NOVELTY - The nickel-hydrogen storage battery provides spiral-form electrode group (4) with alkali electrolyte liquid in the container. The cathode plate (8) contains polymeric binder and anode plate (6) contains nickel hydroxide. The polyolefin nonwoven fabric separators are arranged between anode plate and cathode plate. The hydrophilization treatment of nonwoven fabric is performed by fluorine-gas, plasma and/or surfactant processes, and sulfonation, plasma and/or surfactant processes is performed to other side of nonwoven fabric.    USE - As power supply for hybrid vehicle and electric vehicle.    ADVANTAGE - The nickel-hydrogen storage battery has compact separator, high-output, improved productivity and uniform cell reaction, and excellent hydrophilicity, liquid-absorabability and battery characteristics. The generation of internal short is prevented by applying high strength separator. The separator-drying time and plasma processing time is reduced.    DETAILED DESCRIPTION - The nickel-hydrogen storage battery provides spiral-form electrode group accommodated with alkali electrolyte liquid in the container. The cathode plate contains non water-soluble polymeric binder which binds hydrogen absorbing alloy particles, and has effective-surface product per unit capacitance of more than 70 cm2/Ah. The anode plate is wound by spiral form with cathode plate, and contains nickel hydroxide as anode active material. The primary separator (10a) containing nonwoven fabric of polyolefin fiber is arranged between outer surface of anode plate and inner surface of cathode plate. The secondary separator (10b) containing nonwoven fabric of polyolefin fiber is arranged between inner surface of anode plate and outer surface of cathode plate. The hydrophilization treatment of the nonwoven fabric is carried out by fluorine-gas process, plasma process and/or surfactant process, and sulfonated process, plasma process and/or surfactant process is carried out to other side of the nonwoven fabric. The secondary separator contains absorbed-liquid of aqueous solution of potassium hydroxide.    DESCRIPTION OF DRAWING(S) - The figure shows the sectional drawing of the nickel-hydrogen storage battery.    Armored can (2)    Electrode group (4)    Anode plate (6)    Cathode plate (8)    Primary separator (10a)    Secondary separator (10b)