LEAD STORAGE BATTERY

摘要

A lead storage battery that inhibits the corrosion of current collector even in high-temperature environment to thereby attain a prolonged service life. A lead battery (20) has a group of electrode plates (4) housed in a battery case (5). The group of electrode plates (4) consists of negative electrode plates (1) and positive electrode plates (2) superimposed one upon another with separators (3) interposed therebetween. Each of the negative electrode plates (1) and positive electrode plates (2) has a current collector having an active substance held thereon. The current collectors of negative electrode plates (1) each have a cast rolled sheet obtained by casting and rolling of a lead alloy. The current collectors of positive electrode plates (2) each have a powder-rolled sheet obtained by spraying a lead alloy in molten form into a dry air so as to effect rapid cooling solidification and rolling the resultant atomized particles so as to effect solidification integration. A lead oxide in film form is provided on the surface of the atomized particles. The lead oxide is broken down and dispersed at the rolling into nano-order particles and films and fixed at the boundaries of atomized particles. Minute lead oxide inhibits any crystal growth.