Grain boundaries and solid electrolyte degradation

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Adv. Ceram.; (United States)

OSTI ID:5908158

De Jonghe, L C; Buechele, A; Yoon, K H

The initiation and propagation of electrochemical degradation in sodium-..beta..-alumina type solid electrolytes have been found to involve grain boundaries. Degradation is preferentially initiated at (00.1) facets of large grains, lowering the critical current density threshold for coarse-grained electrolytes. The critical current densities were determined by monitoring acoustic emissions during current flow. Direct indications of the implication of grain boundaries in degradation has been obtained from transmission and optical microscopy of degraded electrolytes.

• Research Organization: Lawrence Berkeley Lab., CA
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5908158
• Journal Information: Adv. Ceram.; (United States), Journal Name: Adv. Ceram.; (United States) Vol. 7; ISSN ADCED
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
CRYSTALS
DECOMPOSITION
ELECTROLYTES
ELEMENTS
GRAIN BOUNDARIES
METALS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
POLYCRYSTALS
SODIUM
SOLID ELECTROLYTES