NOVELTY - The alkaline secondary battery useful as a large current power source for an electric automobile, an electric motorcycle, an electric bicycle and an electric tool, comprises an electrode assembly (10) having a positive electrode (11), a negative electrode (12) and a separator, and an electrolytic solution held in the electrode assembly. The separator contains aromatic polyamide fiber, and fiber having higher property of holding the electrolytic solution than that of the aromatic polyamide fiber. The positive and negative electrodes face each other via the separator sandwiched between them.    USE - The alkaline secondary battery is useful as a large current power source for an electric automobile, an electric motorcycle, an electric bicycle and an electric tool.    ADVANTAGE - The alkaline secondary battery is capable of suppressing occurrence of short-circuit even if the thickness of the separator is reduced, provides high output and high energy density, and maintains the internal pressure low at the time of charging.    DETAILED DESCRIPTION - The alkaline secondary battery useful as a large current power source for an electric automobile, an electric motorcycle, an electric bicycle and an electric tool, comprises an electrode assembly (10) having a positive electrode (11), a negative electrode (12) and a separator, and an electrolytic solution held in the electrode assembly. The separator contains aromatic polyamide fiber, and fiber having higher property of holding the electrolytic solution than that of the aromatic polyamide fiber. The positive and negative electrodes face each other via the separator sandwiched between them. The separator comprises a first layer containing higher-liquid-holding fiber as a main component, and a second layer containing aromatic polyamide fiber at a density higher than that in the first layer. The first and second layers are exposed as first and second main surfaces of the separator respectively. In the electrode assembly, the separator is disposed so that the second main surface faces toward the negative electrode. The separator has a dual-layer structure composed of the first and second layers laminated in a thickness direction of the separator.    DESCRIPTION OF DRAWING(S) - The diagram shows an oblique view of the construction of an alkaline secondary battery.    Electrode assembly (10)    Positive electrode (11)    Negative electrode (12)    External can (20)    Closure cap. (30)