| abstract |
It includes a positive electrode current collector, a positive electrode active material layer provided on the surface of the positive electrode current collector, and a first coating film having lithium ion permeability. The first coating contains a lithium ion-permeable oxide X represented by Li x M 1 O y (0.5 ≦ x <4, 1 ≦ y <6) and a fluorine-containing compound Y. It covers at least a part of the surface of the positive electrode active material layer and partially covers the surface of the positive electrode current collector. Compound Y contains a bond between the metal element M 2 and a fluorine element, and M 1 is at least one selected from the group consisting of B, Al, Si, P, S, Ti, V, Zr, Nb, Ta, and La. A species, M 2 is at least one selected from the group consisting of Li, Na, Al, Mg, and Ca. |