Method for manufacturing positive electrode for alkaline storage battery

摘要

A method for manufacturing a positive electrode for an alkaline storage battery that achieves excellent filling characteristics for an active material for the positive electrode and longer lifetime of the battery is provided. The method includes a first process of filling a paste of the active material for the positive electrode in a first porous metal sheet 30 provided with a plurality of oblate pores 30a whose major axes are arranged substantially in one direction, and a second process of pressing the first porous metal sheet 30 that has undergone the first process using a roller press such that the one direction and a direction of a rotation axis 31a of a roller 31 in the roller press substantially are parallel, so as to produce a positive electrode sheet 40 provided with a second porous metal sheet. In the second porous metal sheet, a value obtained by dividing a length of the pores in the one direction by that of the pores in a direction perpendicular to the one direction and parallel to a surface of the second porous metal sheet averages in the range of 0.9 to 1.1.