Conductive ceramic composition and method of preparation

Patent · Tue Jan 01 00:00:00 EST 1991

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 (United States)
• 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

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