Anharmonicity in LiBH4-LiI induced by anion exchange and temperature

A. Borgschulte, R. Gremaud, S. Kato, N. P. Stadie, A. Remhof, A. Züttel, M. Matsuo, S. I. Orimo

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Abstract

The feasibility of spatially resolved Raman spectroscopy probing diffusion multiples as a high-throughput method to study phase transformations in Li-ion conductors is demonstrated. The method is applied to the pseudobinary LiBH 4-LiI system, which shows high Li-ion conductivity in the HT-phase of LiBH4. The vibrational properties measured as a function of composition and temperature corroborate the formation of a solid solution of Li (BH4)1-cIc over nearly the entire phase diagram (0<c0.8±0.2). The results shed light on anharmonic effects responsible for the structural phase transformation in this system.

Original languageEnglish
Article number031916
JournalApplied Physics Letters
Volume97
Issue number3
DOIs
Publication statusPublished - 2010 Jul 19

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Borgschulte, A., Gremaud, R., Kato, S., Stadie, N. P., Remhof, A., Züttel, A., Matsuo, M., & Orimo, S. I. (2010). Anharmonicity in LiBH4-LiI induced by anion exchange and temperature. Applied Physics Letters, 97(3), [031916]. https://doi.org/10.1063/1.3467260