Electrolytic degradation of lithia-stabilized. beta. ''-alumina. Technical progress report, April 1, 1979-June 30, 1980

Technical Report · Tue Jul 01 04:00:00 EDT 1980

OSTI ID:5351091

Virkar, A V

Research activities during the period April 1, 1979 to June 30, 1980 are described in the following areas: theoretical development of the model-solution to the Laplace equation for determining the flux of sodium ions to the sodium-filled cracks; determination of crack propagation rates via low-temperature degradation of bar specimens; design and construction of apparatus for wetting studies on ..beta..''-alumina and NASICON; calculation of current concentration near nonwetted areas by the method of Papamichael and Whiteman; testing of effects of bakeout and additives on sodium-sodium cells and design of disc cells; fabrication and testing of NASICON solid electrolyte. Important findings during the present year are as follows: high-temperature bakeout is essential to ensure complete wetting - improved wetting significantly improves performance of cells; ion focusing to a sodium-filled crack is determined by solution of the Laplace equation for appropriate boundary conditions; crack propagation rates are determined by strength measurements after electrolysis; current concentration near nonwetted areas is calculated by the conformal transformation technique of Papamichael and Whiteman. 14 figures, 1 table.

• Research Organization: Utah Univ., Salt Lake City (USA). Dept. of Materials Science and Engineering
• DOE Contract Number: AS02-77ER04451
• OSTI ID: 5351091
• Report Number(s): COO-4451-3; UTEC-80-100
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ATOMIC IONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
CRACKS
CURRENT DENSITY
DATA
DECOMPOSITION
DIFFERENTIAL EQUATIONS
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTROLYTES
ELECTROMOTIVE FORCE
ENERGY STORAGE SYSTEMS
EQUATIONS
EXPERIMENTAL DATA
FABRICATION
INFORMATION
IONS
LAPLACE EQUATION
LITHIUM COMPOUNDS
LITHIUM OXIDES
MATHEMATICAL MODELS
METAL-NONMETAL BATTERIES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM IONS
SODIUM OXIDES
SODIUM-SULFUR BATTERIES
SOLID ELECTROLYTES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES