| abstract |
A secondary battery according to an embodiment of the present invention comprises: a negative electrode; a positive electrode; and an electrolyte provided between the positive electrode and the negative electrode, wherein the negative electrode comprises a metal layer comprising a metal capable of reversibly intercalating and deintercalating an alkali metal or alkali earth metal ion by alloying and dealloying with an alkali metal or an alkali earth metal, and the electrolyte comprises an ether-based solvent and a metal salt. |