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Yttria-doped zirconia as solid electrolyte for fuel-cell applications

Abstract

7.3-10 mol% yttria-doped zirconia (YDZ) was studied with emphasis on its long-term stability as solid electrolyte. The decomposition of common 8.5YDZ (950 C) was detected by analytical TEM. As second issue, the microstructural and chemical properties of nanocrystalline 7.3YDZ thin films were investigated. Metastable t''-YDZ was found to precipitate in nanoscaled regions in YDZ up to 10 mol% yttria. Furthermore, a revised boundary of the c+t phase field, in which YDZ decomposes, is presented. (orig.)
Authors:
Publication Date:
Nov 27, 2009
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-2584
Resource Relation:
Other Information: TH: Diss. (Dr.rer.nat.)
Subject:
30 DIRECT ENERGY CONVERSION; SOLID ELECTROLYTES; FUEL CELLS; STABILITY; DECOMPOSITION; CHEMICAL PROPERTIES; THIN FILMS; YTTRIUM OXIDES; ZIRCONIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; MICROSTRUCTURE; DOPED MATERIALS
OSTI ID:
21508750
Research Organizations:
Karlsruher Institut fuer Technologie (KIT), Karlsruhe (Germany). Fakultaet fuer Physik
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE11GD882
Availability:
Commercial reproduction prohibited; OSTI as DE21508750
Submitting Site:
DE
Size:
140 pages
Announcement Date:
Dec 05, 2011

Citation Formats

Butz, Benjamin. Yttria-doped zirconia as solid electrolyte for fuel-cell applications. Germany: N. p., 2009. Web.
Butz, Benjamin. Yttria-doped zirconia as solid electrolyte for fuel-cell applications. Germany.
Butz, Benjamin. 2009. "Yttria-doped zirconia as solid electrolyte for fuel-cell applications." Germany.
@misc{etde_21508750,
title = {Yttria-doped zirconia as solid electrolyte for fuel-cell applications}
author = {Butz, Benjamin}
abstractNote = {7.3-10 mol% yttria-doped zirconia (YDZ) was studied with emphasis on its long-term stability as solid electrolyte. The decomposition of common 8.5YDZ (950 C) was detected by analytical TEM. As second issue, the microstructural and chemical properties of nanocrystalline 7.3YDZ thin films were investigated. Metastable t''-YDZ was found to precipitate in nanoscaled regions in YDZ up to 10 mol% yttria. Furthermore, a revised boundary of the c+t phase field, in which YDZ decomposes, is presented. (orig.)}
place = {Germany}
year = {2009}
month = {Nov}
}