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

Patent · Wed Jan 29 00:00:00 EST 1986

OSTI ID:6665115

Swarr, T E; Wnuck, W G

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.

• Research Organization: United Technologies Research Center, East Hartford, CT (United States)
• DOE Contract Number: AC21-79ET15440
• Assignee: Dept. of Energy
• Application Number: ON: DE87007294
• OSTI ID: 6665115
• Country of Publication: United States
• Language: English

Related Subjects

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