TY - GEN
T1 - The effect of geometric factors on sodium conduction
T2 - Ceramic Materials for Energy Applications III - 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
AU - Kennedy, Emma
AU - Birnie, Dunbar P.
PY - 2014/1/15
Y1 - 2014/1/15
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84891896932
SN - 9781118807583
T3 - Ceramic Engineering and Science Proceedings
SP - 57
EP - 63
BT - Ceramic Materials for Energy Applications III - A Collection of Papers Presented at the 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
Y2 - 27 January 2013 through 1 February 2013
ER -