Preparation and electrochemical properties of a novel porous Ti/Sn-Sb-RuO /β-PbO/MnO anode for zinc electrowinning.

MnO coatings prepared in a sulfate system (S-MnO) and MnO prepared in a nitrate system (N-MnO) were successfully deposited on porous Ti/Sn-Sb-RuO /β-PbO substrates by electrodeposition, and their electrochemical properties were studied in detail. The bath composition plays a very important role in the MnO coating prepared by electrodeposition at a low current density. The results of scanning electron microscopy show that a Ti/Sn-Sb-RuO /β-PbO/MnO electrode has a rough morphology and the unit cell is very good.