Sodium superionic conduction in Na2B12H12

Terrence J. Udovic; Motoaki Matsuo; Atsushi Unemoto; Nina Verdal; Vitalie Stavila; Alexander V. Skripov; John J. Rush; Hitoshi Takamura; Shin-ichi Orimo

doi:10.1039/C3CC49805K

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Sodium superionic conduction in Na₂B₁₂H₁₂†

Terrence J. Udovic,*^a Motoaki Matsuo,^b Atsushi Unemoto,^c Nina Verdal,^ad Vitalie Stavila,^e Alexander V. Skripov,^f John J. Rush,^ad Hitoshi Takamura^g and Shin-ichi Orimo*^bc

Author affiliations

* Corresponding authors

^a NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899-6102, USA
E-mail: udovic@nist.gov

^b Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
E-mail: orimo@imr.tohoku.ac.jp

^c WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

^d Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA

^e Sandia National Laboratories, Livermore, CA 94551, USA

^f Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg 620990, Russia

^g Graduate School of Engineering, Tohoku University, Sendai, Japan

Abstract

Impedance measurements indicate that Na₂B₁₂H₁₂ exhibits dramatic Na⁺ conductivity (on the order of 0.1 S cm⁻¹) above its order-disorder phase-transition at ≈529 K, rivaling that of current, solid-state, ceramic-based, Na-battery electrolytes. Superionicity may be aided by the large size, quasispherical shape, and high rotational mobility of the B₁₂H₁₂²⁻ anions.

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Article information

DOI: https://doi.org/10.1039/C3CC49805K
Article type: Communication
Submitted: 27 Dec 2013
Accepted: 20 Feb 2014
First published: 21 Feb 2014

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Chem. Commun., 2014,50, 3750-3752

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Sodium superionic conduction in Na₂B₁₂H₁₂

T. J. Udovic, M. Matsuo, A. Unemoto, N. Verdal, V. Stavila, A. V. Skripov, J. J. Rush, H. Takamura and S. Orimo, Chem. Commun., 2014, 50, 3750 DOI: 10.1039/C3CC49805K

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