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Title: Conductive ceramic composition and method of preparation

Abstract

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.

Inventors:
;
Publication Date:
OSTI Identifier:
7030146
Patent Number(s):
US 5008163; A
Application Number:
PPN: US 7-357247
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-108777
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 26 May 1989
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ANODES; FABRICATION; MOLTEN CARBONATE FUEL CELLS; ALKALI METAL COMPOUNDS; CERAMICS; CHEMICAL COMPOSITION; ELECTRIC CONDUCTIVITY; OXIDES; TRANSITION ELEMENT COMPOUNDS; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; ELECTRODES; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Smith, J.L., and Kucera, E.H.. Conductive ceramic composition and method of preparation. United States: N. p., 1991. Web.
Smith, J.L., & Kucera, E.H.. Conductive ceramic composition and method of preparation. United States.
Smith, J.L., and Kucera, E.H.. Tue . "Conductive ceramic composition and method of preparation". United States.
@article{osti_7030146,
title = {Conductive ceramic composition and method of preparation},
author = {Smith, J.L. and Kucera, E.H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 16 00:00:00 EDT 1991},
month = {Tue Apr 16 00:00:00 EDT 1991}
}