Conductive ceramic composition and method of preparation

Patent · Mon Dec 31 23:00:00 EST 1990

OSTI ID:867779

Smith, James L ^[1]; Kucera, Eugenia H ^[2]

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1. Lemont, IL
2. Downers Grove, IL

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5008163
• OSTI ID: 867779
• Country of Publication: United States
• Language: English

Related Subjects

/429/252/423/501/502/
alkali
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anode
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carbon
carbon dioxide
carbonate
carbonate fuel
cell
ceramic
ceramic composition
composition
conditioning
conductive
conductive ceramic
conductivity
containing
corresponding
cover
crystalline
crystalline structure
dioxide
electrical
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enhanced
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exhibits
formed
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fuel
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fuel gas
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hydrogen
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line structure
metal
metal oxide
metal oxygen
metal oxygenate
method
minor
minor proportion
minor proportions
molten
molten carbonate
multivalent
multivalent metal
non-stoichiometric
oxide
oxides
oxygenate
oxygenates
phase
preparation
prepared
proportions
reaction
reducing
single
single phase
stable
stoichiometric
structure
structure exhibits
substantially
substantially enhanced
transition
transition metal
unexpectedly
vapor
water
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