Method for manufacturing core material for electrode plate and method for manufacturing alkali storage battery

摘要

A plate core material is manufactured by a method including the processes of soaking a core material ( 11 ) that is made of nickel or nickel-plated steel and includes copper as an impurity in an aqueous solution ( 12 ) containing ammonium ions and hydrogen peroxide, so that the copper is dissolved in the aqueous solution ( 12 ), and removing the aqueous solution ( 12 ) from the surface of the core material ( 11 ). Further, an alkaline storage battery is manufactured by a method including this manufacturing method. According to the manufacturing method of the present invention, an alkaline storage battery having higher reliability than that of a conventional alkaline storage battery can be obtained.