Anodic oxidation of formic acid on electrodeposited Pt/WO{sub 3} electrode at room temperature
- Univ. of Essex, Colchester (United Kingdom)
Work by Tseung et al. has shown that electrodeposited Pt/WO{sub 3} is very active for the oxidation of methanol in sulfuric acid solution. Formic acid, one of the by-products of methanol oxidation, is oxidized via dual-path mechanism leading either to a reactive intermediate COOH{sub ad} or to a poisoning species CO{sub ad} or COH{sub ad}. 5M formic acid was anodically oxidized on a Pt/WO{sub 3} electrode at 50 mA/cm{sup 2} over a test period of 175 h at 0.34 V vs. NHE at 20 C without any poisoning effects. On a platinized electrode, at a fixed current density of 43.8 mA/cm{sup 2}, the potential was 0.43 V. The potential of the platinized electrode started to oscillate after a test period of 30 h and eventually shifted to the oxygen evolution potential.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 64780
- Journal Information:
- Journal of the Electrochemical Society, Vol. 142, Issue 4; Other Information: PBD: Apr 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stabilizing CuPd Nanoparticles via CuPd Coupling to WO2.72 Nanorods in Electrochemical Oxidation of Formic Acid
Pd Nanoparticles Coupled to WO2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid