Conductive ceramic composition and method of preparation

Patent · Tue Apr 16 04:00:00 EDT 1991

OSTI ID:7030146

Smith, J L; Kucera, E H

A ceramic anode composition is formed of a multivalent metal oxide or oxygenate such as an alkali metal, transition metal oxygenate. The anode is prepared as a non-stoichiometric crystalline structure by reaction and conditioning in a hydrogen gas cover containing minor proportions of carbon dioxide and water vapor. The structure exhibits a single phase and substantially enhanced electrical conductivity over that of the corresponding stoichiometric structure. Unexpectedly, such oxides and oxygenates are found to be stable in the reducing anode fuel gas of a molten carbonate fuel cell. 4 figures.

• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): A; US 5008163
• Application Number: PPN: US 7-357247
• OSTI ID: 7030146
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ANODES
CERAMICS
CHALCOGENIDES
CHEMICAL COMPOSITION
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
FABRICATION
FUEL CELLS
HIGH-TEMPERATURE FUEL CELLS
MOLTEN CARBONATE FUEL CELLS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS