Magnesium-antimony liquid metal battery for stationary energy storage

David J. Bradwell; Hojong Kim; Aislinn H.C. Sirk; Donald R. Sadoway

doi:10.1021/ja209759s

Magnesium-antimony liquid metal battery for stationary energy storage

David J. Bradwell, Hojong Kim, Aislinn H.C. Sirk, Donald R. Sadoway

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

243 Scopus citations

Abstract

Batteries are an attractive option for grid-scale energy storage applications because of their small footprint and flexible siting. A high-temperature (700 °C) magnesium-antimony (Mg||Sb) liquid metal battery comprising a negative electrode of Mg, a molten salt electrolyte (MgCl ₂-KCl-NaCl), and a positive electrode of Sb is proposed and characterized. Because of the immiscibility of the contiguous salt and metal phases, they stratify by density into three distinct layers. Cells were cycled at rates ranging from 50 to 200 mA/cm ² and demonstrated up to 69% DC-DC energy efficiency. The self-segregating nature of the battery components and the use of low-cost materials results in a promising technology for stationary energy storage applications.

Original language	English (US)
Pages (from-to)	1895-1897
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	134
Issue number	4
DOIs	https://doi.org/10.1021/ja209759s
State	Published - Feb 1 2012

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja209759s

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abstract = "Batteries are an attractive option for grid-scale energy storage applications because of their small footprint and flexible siting. A high-temperature (700 °C) magnesium-antimony (Mg||Sb) liquid metal battery comprising a negative electrode of Mg, a molten salt electrolyte (MgCl 2-KCl-NaCl), and a positive electrode of Sb is proposed and characterized. Because of the immiscibility of the contiguous salt and metal phases, they stratify by density into three distinct layers. Cells were cycled at rates ranging from 50 to 200 mA/cm 2 and demonstrated up to 69% DC-DC energy efficiency. The self-segregating nature of the battery components and the use of low-cost materials results in a promising technology for stationary energy storage applications.",

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AU - Bradwell, David J.

AU - Kim, Hojong

AU - Sirk, Aislinn H.C.

AU - Sadoway, Donald R.

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AB - Batteries are an attractive option for grid-scale energy storage applications because of their small footprint and flexible siting. A high-temperature (700 °C) magnesium-antimony (Mg||Sb) liquid metal battery comprising a negative electrode of Mg, a molten salt electrolyte (MgCl 2-KCl-NaCl), and a positive electrode of Sb is proposed and characterized. Because of the immiscibility of the contiguous salt and metal phases, they stratify by density into three distinct layers. Cells were cycled at rates ranging from 50 to 200 mA/cm 2 and demonstrated up to 69% DC-DC energy efficiency. The self-segregating nature of the battery components and the use of low-cost materials results in a promising technology for stationary energy storage applications.

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Magnesium-antimony liquid metal battery for stationary energy storage

Abstract

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