(JP6215765-A)      Alkaline storage battery comprises a metal oxide anode, a cathode composed of powders of a H-storing alloy or a hydride and contg. at least one of Y and Y cpd. as an additive, a separator and an alkaline electrolyte.    Also claimed is a method for producing an alkaline storage battery where the negative electrode is prepd. by adding at least one of Y and Y cpds. to powders of a H-storing alloy or a hydride, kneading the powders to prepare a paste and coating the paste on a conductive substrate of the negative electrode or filling the conductive substrate with the paste.    Also claimed is a method for producing a battery where the negative electrode is immersed in a soln. contg. a Y salt and is then dried, dipped in aq. alkaline soln., washed with water and dried.    ADVANTAGE -   The charge-discharge cycle characteristics of alkaline storage batteries is improved, without an increase in the prodn. costs.    (EP607806-B1)      Alkaline storage battery comprises a metal oxide anode, a cathode composed of powders of a H-storing alloy or a hydride and contg. at least one of Y and Y cpd. as an additive, a separator and an alkaline electrolyte.    Also claimed is a method for producing an alkaline storage battery where the negative electrode is prepd. by adding at least one of Y and Y cpds. to powders of a H-storing alloy or a hydride, kneading the powders to prepare a paste and coating the paste on a conductive substrate of the negative electrode or filling the conductive substrate with the paste.    Also claimed is a method for producing a battery where the negative electrode is immersed in a soln. contg. a Y salt and is then dried, dipped in aq. alkaline soln., washed with water and dried.    ADVANTAGE -   The charge-discharge cycle characteristics of alkaline storage batteries is improved, without an increase in the prodn. costs.    (JP3010950-B2)      Alkaline storage battery comprises a metal oxide anode, a cathode composed of powders of a H-storing alloy or a hydride and contg. at least one of Y and Y cpd. as an additive, a separator and an alkaline electrolyte.    Also claimed is a method for producing an alkaline storage battery where the negative electrode is prepd. by adding at least one of Y and Y cpds. to powders of a H-storing alloy or a hydride, kneading the powders to prepare a paste and coating the paste on a conductive substrate of the negative electrode or filling the conductive substrate with the paste.    Also claimed is a method for producing a battery where the negative electrode is immersed in a soln. contg. a Y salt and is then dried, dipped in aq. alkaline soln., washed with water and dried.    ADVANTAGE -   The charge-discharge cycle characteristics of alkaline storage batteries is improved, without an increase in the prodn. costs.