Insoluble anodes for producing manganese dioxide consisting essentially of a titanium-nickel alloy

摘要

There is provided an insoluble anode for producing manganese dioxide by electrolysis characterized in that the surface layer or the entire anode is made of a titanium alloy of from 0.5 to less than 15 percent by weight of nickel, the remainder being titanium and unavoidable impurities. The titanium alloy preferably has thereon Ti.sub.2 Ni particles 300 &mgr; m or finer in size dispersed uniformly at the rate of at least 10,000 particles per square millimeter of the anode surface area, whereby the growth of a passive state film is prevented.