Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH<sub>4</sub>)<sub>3</sub>X, X = Cl, Br, I

Payandeh GharibDoust, SeyedHosein; Brighi, Matteo; Sadikin, Yolanda; Ravnsbæk, Dorthe B.; Cerny, Radovan; Skibsted, Jørgen; Jensen, Torben R.

doi:10.1021/acs.jpcc.7b04905

Scientific article

English

Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH₄)₃X, X = Cl, Br, I

Contributors

Payandeh GharibDoust, SeyedHosein; Brighi, Matteo; Sadikin, Yolanda; Ravnsbæk, Dorthe B.; Cerny, Radovan; Skibsted, Jørgen; Jensen, Torben R.

Published in

Journal of Physical Chemistry. C, vol. 121, no. 35, p. 19010-19021

Publication date

2017

Abstract

In this work, a new type of addition reaction between La(BH4)3 and LiX, X = Cl, Br, I, is used to synthesize LiLa(BH4)3Cl and two new compounds LiLa(BH4)3X, X = Br, I. This method increases the amounts of LiLa(BH4)3X and the sample purity. The highest Li-ion conductivity is observed for LiLa(BH4)3Br, 7.74 × 10−5 S/cm at room temperature (RT) and 1.8 × 10−3 S/cm at 140 °C with an activation energy of 0.272 eV. Topological analysis suggests a new lithium ion conduction pathway with two new different types of bottleneck windows. The sizes of these windows reveal an opposite size change with increasing lattice parameter, that is, increasing size of the halide ion in the structure. Thus, we conclude that the sizes of both windows are important for the lithium ion conduction in LiLa(BH4)3X compounds. The lithium ion conductivity is measured over one to three heating cycles and with different contacts (gold or carbon) between the electrodes and the electrolyte. Moreover, 11B MAS NMR is used to verify the contents of the samples, whereas thermogravimetric analysis shows 4.8 and 3.6 wt % of hydrogen release for LiLa(BH4)3Cl and LiLa(BH4)3Br in the temperature range RT to 400 °C.

Keywords

Ionic conductor
Borohydride
Powder diffraction

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

UNIGE research groups

Groupe Cerny

Citation (ISO format)

PAYANDEH GHARIBDOUST, SeyedHosein et al. Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH₄)₃X, X = Cl, Br, I. In: Journal of Physical Chemistry. C, 2017, vol. 121, n° 35, p. 19010–19021. doi: 10.1021/acs.jpcc.7b04905

Article (Published version)

Identifiers

PID : unige:99694
DOI : 10.1021/acs.jpcc.7b04905

Journal ISSN

1932-7447

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23/11/2017 16:57:00

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23/11/2017 16:57:00

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15/03/2023 02:28:38

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15/03/2023 02:28:38

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31/10/2024 08:49:18

Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH₄)₃X, X = Cl, Br, I

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

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First validation

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Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH4)3X, X = Cl, Br, I

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

Main files (1)

Identifiers

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation

Synthesis, Structure, and Li-Ion Conductivity of LiLa(BH₄)₃X, X = Cl, Br, I