLOYS; CHEMICAL REACTIONS; CHROMIUM ALLOYS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; IRON ALLOYS; IRON BASE ALLOYS; NICKEL ALLOYS; NICKEL STEELS; STEELS; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Swarr, T E, and Wnuck, W G. Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell. United States: N. p., 1986. Web.
Swarr, T E, & Wnuck, W G. Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell. United States.
Swarr, T E, and Wnuck, W G. Wed . "Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell". United States.
@article{osti_6665115,
title = {Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell},
author = {Swarr, T E and Wnuck, W 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/sup 0/C is used as the oxidizing medium. This method permits the use of less than 5 wt % 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 = {1986},
month = {1}
}