Stannaborates: tuning the ion conductivity of dodecaborate salts with tin substitution
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Open access
Authors
Hales, Thomas A.
Møller, Kasper T.
Humphries, Terry D.
D’Angelo, A.M.
Buckley, Craig E.
Paskevicius, Mark
Date
2023Type
Journal Article
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Hales, T.A. and Møller, K.T. and Humphries, T.D. and D’Angelo, A.M. and Buckley, C.E. and Paskevicius, M. 2023. Stannaborates: tuning the ion conductivity of dodecaborate salts with tin substitution. Physical Chemistry Chemical Physics. 25 (45): pp. 31249-31256.
Source Title
Physical Chemistry Chemical Physics
ISSN
Faculty
Faculty of Science and Engineering
School
School of Elec Eng, Comp and Math Sci (EECMS)
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Abstract
Metal substituted dodecaborate anions can be coupled with alkali metal cations to have great potential as solid-state ion conductors for battery applications. A tin atom can replace a B-H unit within an unsubstituted dodecaborate cage to produce a stable, polar divalent anion. The chemical and structural change in forming a stannaborate results in a modified crystal structure of respective group 1 metal salts, and as a result, improves the material's ion conductivity. Li2B11H11Sn shows high ion conductivity of ∼8 mS cm−1 at 130 °C, similar to the state-of-the-art LiCB11H12 at these temperatures, however, obtaining high ion conductivity at room temperature is not possible with pristine alkali metal stannaborates.