The influence of carbon dioxide on PEM fuel cell anodes
| Autor: | F.A. de Bruijn, Gerard J. M. Janssen, E.F. Sitters, Dimitrios Papageorgopoulos |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Hydrogen
Renewable Energy Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Proton exchange membrane fuel cell Direct-ethanol fuel cell Electrochemistry Hydrogen purifier Water-gas shift reaction chemistry Electrical and Electronic Engineering Physical and Theoretical Chemistry Cyclic voltammetry Platinum |
| Zdroj: | Journal of Power Sources. 110:117-124 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(02)00227-6 |
| Popis: | The influence of CO2 on the performance of PEM fuel cells was investigated by means of fuel cell experiments and cyclic voltammetry. Depending on the composition and microstructure of the fuel cell anode, the effect varies from small to significant. Adsorbed hydrogen plays a dominant role in the formation of CO-like species via the reverse water–gas shift reaction. Platinum sites which are not utilized in the electrochemical oxidation of hydrogen are thought to catalyze this reverse-shift reaction. Alloying with ruthenium suppresses the reverse-shift reaction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect