Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7727860 | Journal of Power Sources | 2016 | 7 Pages |
Abstract
Cyclic voltammetry measurements at the anode have been carried out and reveal the presence of carbon monoxide in steady-state operation, with pure hydrogen. Experiments have been performed both in single cell and in stack to find out its origin. The contamination of the anode catalyst is partly due the reverse-water gas shift (RWGS) with carbon dioxide from the cathode. However, this study shows a temperature-activated and time-related corrosion mechanism which appears under humidified hydrogen. Due to this degradation mechanism, a reversible 25Â mV-loss of performances is observed and can be recovered by oxidizing carbon monoxide on the anode.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
B. Decoopman, R. Vincent, S. Rosini, G. Paganelli, P.-X. Thivel,