Patent ID: 7909068
Filing Date: 2011-03-22
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method for producing a positive electrode plate for an alkaline storage battery comprising the steps of: controlling the thickness of an original material made of a porous metal having a weight per unit area of 150 to 350 g/m filling a material mixture paste comprising an active material, an elastic polymer, xanthan gum and carboxymethyl cellulose into said substrate in a stripe pattern to form at least two filled portions and at least one unfilled portion; drying said substrate filled with the material mixture paste; rolling said dried substrate filled with the material mixture paste to form an electrode plate; and cutting said electrode plate into a predetermined size, wherein said step of filling the material mixture past into the substrate comprises the steps of: placing a plurality of die nozzles facing towards each other with a gap having a predetermined width therebetween, allowing said substrate to pass through said gap in a longitudinal direction, and spraying said material mixture paste onto said passing substrate from slit-shaped outlets of said plurality of die nozzles, said slit-shaped outlet being divided into a plurality of sections by at least one partition, or said die nozzle comprising a combination of a plurality of units, each unit having a slit-shaped outlet for spraying said material mixture paste, said plurality of units being arranged such that their slit-shaped outlets are aligned in a line.