JPS5590076A - Manufacturing method of alkaline cell - Google Patents

Abstract

PURPOSE: To reduce internal resistance by laying a separating membrane on the upper surface of positive electrode and loading a electrolyte retention layer on the upper surface of the membrane and pouring water which contains alcohol onto the electrolyte retention layer and removing gas foam in the inner part of the retention layer.

CONSTITUTION: In a metal can 1, a positive electrode 2 is arranged which is formed by molding under pressure the mixed-agent consisting of the mixture of silver oxide powder and carbon powder, and on the positive electrode 2, the separating membrane 5 is layed which is prepared by pasting micro-porous polypropylene film 3 as positive electrode and cellophane film 4 as negative electrode. On the separating membrane 5, an electrolyte retaining layer 6 is layed which consists of fibers such as regenerated viscose rayon and cotton. Onto the electrolyte retaining layer 6, water 10 which contains ethyl alcohol in 2% by weight is poured from the nozzle 9 of a liquid injector, and the retention layer is damped. Then, the metal cap 12 in which negative electrode active substance 11 in gel form such as zinc powder is filled is inserted onto the metal can 1, and the opening part 13 of the metal can 1 is bent and sealed.

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