![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
A new group of anodic materials and lead–silver alloys, produced in various ways, used as anodes for zinc electrowinning have been investigated. The new anodic materials are composite coatings, deposited on lead–calcium rolled substrates, consisting of a lead matrix and a cobalt–titanium phase. The cobalt and titanium are present in the lead matrix as CoTiO3 nanoparticles. The behaviour of lead–cobalt–titanium anodes during zinc electrowinning was studied by means of galvanostatic polarisation investigations. The processes, occurring on the anodes during zinc electrowinning, have been studied by cyclic voltammetry. The surface morphology of the composite electrodes was investigated by scanning electron microscopy. It has been established that the anodic potentials of the composite electrodes investigated are negligibly higher than those of the classical lead–silver alloy. It has been shown by cyclic voltammetry that the curves of the new electrodes possess the same characteristic peaks as those of pure lead electrode.