NOVELTY - An alkaline storage battery comprises positive (1) and negative (2) electrode plates; a separator (3); and an alkaline electrolyte. The electrode plates contain a metal capable of being leached out into the electrolyte. At least one of surface of separator, and positive and negative electrode plate contains a metal compound that allows a metal leached out into the electrolyte from at least one of the electrode plates to be deposited on surface of separator, and surface or inside of electrode plates.    USE - As alkaline storage battery useful as power source for portable device, electric vehicles, and hybrid electric vehicles.    ADVANTAGE - The alkaline storage battery achieves long-life in which the decline in self discharge characteristics is curbed. The alkaline storage battery can curb the deposition of the metal ion leached out from the positive electrode plate and the negative electrode plate into the separator. As a result, the formation of the conductive path in the separator can be curbed, and self discharge can be excellently curbed. Ions of the leachable metal being dissolved from the positive electrode plate and the negative electrode plate are easily deposited on the negative electrode plate as an oxide. Therefore, deposition of the leachable metal in the separator is curbed, and the formation of the conductive path in the separator can be curbed.    DETAILED DESCRIPTION - An alkaline storage battery comprises a positive electrode plate (1); a negative electrode plate (2); a separator (3) interposed between the positive and negative electrode plates; and an alkaline electrolyte. The positive and negative electrode plates contain a metal capable of being leached out into the alkaline electrolyte. At least one of a surface of the separator, positive electrode plate, and negative electrode plate contains a metal compound. The metal compound allows a metal leached out into the alkaline electrolyte from at least one of the positive and negative electrode plate to be deposited on surface of the separator, a surface or inside of positive electrode plate, or a surface or inside of the negative electrode plate. The metal compound is carried on at least one of the surface of positive electrode plate and surface of negative electrode plate. The positive electrode plate includes a positive electrode material mixture containing the metal compound along with a positive electrode active material and a binder. The negative electrode plate includes a negative electrode material mixture containing metal compound along with a negative electrode active material and a binder.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of the alkaline storage battery.    Positive electrode plate (1)    Negative electrode plate (2)    Separator (3)    Battery case (4)    End portion of negative electrode (7)    Gasket. (8)