Sodium ionic conduction in complex hydrides with [BH4]- and [NH2]- anions

被引：77

作者：

Matsuo, Motoaki ^{[1
]}

Kuromoto, Shingo ^{[1
]}

Sato, Toyoto ^{[2
]}

Oguchi, Hiroyuki ^{[3
]}

Takamura, Hitoshi ^{[3
]}

Orimo, Shin-ichi ^{[1
]}

机构：

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

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

[3] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 20期

关键词：

CATHODE MATERIALS; HYDROGEN STORAGE; BETA-ALUMINA; ELECTROLYTE; BATTERIES; DEPENDENCE;

D O I：

10.1063/1.4716021

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the experimental results of structural and sodium ionic conductive properties of the Na(BH4)-Na(NH2)-NaI system. Na(BH4)(0.5)(NH2)(0.5) with [BH4](-) and [NH2](-) complex anions formed by combining Na(BH4) and Na(NH2) complex hydrides shows the most superior sodium ionic conductivity of 2 x 10(-6) S/cm at 300K because of the specific antiperovskite-type structure with vacancies in the Na+ site Furthermore, Na(BH4)(0.5)(NH2)(0.5) shows a high electrochemical stability of at least 6 V (vs Na+/Na). The result suggests that Na(BH4)(0.5)(NH2)(0.5) could be a potential candidate for solid electrolyte. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4716021]

引用

页数：4

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