Conduction plane geometry factors for the β"-alumina structure

Emma Kennedy, Dunbar P Birnie

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

Abstract

The β"-alumina structure is important for sodium battery systems. Its structure is composed of layers of (111) oriented spinel-structure units separated by sodium containing conduction planes that are wide compared to the spinel units. Of critical interest is whether composition or structure modifications can be designed that would assist in speeding up the sodium conduction within these conduction planes. The present work looks at the geometric limitations to expansion or contraction of this conduction plane as we substitute different ions into the lattice in different sites. Clearly a wider or narrower plane could influence the conduction rate by influencing the sodium motion activation energy. We take a detailed look at the structure and specifically the oxygen atoms that "sandwich" the sodium conduction environment. These atoms (the O(3) and O(4) sites) are analyzed for different β"-alumina structures to understand the subtle but important changes that sodium ions may feel when diffusing in different compositions of this material.

Original languageEnglish
Title of host publicationCeramic Transactions
Pages201-208
Number of pages8
Volume241
Publication statusPublished - 2013
EventAdvances in Materials Science for Environmental and Energy Technologies II - Materials Science and Technology 2012 Conference, MS and T 2012 - Pittsburgh, PA, United States
Duration: Oct 7 2012Oct 11 2012

Publication series

NameCeramic Transactions
Volume241
ISSN (Print)10421122

Other

OtherAdvances in Materials Science for Environmental and Energy Technologies II - Materials Science and Technology 2012 Conference, MS and T 2012
CountryUnited States
CityPittsburgh, PA
Period10/7/1210/11/12

Fingerprint

Aluminum Oxide
Alumina
Sodium
Geometry
Ions
Atoms
Chemical analysis
Activation energy
Oxygen

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Kennedy, E., & Birnie, D. P. (2013). Conduction plane geometry factors for the β"-alumina structure. In Ceramic Transactions (Vol. 241, pp. 201-208). (Ceramic Transactions; Vol. 241).

Conduction plane geometry factors for the β"-alumina structure. / Kennedy, Emma; Birnie, Dunbar P.

Ceramic Transactions. Vol. 241 2013. p. 201-208 (Ceramic Transactions; Vol. 241).

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

Kennedy, E & Birnie, DP 2013, Conduction plane geometry factors for the β"-alumina structure. in Ceramic Transactions. vol. 241, Ceramic Transactions, vol. 241, pp. 201-208, Advances in Materials Science for Environmental and Energy Technologies II - Materials Science and Technology 2012 Conference, MS and T 2012, Pittsburgh, PA, United States, 10/7/12.
Kennedy E, Birnie DP. Conduction plane geometry factors for the β"-alumina structure. In Ceramic Transactions. Vol. 241. 2013. p. 201-208. (Ceramic Transactions).
Kennedy, Emma ; Birnie, Dunbar P. / Conduction plane geometry factors for the β"-alumina structure. Ceramic Transactions. Vol. 241 2013. pp. 201-208 (Ceramic Transactions).
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