A power storage device includes: a positive electrode that contains manganese dioxide; a negative electrode that contains zinc; a positive electrolyte in contact with the positive electrode; a negative electrolyte in contact with the negative electrode; an...

In an alkaline battery in which a positive electrode 2 made of manganese dioxide and a negative electrode 3 are contained in a cylindrical battery case 1 having a closed bottom with a separator 4 interposed between the positive and negative electrodes 2 an...