Sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6

H. Oguchi; M. Matsuo; S. Kuromoto; H. Kuwano; S. Orimo

doi:10.1063/1.3681362

Sodium-ion conduction in complex hydrides NaAlH ₄ and Na ₃AlH ₆

H. Oguchi, M. Matsuo, S. Kuromoto, H. Kuwano, S. Orimo

Tohoku University

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27 Citations (Scopus)

Abstract

We have studied sodium-ion conduction in complex hydrides NaAlH ₄ and Na ₃AlH ₆. The electrical conductivities of these complex hydrides were studied using ac impedance measurements at temperatures up to 363 K for NaAlH ₄ and 433 K for Na ₃AlH ₆. Nyquist plots obtained by the measurements indicated the sodium-ion conduction. Also, dc measurements showed that sodium-ion transference numbers of NaAlH ₄ and Na ₃AlH ₆ were almost unity. Na ₃AlH ₆ exhibited the sodium-ion conduction of 4.1 × 10 ^-4 S/cm at 433 K. This study will open up research on complex hydrides as solid-state sodium-ion conductors.

Original language	English
Article number	036102
Journal	Journal of Applied Physics
Volume	111
Issue number	3
DOIs	https://doi.org/10.1063/1.3681362
Publication status	Published - 2012 Feb 1

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title = "Sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6 ",

abstract = "We have studied sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6. The electrical conductivities of these complex hydrides were studied using ac impedance measurements at temperatures up to 363 K for NaAlH 4 and 433 K for Na 3AlH 6. Nyquist plots obtained by the measurements indicated the sodium-ion conduction. Also, dc measurements showed that sodium-ion transference numbers of NaAlH 4 and Na 3AlH 6 were almost unity. Na 3AlH 6 exhibited the sodium-ion conduction of 4.1 × 10 -4 S/cm at 433 K. This study will open up research on complex hydrides as solid-state sodium-ion conductors.",

author = "H. Oguchi and M. Matsuo and S. Kuromoto and H. Kuwano and S. Orimo",

note = "Funding Information: This work was partially supported by KAKENHI (No. 18GS0203 and No. 22 760 529), NEXT program (No. GR008), and cooperative program of the ARCMG-IMR, Tohoku University.",

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T1 - Sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6

AU - Oguchi, H.

AU - Matsuo, M.

AU - Kuromoto, S.

AU - Kuwano, H.

AU - Orimo, S.

N1 - Funding Information: This work was partially supported by KAKENHI (No. 18GS0203 and No. 22 760 529), NEXT program (No. GR008), and cooperative program of the ARCMG-IMR, Tohoku University.

PY - 2012/2/1

Y1 - 2012/2/1

N2 - We have studied sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6. The electrical conductivities of these complex hydrides were studied using ac impedance measurements at temperatures up to 363 K for NaAlH 4 and 433 K for Na 3AlH 6. Nyquist plots obtained by the measurements indicated the sodium-ion conduction. Also, dc measurements showed that sodium-ion transference numbers of NaAlH 4 and Na 3AlH 6 were almost unity. Na 3AlH 6 exhibited the sodium-ion conduction of 4.1 × 10 -4 S/cm at 433 K. This study will open up research on complex hydrides as solid-state sodium-ion conductors.

AB - We have studied sodium-ion conduction in complex hydrides NaAlH 4 and Na 3AlH 6. The electrical conductivities of these complex hydrides were studied using ac impedance measurements at temperatures up to 363 K for NaAlH 4 and 433 K for Na 3AlH 6. Nyquist plots obtained by the measurements indicated the sodium-ion conduction. Also, dc measurements showed that sodium-ion transference numbers of NaAlH 4 and Na 3AlH 6 were almost unity. Na 3AlH 6 exhibited the sodium-ion conduction of 4.1 × 10 -4 S/cm at 433 K. This study will open up research on complex hydrides as solid-state sodium-ion conductors.

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Sodium-ion conduction in complex hydrides NaAlH ₄ and Na ₃AlH ₆

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