A Novel Inorganic Low Melting Electrolyte for Secondary-Aluminum-Nickel Sulfide Batteries

H.A. Hjuler; S. von Winbrush; Rolf W. Berg; Niels Bjerrum

doi:10.1149/1.2096875

A Novel Inorganic Low Melting Electrolyte for Secondary-Aluminum-Nickel Sulfide Batteries

H.A. Hjuler
, S. von Winbrush
, Rolf W. Berg
, Niels Bjerrum

Department of Chemistry

Technical University of Denmark

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

A new, inorganic low melting electrolyte with the composition LiAlCl4-NaAlCl4-NaAlBr4-KAlCl4 (3:2:3:2) [or equivalentlyLiAlBr4-NaAlCl4-KAlCl4 (3:5:2)] has been developed. The melting point for this neutral melt is 86°C; the decompositionpotential is approximately 2.0V; the ionic conductivity is measured in the range 97°–401°C and is 0.142s cm–1 at100°C, and the density is 2.07g cm–3. The conductivity seems to be an almost linear combination of the conductivities ofthe four individual halo salts which form the melt. Other examined higher melting mixtures exhibit conductivities deviatingless than ±10% from their combination expectations. The low melting electrolyte is employed in the rechargeable batterysystem Al/electrolyte/Ni3S2 at 100°C. The open-circuit voltage of this system is from 0.82 to 1.0V. Dendrite-free aluminumdeposits are obtained. The cycling behavior of the battery system is reported.

Original language	English
Journal	Journal of The Electrochemical Society
Volume	136
Issue number	4
Pages (from-to)	901-906
ISSN	0013-4651
DOIs	https://doi.org/10.1149/1.2096875
Publication status	Published - 1989

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Copyright The Electrochemical Society, Inc. [1989]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

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title = "A Novel Inorganic Low Melting Electrolyte for Secondary-Aluminum-Nickel Sulfide Batteries",

abstract = "A new, inorganic low melting electrolyte with the composition LiAlCl4-NaAlCl4-NaAlBr4-KAlCl4 (3:2:3:2) [or equivalentlyLiAlBr4-NaAlCl4-KAlCl4 (3:5:2)] has been developed. The melting point for this neutral melt is 86°C; the decompositionpotential is approximately 2.0V; the ionic conductivity is measured in the range 97°–401°C and is 0.142s cm–1 at100°C, and the density is 2.07g cm–3. The conductivity seems to be an almost linear combination of the conductivities ofthe four individual halo salts which form the melt. Other examined higher melting mixtures exhibit conductivities deviatingless than ±10\% from their combination expectations. The low melting electrolyte is employed in the rechargeable batterysystem Al/electrolyte/Ni3S2 at 100°C. The open-circuit voltage of this system is from 0.82 to 1.0V. Dendrite-free aluminumdeposits are obtained. The cycling behavior of the battery system is reported.",

author = "H.A. Hjuler and Winbrush, \{S. von\} and Berg, \{Rolf W.\} and Niels Bjerrum",

note = "Copyright The Electrochemical Society, Inc. [1989]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).",

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T1 - A Novel Inorganic Low Melting Electrolyte for Secondary-Aluminum-Nickel Sulfide Batteries

AU - Hjuler, H.A.

AU - Winbrush, S. von

AU - Berg, Rolf W.

AU - Bjerrum, Niels

N1 - Copyright The Electrochemical Society, Inc. [1989]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

PY - 1989

Y1 - 1989

N2 - A new, inorganic low melting electrolyte with the composition LiAlCl4-NaAlCl4-NaAlBr4-KAlCl4 (3:2:3:2) [or equivalentlyLiAlBr4-NaAlCl4-KAlCl4 (3:5:2)] has been developed. The melting point for this neutral melt is 86°C; the decompositionpotential is approximately 2.0V; the ionic conductivity is measured in the range 97°–401°C and is 0.142s cm–1 at100°C, and the density is 2.07g cm–3. The conductivity seems to be an almost linear combination of the conductivities ofthe four individual halo salts which form the melt. Other examined higher melting mixtures exhibit conductivities deviatingless than ±10% from their combination expectations. The low melting electrolyte is employed in the rechargeable batterysystem Al/electrolyte/Ni3S2 at 100°C. The open-circuit voltage of this system is from 0.82 to 1.0V. Dendrite-free aluminumdeposits are obtained. The cycling behavior of the battery system is reported.

AB - A new, inorganic low melting electrolyte with the composition LiAlCl4-NaAlCl4-NaAlBr4-KAlCl4 (3:2:3:2) [or equivalentlyLiAlBr4-NaAlCl4-KAlCl4 (3:5:2)] has been developed. The melting point for this neutral melt is 86°C; the decompositionpotential is approximately 2.0V; the ionic conductivity is measured in the range 97°–401°C and is 0.142s cm–1 at100°C, and the density is 2.07g cm–3. The conductivity seems to be an almost linear combination of the conductivities ofthe four individual halo salts which form the melt. Other examined higher melting mixtures exhibit conductivities deviatingless than ±10% from their combination expectations. The low melting electrolyte is employed in the rechargeable batterysystem Al/electrolyte/Ni3S2 at 100°C. The open-circuit voltage of this system is from 0.82 to 1.0V. Dendrite-free aluminumdeposits are obtained. The cycling behavior of the battery system is reported.

U2 - 10.1149/1.2096875

DO - 10.1149/1.2096875

M3 - Journal article

SN - 0013-4651

VL - 136

SP - 901

EP - 906

JO - Journal of The Electrochemical Society

JF - Journal of The Electrochemical Society

IS - 4

ER -

A Novel Inorganic Low Melting Electrolyte for Secondary-Aluminum-Nickel Sulfide Batteries

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