Tungsten potentiodynamic behaviour in sulfuric acid solutions

The behaviour of a tungsten electrode to cyclic voltametry as a perturbation technique was studied. Tests were carried out in 1M H2SO4 (25.0 + - 0.2)0C and using a three electrode conventional cell. The electrode potential was measured in relation to a saturated calomel electrode connected to a Luggin capillary. The working electrode consisted of a tungsten wire, of spectroscopic purity, having 0.6 cm2 geometric area and a platinum counter-electrode. Considerations about the conditions and feasibility of using such an electrode for electrochemical and electrocatalytic studied are made. (C.L.B.)