An alkaline secondary battery with an improved positive nickel electrode and procedure for its activation

Alkaline secondary battery having an improved positive nickel electrode, and its activation process, of the Ni/MH, Ni/Cd, Ni/Zn or Ni/Fe type, comprising an improved positive nickel pasted electrode, a negative electrode, an alkaline electrode, a separator and a plastic or metallic container. The positive electrode comprises a high tap density irregular shaped nickel hudroxide as active material and having hammered irregularities in its crystalline structure which is doped with Co and Zn in a range of 0.5 and 5 % in both cases, a three-dimensional metallic structure as conductive substrate of the foam or nickel fiber, and which has a porosity of 90 to 96%, preferably between 94 and 96%, as well as additives to improve the rhoelogical characteristics and electric conductivity of the electrode in a range of 7 to 40%.