Magnesium-Antimony Liquid Metal Battery for Stationary Energy Storage
Magnesium-Antimony Liquid Metal Battery for Stationary Energy Storage
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DOI：
10.1021/ja209759s
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发表时间：
2012-02-01
影响因子：
15
通讯作者：
Sadoway, Donald R.
中科院分区：
文献类型：
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作者：
Bradwell, David J.;Kim, Hojong;Sadoway, Donald R.
电池是电网的一个有吸引力的选择：规模储能应用，因为它们的占地面积小，选址灵活。提出并表征了一种高温（700 ℃）镁锑（Mg 11 Sb）液态金属电池，其包括Mg的负极、熔融盐电解质（MgCl 2-KCl-NaCl）和Sb的正极。由于相邻的盐相和金属相的不相容性，它们按密度分层成三个不同的层。电池以50至200 mA/cm（2）的速率循环，并表现出高达69%的DC-DC能量效率。电池组件的自隔离性质和低成本材料的使用导致了用于固定能量存储应用的有前途的技术。
Batteries are an attractive option for grid: scale energy storage applications because of their small footprint and flexible siting. A high-temperature (700 degrees C) magnesium antimony (MgllSb) liquid metal battery comprising a negative electrode of Mg, a molten salt electrolyte (MgCL2-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.