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

Subject Categories:

  • Electrochemical Energy Storage
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE