INSOLUBLE ANODE MADE OF LEAD ALLOY

PURPOSE:To develop the title insoluble electrode having excellent durability even when used at high current density, by using a Pb-Tl-Sn alloy having a specified composition as the insoluble anode to be used in a sulfuric acid electrolyte. CONSTITUTION:The rolled material of a Pb-Tl-Sn alloy contg. <=6-12wt% Tl, <=0.01-10wt% Sn, and the balance Pb, a clad material with the metals such as Fe and Cu as the core and coated with Ti, Nb, and Ta having excellent corrosion resistance, or a material obtained by coating the surface of a base material consisting of a single corrosion-resistant metallic material with the Pb-Tl-Sn alloy are used as the insoluble anode to be used in the sulfuric acid plating soln. and electrolyte in the electroplating of Zn, etc., or the production of electrolytic copper foil. An insoluble anode having excellent durability even when used at the high current density of 100-200A/dm<2> in electroplating and at >=50A/dm<2> in the production of copper foil is obtained.