Process for producing a solid electrolyte layer on a substrate, in a fuel cell, and in a sensor
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United States of America Patent
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Aug 8, 2006
Grant Date -
Aug 7, 2003
app pub date -
Feb 24, 2003
filing date -
Aug 24, 2000
priority date (Note) -
Expired
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Abstract
A method for producing a solid electrolyte layer, of a fully stabilized zirconium oxide layer on a substrate includes adding a sintering additive to a ZrO2-starting material, a liquid phase is formed during a sintering process and liquid phase sintering is possible at a reduced temperature in comparison with the required sintering temperature without the sintering additive. The reduced sintering temperature substantially prevents the formation of a foreign phase layer between the substrate and the gas-tight layer applied thereon, being of fully stabilized ZrO2. The method is particularly suitable for producing a solid electrolyte layer on a cathode of a high temperature fuel cell and in a sensor.
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