EFFECT OF NAFION DISPERSION ON THE STABILITY OF PT WO3 ELECTRODES/

Authors
CHEN KY TSEUNG ACC
Citation
Ky. Chen et Acc. Tseung, EFFECT OF NAFION DISPERSION ON THE STABILITY OF PT WO3 ELECTRODES/, Journal of the Electrochemical Society, 143(9), 1996, pp. 2703-2707
Citations number
19
Categorie Soggetti
Electrochemistry
Journal title
Journal of the Electrochemical Society → ACNP
ISSN journal
00134651
Volume
143
Issue
9
Year of publication
1996
Pages
2703 - 2707
Database
ISI
SICI code
0013-4651(1996)143:9<2703:EONDOT>2.0.ZU;2-E
Abstract
Coelectrodeposited Pt/WO3 electrodes have very high activity for the o xidation of methanol and formic acid. However, WO3 has a slight solubi lity at 60 degrees C in sulfuric acid media and this significantly red uces its activity and stability. By covering such an electrode with a thin layer of Nafion dispersion, the solubility of WO3 is reduced sign ificantly, electrode performance is stable, and electrode activity is not affected.