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Li+ ion conductor based on NaBr doped with LiBH4

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Abstract

In this work, the guest Li+ conduction properties in NaBr–LiBH4 system were investigated. It was suggested that the guest Li+ ions occupy the Na+ sites and BH4− ions substitute the Br− ions in NaBr. The dominant Li+ conduction in NaBr–LiBH4 system was demonstrated by the combination of electrochemical measurements and time-of-flight secondary ion mass spectrometry. The guest Li+ ion conductivity of 15NaBr·LiBH4 was measured to be 1 × 10−7 S/cm at 313 K. The present results indicate that the guest Li+ conductors are not restricted to the previous reported iodides (NaI, KI), but other Li-free compounds have the possibility to become the candidates for the guest Li+ ion conductors.

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ACKNOWLEDGMENTS

This work was supported by JSPS KAKENHI Grant-in-Aid for Young Scientists, 18K14319 and The Foundation for The Promotion of Ion Engineering.

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Authors and Affiliations

  1. Department of Physical Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya, 466-8555, Japan

    Reona Miyazaki, Masatoshi Shomura, Reina Miyagawa & Takehiko Hihara

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  1. Reona Miyazaki
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  2. Masatoshi Shomura
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  3. Reina Miyagawa
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  4. Takehiko Hihara
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Corresponding author

Correspondence to Reona Miyazaki.

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Supplementary materials

The supplementary material for this article can be found at https://doi.org/10.1557/mrc.2018.225.

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Miyazaki, R., Shomura, M., Miyagawa, R. et al. Li+ ion conductor based on NaBr doped with LiBH4. MRS Communications 9, 304–309 (2019). https://doi.org/10.1557/mrc.2018.225

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  • DOI: https://doi.org/10.1557/mrc.2018.225

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