PREPARATION OF BATTERY CELL CURRENT COLLECTORS

摘要

At least portions of steel battery casings or other current collectors in contact with a manganese dioxide layer in a zinc-manganese dioxide alkaline cell present to that layer surfaces which have been burnished in the presence of particles of a passivity inducing metal such as nickel. Typically, the particles are transferred from a plating layer on a surface of low carbon steel forming the casing by a machining operation which cuts into the surface to increase its surface area whilst burnishing the cut surfaces.