Patent ID: 9000713
Filing Date: 2015-04-07
Classification: H01M,H02J,Y02E

Abstract:
1. An electrochemical cell comprising: a positive electrode comprising a first liquid phase comprising lead and antimony; a second liquid phase defining an electrolyte comprising a halide salt of an active alkali metal, the second liquid phase defining a first interface and a second interface, the positive electrode being in contact with the second liquid phase at the first interface; and a third liquid phase separated from the first liquid phase and defining a negative electrode comprising the active alkali metal in atomic form, the third liquid phase being in contact with the second liquid phase at the second interface, the second liquid phase allowing cations of the active alkali metal 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, wherein in a discharged state of the electrochemical cell, the positive electrode comprises the active alkali metal in atomic form and the lead and antimony; and in a charged state of the electrochemical cell, the positive electrode comprises the lead and antimony in unchanged amounts compared to the discharged state of the electrochemical cell and a loss of atoms of the active alkali metal, wherein the first liquid phase is liquid at a temperature below 500° C.