Electrode, secondary battery, and battery pack

Abstract

In general, according to one embodiment, an electrode includes an electrode layer and a film containing F, S, and N. The electrode layer includes at least one of a Li metal or a Li alloy. The film covers at least a part of a surface of the electrode layer. The electrode satisfies the following formula (1): 1.5 ≤ I 1 / I 2 ( 1 ) where I1 is an intensity of a first peak that appears in a range of 686 eV or more and 690 eV or less of an F1s spectrum obtained by X-ray photoelectron spectroscopy, and I2 is an intensity of a second peak that appears in a range of 683 eV or more and 685 eV or less of the F1s spectrum.

Dependencies are inferred from the claim text.