The effect of geometric factors on sodium conduction: A comparison of beta- And beta"-alumina

Emma Kennedy, Dunbar P. Birnie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

β"-alumina has been shown to have superior sodium conduction compared with β-alumina, and therefore is used as the electrolyte material in sodium battery systems. The β"-alumina structure is composed of layers of (111) oriented spinel-structure units separated by conduction planes that are comparably more open allowing for sodium diffusion. The β-alumina structure is similar except that the spinel units are aligned differently creating a smaller and less flexible conduction plane. In addition to being more flexible, β"-alumina is able to absorb stabilizing ions into the spinel unit, whereas β-alumina does not appear to have that capability. In this paper we analyze the differences in these structures that affect sodium conduction. This comparison will assist in understanding the β"-alumina structure and enhancing its capacity for greater conduction of sodium.

Original languageEnglish
Title of host publicationCeramic Materials for Energy Applications III - A Collection of Papers Presented at the 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
Pages57-63
Number of pages7
Edition9
Publication statusPublished - Jan 15 2014
EventCeramic Materials for Energy Applications III - 37th International Conference on Advanced Ceramics and Composites, ICACC 2013 - Daytona Beach, FL, United States
Duration: Jan 27 2013Feb 1 2013

Publication series

NameCeramic Engineering and Science Proceedings
Number9
Volume34
ISSN (Print)0196-6219

Other

OtherCeramic Materials for Energy Applications III - 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
CountryUnited States
CityDaytona Beach, FL
Period1/27/132/1/13

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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  • Cite this

    Kennedy, E., & Birnie, D. P. (2014). The effect of geometric factors on sodium conduction: A comparison of beta- And beta"-alumina. In Ceramic Materials for Energy Applications III - A Collection of Papers Presented at the 37th International Conference on Advanced Ceramics and Composites, ICACC 2013 (9 ed., pp. 57-63). (Ceramic Engineering and Science Proceedings; Vol. 34, No. 9).