High temperature molten salt thermal cell

Abstract

A high temperature molten salt thermal cell is provided including an alkalietal containing anode, a molten lithium halide electrolyte and at least one binary sulfide of chromium as the cathode.

What is claimed is: 
     
       1. A high temperature molten salt thermal cell including an alkali metal containing anode, a molten alkali metal halide electrolyte and at least one binary sulfide of chromium as the cathode. 
     
     
       2. A high temperature molten salt thermal cell according to claim 1 wherein the alkali metal containing anode is at least one member of the group consisting of lithium, lithium-aluminum alloys, lithium-silicon alloys, lithium-boron alloys, sodium, sodium-alloys, potassium, calcium, and magnesium. 
     
     
       3. A high temperature molten salt thermal cell according to claim 1, wherein the binary sulfide of chromium is at least one member of the group consisting of Cr 2  S 3 , Cr 3  S 4  and CrS. 
     
     
       4. A high temperature molten salt thermal cell according to claim 1 wherein the molten alkali halide electrolyte is at least one member of the group consisting of LiAlCl 4 , NaAlCl 4 , LiCl, LiF, LiBr, NaCl, NaF, NaBr, KCl, KF, and KBr. 
     
     
       5. A high temperature molten salt thermal cell according to claim 3 wherein the molten alkali metal halide electrolyte is a eutectic mixture of about 47 mole percent lithium bromide, about 31 mole percent lithium chloride, and about 22 mole percent lithium fluoride. 
     
     
       6. A high temperature molten salt thermal cell according to claim 3 wherein the molten alkali metal halide electrolyte is a eutectic mixture of about 59 mole percent lithium chloride and about 41 percent potassium chloride. 
     
     
       7. A high temperature molten salt thermal cell including a lithium aluminum alloy of about 48 atomic percent of lithium as the anode, a lithium halide eutectic mixture of about 31 mole percent lithium chloride, about 47 mole percent lithium bromide, and about 22 mole percent lithium fluoride as the electrolyte, and chromium sesquisulfide as the cathode.