ANODE SUR SUPPORT DE PLOMB A PARTICULES REGULATRICES DE CATALYSE PARTIELLEMENT INCORPOREES

ABSTRACT An anode with a base of lead or lead alloy isprovided with catalytic particles of titanium which comprisea very small amount of platinum group metal or an oxide thereof. These catalytic particles are partly embedded,anchored and electrically connected to the base, so that oxygen isevolved on these particles at a reduced potential at which theunderlying lead or lead alloy of the base remains electrochemi-cally inactive, and the anode base thereby serves only as astable conductive support to the catalytic particles. Operation of this anode at a reduced potential providesenergy savings. It may be used more particularly in cells forelectrowinning metals with a higher degree of purity at areduced energy cost with respect to conventional cells equippedwith anodes consisting of lead or a lead alloy.