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Title: Multi-element liquid metal battery

An electrochemical cell includes a negative electrode having at least two active metals, a positive electrode having a metal or alloy, and an electrolyte having a cation of each of the active metals. The electrolyte defines first and second interfaces with the positive electrode being in contact with the first interface and the negative electrode being in contact with the second interface. The electrolyte is configured to allow the cations of the active metals to be transferred from the negative electrode to the positive electrode during discharging and to be transferred from the positive electrode to the negative electrode during charging. The electrolyte exists as a liquid phase and the negative electrode and the positive electrode exist as liquid or partially liquid phases at operating temperatures of the electrochemical cell.
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OSTI Identifier:
Massachusetts Institute of Technology (Cambridge, MA) ARPA-E
Patent Number(s):
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Resource Relation:
Patent File Date: 2015 Dec 14
Research Org:
Massachussetts Institute of Technology, Cambridge, MA (United States)
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Country of Publication:
United States

Works referenced in this record:

Metal--Salt Interactions at High Temperatures: The Solubilities of Some Alkaline Earth Metals in their Halides
journal, June 1949
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The Electrical Conductivity of Solutions of Metals in Their Molten Halides. VIII. Alkaline Earth Metal Systems
journal, July 1966
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The Sodium?Tin Liquid-Metal Cell
journal, January 1962
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  • DOI: 10.1149/1.2425523