Abstract
Titanium anodes coated with a ternary iridium, antimony, and tin oxide mixture (Ti/IrOx-Sb2O5-SnO2) were investigated for oxygen evolution. In the active oxide coating, SnO2serves as a dispersing agent, Sb2O5as a dopant, and IrOxas a catalyst. Experimental results showed that the Ti/IrOx-Sb2O5-SnO2electrode containing only 10 mol % of IrOxnominally in the coating had a service life of 1600 h in 3 M H2SO4solution under a current density of 1 A cm-1at 35°C, compared with 355 h for Ti/IrOxunder the same conditions. Instrumental analysis indicated that the IrOx-Sb2O5-SnO2was a metastable solid solution with a compact structure, which contributes to the superstable nature of the electrode together with the good conductivity and the improvement of bonding with the TiO2interlayer formed during calcination.
Original language | English |
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Pages (from-to) | 4623-4628 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry B |
Volume | 105 |
Issue number | 20 |
DOIs | |
Publication status | Published - 24 May 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry