An alkaline zinc secondary battery in accordance with the present invention comprises a separator layer comprising a gel electrolyte comprising a water absorbent polymer and an alkaline aqueous solution, disposed between a negative electrode comprising at least one selected from the group consisting of zinc and zinc oxide and a positive electrode. Because the separator layer is in a gel form, transfer of zinc ions is limited. Thereby, deformation of the negative electrode and generation of dendrite due to charge and discharge of the battery are substantially inhibited. Moreover, since impurity ions such as nitrate ions become less prone to move, self-discharge of the battery is also inhibited.