Stabilizing lithium and sodium fast-ion conduction in solid polyhedral-borate salts at device-relevant temperatures

被引：106

作者：

Tang, Wan Si ^{[1
,2
]}

Matsuo, Motoaki ^{[3
]}

Wu, Hui ^{[1
]}

Stavila, Vitalie ^{[4
]}

Unemoto, Atsushi ^{[5
]}

Orimo, Shin-ichi ^{[3
,5
]}

Udovic, Terrence J. ^{[1
]}

机构：

[1] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[4] Sandia Natl Labs, Energy Nanomat, Livermore, CA 94551 USA

[5] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

ENERGY STORAGE MATERIALS | 2016年 / 4卷

基金：

日本科学技术振兴机构;

关键词：

Ball-milling; Closo-borate; Nanostructure; Phase transition; Superionic conductor;

D O I：

10.1016/j.ensm.2016.03.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By a variety of techniques including X-ray powder diffraction, quasielastic neutron scattering, and AC impedance, we have probed the effect of mechanical milling on the phase behaviors of the different lithium and sodium closo-borate salt compounds containing B12H122-, B10H102-, and CB11H12- anions. We have found that the crystallite-size reduction and disordering effects of such milling enables the room-T stabilization of their high-T-like superionic-conducting phases. This demonstrates a viable strategy for better exploiting the impressive cation mobilities that are typically restricted to somewhat higher temperatures for this class of compounds. (C) 2016 Elsevier BY. All rights reserved.

引用

页码：79 / 83

页数：5

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