Synthesis of a Bimetallic Dodecaborate LiNaB<sub>12</sub>H<sub>12</sub> with Outstanding Superionic Conductivity

He, Liqing; Li, Hai-Wen; Nakajima, Hironori; Tumanov, Nikolay; Filinchuk, Yaroslav; Hwang, Son-Jong; Sharma, Manish; Hagemann, Hans-Rudolf; Akiba, Etsuo

doi:10.1021/acs.chemmater.5b01568

Scientific article

English

Synthesis of a Bimetallic Dodecaborate LiNaB₁₂H₁₂ with Outstanding Superionic Conductivity

ContributorsHe, Liqing; Li, Hai-Wen; Nakajima, Hironori; Tumanov, Nikolay; Filinchuk, Yaroslav; Hwang, Son-Jong; Sharma, Manish; Hagemann, Hans-Rudolf; Akiba, Etsuo

Published inChemistry of materials, vol. 27, no. 16, p. 5483-5486

Publication date2015

Abstract

A bimetallic dodecaborate LiNaB12H12 has been successfully synthesized for the first time, through a sintering process of LiBH4, NaBH4 and B10H14. LiNaB12H12 has a cubic Pa-3 space group symmetry at room temperature, and transforms into a high temperature phase with Fm-3m symmetry at 488 K, which is lower than that of Li2B12H12 and Na2B12H12. The ionic conductivity at 550 K reaches 0.79 S/cm, which is approximately 8 times higher than that of Na2B12H12 and 11 times higher than that of Li2B12H12. The Li/Na compositional and thus an induced positional disorder in LiNaB12H12 are suggested to be responsible for the reduced phase transition temperature and the improved super ionic conductivity compared to its monometallic counterparts.

Affiliation entities

Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

Citation (ISO format)

HE, Liqing et al. Synthesis of a Bimetallic Dodecaborate LiNaB₁₂H₁₂ with Outstanding Superionic Conductivity. In: Chemistry of materials, 2015, vol. 27, n° 16, p. 5483–5486. doi: 10.1021/acs.chemmater.5b01568

Article (Published version)

Identifiers

PID : unige:75041
DOI : 10.1021/acs.chemmater.5b01568

ISSN of the journal0897-4756

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Synthesis of a Bimetallic Dodecaborate LiNaB12H12 with Outstanding Superionic Conductivity

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Synthesis of a Bimetallic Dodecaborate LiNaB₁₂H₁₂ with Outstanding Superionic Conductivity