Sodium ionic conduction in complex hydrides with [BH 4] - and [NH 2] - anions

Motoaki Matsuo; Shingo Kuromoto; Toyoto Sato; Hiroyuki Oguchi; Hitoshi Takamura; Shin Ichi Orimo

doi:10.1063/1.4716021

Sodium ionic conduction in complex hydrides with [BH ₄] ^- and [NH ₂] ^- anions

Motoaki Matsuo, Shingo Kuromoto, Toyoto Sato, Hiroyuki Oguchi, Hitoshi Takamura, Shin Ichi Orimo

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

We report the experimental results of structural and sodium ionic conductive properties of the Na(BH ₄)-Na(NH ₂)-NaI system. Na(BH ₄) _0.5(NH ₂) _0.5 with [BH ₄] ^- and [NH ₂] ^- complex anions formed by combining Na(BH ₄) and Na(NH ₂) complex hydrides shows the most superior sodium ionic conductivity of 2 × 10 ^-6 S/cm at 300 K because of the specific antiperovskite-type structure with vacancies in the Na ⁺ site Furthermore, Na(BH ₄) _0.5(NH ₂) _0.5 shows a high electrochemical stability of at least 6 V (vs Na ⁺/Na). The result suggests that Na(BH ₄) _0.5(NH ₂) _0.5 could be a potential candidate for solid electrolyte.

Original language	English
Article number	203904
Journal	Applied Physics Letters
Volume	100
Issue number	20
DOIs	https://doi.org/10.1063/1.4716021
Publication status	Published - 2012 May 14
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Sodium ionic conduction in complex hydrides with [BH 4] - and [NH 2] - anions",

abstract = "We report the experimental results of structural and sodium ionic conductive properties of the Na(BH 4)-Na(NH 2)-NaI system. Na(BH 4) 0.5(NH 2) 0.5 with [BH 4] - and [NH 2] - complex anions formed by combining Na(BH 4) and Na(NH 2) complex hydrides shows the most superior sodium ionic conductivity of 2 × 10 -6 S/cm at 300 K because of the specific antiperovskite-type structure with vacancies in the Na + site Furthermore, Na(BH 4) 0.5(NH 2) 0.5 shows a high electrochemical stability of at least 6 V (vs Na +/Na). The result suggests that Na(BH 4) 0.5(NH 2) 0.5 could be a potential candidate for solid electrolyte.",

author = "Motoaki Matsuo and Shingo Kuromoto and Toyoto Sato and Hiroyuki Oguchi and Hitoshi Takamura and Orimo, {Shin Ichi}",

note = "Funding Information: The authors would like to thank Ms. N. Warifune and Ms. H. Ohmiya for their technical support. This research was funded by Grant-in-Aid for Young Scientists (B) (22760529), “Funding Program for Next Generation World-Leading Researchers (GR008),” and Integrated Project of ICC-IMR.",

year = "2012",

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doi = "10.1063/1.4716021",

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T1 - Sodium ionic conduction in complex hydrides with [BH 4] - and [NH 2] - anions

AU - Matsuo, Motoaki

AU - Kuromoto, Shingo

AU - Sato, Toyoto

AU - Oguchi, Hiroyuki

AU - Takamura, Hitoshi

AU - Orimo, Shin Ichi

N1 - Funding Information: The authors would like to thank Ms. N. Warifune and Ms. H. Ohmiya for their technical support. This research was funded by Grant-in-Aid for Young Scientists (B) (22760529), “Funding Program for Next Generation World-Leading Researchers (GR008),” and Integrated Project of ICC-IMR.

PY - 2012/5/14

Y1 - 2012/5/14

N2 - We report the experimental results of structural and sodium ionic conductive properties of the Na(BH 4)-Na(NH 2)-NaI system. Na(BH 4) 0.5(NH 2) 0.5 with [BH 4] - and [NH 2] - complex anions formed by combining Na(BH 4) and Na(NH 2) complex hydrides shows the most superior sodium ionic conductivity of 2 × 10 -6 S/cm at 300 K because of the specific antiperovskite-type structure with vacancies in the Na + site Furthermore, Na(BH 4) 0.5(NH 2) 0.5 shows a high electrochemical stability of at least 6 V (vs Na +/Na). The result suggests that Na(BH 4) 0.5(NH 2) 0.5 could be a potential candidate for solid electrolyte.

AB - We report the experimental results of structural and sodium ionic conductive properties of the Na(BH 4)-Na(NH 2)-NaI system. Na(BH 4) 0.5(NH 2) 0.5 with [BH 4] - and [NH 2] - complex anions formed by combining Na(BH 4) and Na(NH 2) complex hydrides shows the most superior sodium ionic conductivity of 2 × 10 -6 S/cm at 300 K because of the specific antiperovskite-type structure with vacancies in the Na + site Furthermore, Na(BH 4) 0.5(NH 2) 0.5 shows a high electrochemical stability of at least 6 V (vs Na +/Na). The result suggests that Na(BH 4) 0.5(NH 2) 0.5 could be a potential candidate for solid electrolyte.

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Sodium ionic conduction in complex hydrides with [BH ₄] ^- and [NH ₂] ^- anions

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