Preparation and properties of Ti/SnO2-Sb2O5 electrodes by electrodeposition

Sb and Sri coatings were deposited on Ti substrate by the method of cathode deposition, and the Ti/SnO2-Sb2O5 electrodes were obtained by annealing at different temperatures for 3 h. Ti/SnO2-Sb2O5 coating was characterized using technique such as X-ray diffraction (XRD), and scanning electron microscopy (SEM). Ti/SnO2-Sb2O5 electrode calcined at 550 degrees C exhibits the best catalytic capacity. Ti/SnO2-Sb2O5 electrode obtained by electrodeposition had longer service life and faster degradation capacity compared with that obtained by dip-coating. Accelerated service life tests were carried out in 0.5 mol L-1 HSO4 solution with the current density of 100 mA cm(-2). Service life of Ti/SnO2-Sb2O5 electrode prepared in present study was 15 h, and it was only 0.14 h for Ti/SnO2-Sb2O5 electrode obtained by dip-coating. (c) 2007 Elsevier B.V All rights reserved.