ELECTROLYTE FOR SODIUM-METAL RECHARGEABLE BATTERY AND SODIUM-METAL RECHARGEABLE BATTERY INCLUDING THE SAME

摘要

An electrolyte for a sodium metal secondary battery, and a sodium metal secondary battery comprising the same. Specifically, sodium salts; A first solvent consisting of a cyclic carbonate solvent; And a second solvent composed of a linear carbonate solvent, an ether solvent, or a combination thereof, thereby improving ionic conductivity of the electrolyte itself, and reducing a substance having a higher tendency to reduce decomposition than the first solvent and the second solvent. By providing a decomposable additive; an electrolyte for improving the interfacial stability with the sodium metal anode provides an embodiment of the present invention. In addition, a sodium metal secondary battery to which the electrolyte is applied is provided as another embodiment of the present invention.