Cyclic and linear voltammetry on Ti/IrO2-Ta2O5-MnOx electrodes in sulfuricacid containing Mn2+ ions

Authors
Nijjer, S Thonstad, J Haarberg, GM
Citation
S. Nijjer et al., Cyclic and linear voltammetry on Ti/IrO2-Ta2O5-MnOx electrodes in sulfuricacid containing Mn2+ ions, ELECTR ACT, 46(23), 2001, pp. 3503-3508
Citations number
19
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
00134686 → ACNP
Volume
46
Issue
23
Year of publication
2001
Pages
3503 - 3508
Database
ISI
SICI code
0013-4686(20010810)46:23<3503:CALVOT>2.0.ZU;2-W
Abstract
The anodic current density for oxygen evolution was studied on Ti/IrO2-Ta2O 5 electrodes where some of the Ta2O5 was replaced by MnOx (x less than or e qual to 2) in sulfuric acid and in sulfuric acid containing Mn2+ ions. Depo sition of MnO2 on the anode surface reduced the anodic current density for oxygen evolution for all coatings. Scanning electron microscopy images of t he Ti/IrO2-Ta2O5 electrode during voltammetric experiments showed that the MnO2 deposit was reduced completely during the cathodic scan. (C) 2001 Else vier Science Ltd. All rights reserved.