Sodium Secondary Battery

摘要

Provided is a sodium secondary battery capable of operating at a low temperature. More particularly, the sodium secondary battery according to the present invention includes: an anode containing sodium; a cathode containing a transition metal and an alkali metal halide; and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in a molten salt electrolyte containing a sodium.metal halogen salt including at least two kinds of halogens.

主权项

1. A sodium secondary battery comprising:
an anode containing sodium; a cathode containing a transition metal and an alkali metal halide; and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in a molten salt electrolyte represented by the following Chemical Formula 1.
NaM(X1)n(X2)4−n  Chemical Formula 1 In Chemical Formula 1, M is an element selected from metal and metalloid groups having an oxidation number of 3; X1 and X2 are each independently selected from halogen elements; and n is more than 0 but less than 4 (0