Degradation of sodium beta-double-prime alumina: effect of microstructure

Journal Article · Sun May 01 04:00:00 EDT 1983 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2119881· OSTI ID:6516941

Buechele, A C; De Jonghe, L C; Hitchcock, D

Degradation of the electrolytes may occur when sodium-beta or beta-double-prime alumina solid electrolytes are subjected to ionic charge transfer in sodium/sodium or in sodium/sulfur cells. The present investigation is concerned with the effect of the microstructure on this degradation. An acoustic emission technique is used for the detection of the initiation of crack propagation. When electrolytes fail by initiation and propagation of cracks, stress waves are generated as a result of the sudden stored energy release. These stress waves or acoustic emissions can be monitored by an ultrasonic transducer. The reported experiments can be considered suitable for comparison of the effects of microstructure, and for the evaluation of the adequacy of models proposed for the initiation current density threshold of Mode I degradation.

• Research Organization: California Univ., Berkeley
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6516941
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 130; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ACOUSTIC EMISSION TESTING
ACOUSTIC TESTING
CHARGE EXCHANGE
CRACK PROPAGATION
CRYSTAL STRUCTURE
CURRENT DENSITY
ELECTROLYTES
MATERIALS TESTING
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
SOLID ELECTROLYTES
TESTING