Properties of partially stabilized zirconia fuel cell

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Journal of the Electrochemical Society; (USA)

DOI:https://doi.org/10.1149/1.2097505· OSTI ID:7037275

Yoshida, T; Hoshima, T; Mkaizawa, I; Sakurada, S ^[1]

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1. TONEN Corp., Corporate Research and Development Lab., 3-1 Nishi-Tsurugaoka 1-chome, Ohi-Machi, Iruma-Gun, Saitamo-ken (JP)

Much attention has been focused on the solid oxide fuel cell (SOFC). The tubular configuration is being developed by Westinghouse Corporation and pilot plant facilities are operated in the 1 to 5kW range. The other SOFC configurations have now been proposed: monolithic SOFC and planar configuration SOFC. Fully stabilized zirconia (FSZ) was applied to SOFC as electrolytes, since FSZ offers a superior oxygen conductivity. However, yttria doped zirconia has three different modifications: monoclinic, tetragonal, and cubic phases. In FSZ, a high yttria doping retains the normal high-temperature cubic over a wide range of temperature. Partially stabilized zirconia (PSZ), with a lower concentration of yttria dopant, consists mainly of the tetragonal phase and possesses a high strength and a high toughness despite the fact that FSZ is brittle. The mechanical properties of PSZ seem to be derived from the stress-induced tetragonal to monoclinic transition, which may provide an ambiguity on long term stability at high temperature. Advances in ceramics technology allow the fabrication of thin PSZ sheets below the thickness of 0.25 mm. The thin PSZ sheets could provide a new assembly of SOFC through PSZ sheets conductivity is one order lower than that of 1000{degrees}C. Thus, a thin PSZ sheet is a good candidate for a SOFC electrolyte. In this paper, the properties of SOFC using PSZ as an electrolyte are presented.

• OSTI ID: 7037275
• Journal Information: Journal of the Electrochemical Society; (USA), Vol. 136:9; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
FUEL CELLS
DESIGN
ZIRCONIUM OXIDES
STABILIZATION
CRYSTAL DOPING
HIGH TEMPERATURE
IONIC CONDUCTIVITY
MATERIALS TESTING
MIXED OXIDE FUELS
OXYGEN
PHASE TRANSFORMATIONS
SOLID ELECTROLYTES
SOLID FUELS
YTTRIUM ADDITIONS
ALLOYS
CHALCOGENIDES
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
ELEMENTS
FUELS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM ALLOYS
ZIRCONIUM COMPOUNDS
300101* - MHD Generators- Design & Development
300103 - MHD Generators- Materials
Components
& Auxiliaries
360204 - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies