Accession Number:
AD0702938
Title:
IONIC CONDUCTION IN BETA-ALUMINA.
Descriptive Note:
Interim technical rept. no. 6, 8 Feb-8Aug 69,
Corporate Author:
CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE
Personal Author(s):
Report Date:
1969-12-01
Pagination or Media Count:
31.0
Abstract:
The investigation was undertaken to determine ionic transport characteristics in beta-alumina and between beta-alumina and adjacent phases. Polycrystalline beta-alumina disks were used for emf measurements of sodium activity in sodium amalgams of concentration 0.52 to 4.0 atom percent at 30C. No detectable electronic conduction of beta-alumina was observed. The current behavior, upon imposing a constant voltage source across the beta-alumina, was measured and found to decrease with the square root of time. The formation of metallic, sodium bridges or dendrites were observed to form across polycrystalline, beta-alumina disks. This could lead to degradation of beta-alumina when used as an electrolyte or separator in electrochemical cells. Author
Descriptors:
Subject Categories:
- Electrochemical Energy Storage
- Electricity and Magnetism