Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC)
Highly selective Pd electrocatalysts were synthesized by the formic acid (FA) method and evaluated as cathodes for DEGFC applications. In rotating disc measurements in acid medium, the Pd/C cathode showed important catalytic activity for the Oxygen Reduction Reaction (ORR). In the presence of ethyle...
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| Format: | Article |
| Language: | English |
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MDPI AG
2009-10-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/2/4/944/ |
| _version_ | 1811184794128613376 |
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| author | Oumarou Savadogo F. Javier Rodríguez Varela Sergio Fraire Luna |
| author_facet | Oumarou Savadogo F. Javier Rodríguez Varela Sergio Fraire Luna |
| author_sort | Oumarou Savadogo |
| collection | DOAJ |
| description | Highly selective Pd electrocatalysts were synthesized by the formic acid (FA) method and evaluated as cathodes for DEGFC applications. In rotating disc measurements in acid medium, the Pd/C cathode showed important catalytic activity for the Oxygen Reduction Reaction (ORR). In the presence of ethylene glycol (EG, C2H6O2), Pd/C exhibited a noteworthy electrochemical behavior and full tolerance to the organic molecule. No current density peaks associated to the EG oxidation reaction emerged and the shift in onset potential for the ORR (Eonset) toward more negative potentials was negligible on this cathode. As a comparison, commercial Pt/C was tested under the same conditions showing a poor selectivity for the ORR when EG was present. The detrimental effect of EG on the Pt electrocatalysts resulted in high intensity current density peaks due to the oxidation of EG and a significant shift in Eonset. The evaluation of Pd/C in a DEGFC operating at 80 °C demonstrated its good performance as cathode material. Given these results, it is expected that highly efficient Pd-based cathodes can find application in DEGFCs. |
| first_indexed | 2024-04-11T13:18:30Z |
| format | Article |
| id | doaj.art-c623987f7ba643d3bd48c6b0b4d20beb |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:18:30Z |
| publishDate | 2009-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c623987f7ba643d3bd48c6b0b4d20beb2022-12-22T04:22:19ZengMDPI AGEnergies1996-10732009-10-012494495610.3390/en20400944Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC)Oumarou SavadogoF. Javier Rodríguez VarelaSergio Fraire LunaHighly selective Pd electrocatalysts were synthesized by the formic acid (FA) method and evaluated as cathodes for DEGFC applications. In rotating disc measurements in acid medium, the Pd/C cathode showed important catalytic activity for the Oxygen Reduction Reaction (ORR). In the presence of ethylene glycol (EG, C2H6O2), Pd/C exhibited a noteworthy electrochemical behavior and full tolerance to the organic molecule. No current density peaks associated to the EG oxidation reaction emerged and the shift in onset potential for the ORR (Eonset) toward more negative potentials was negligible on this cathode. As a comparison, commercial Pt/C was tested under the same conditions showing a poor selectivity for the ORR when EG was present. The detrimental effect of EG on the Pt electrocatalysts resulted in high intensity current density peaks due to the oxidation of EG and a significant shift in Eonset. The evaluation of Pd/C in a DEGFC operating at 80 °C demonstrated its good performance as cathode material. Given these results, it is expected that highly efficient Pd-based cathodes can find application in DEGFCs.http://www.mdpi.com/1996-1073/2/4/944/Pd-based cathodesoxygen reduction reactiontolerance to organic moleculesethylene glycol as fueldirect ethylene glycol fuel cells |
| spellingShingle | Oumarou Savadogo F. Javier Rodríguez Varela Sergio Fraire Luna Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) Energies Pd-based cathodes oxygen reduction reaction tolerance to organic molecules ethylene glycol as fuel direct ethylene glycol fuel cells |
| title | Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) |
| title_full | Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) |
| title_fullStr | Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) |
| title_full_unstemmed | Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) |
| title_short | Synthesis and Evaluation of Highly Tolerant Pd Electrocatalysts as Cathodes in Direct Ethylene Glycol Fuel Cells (DEGFC) |
| title_sort | synthesis and evaluation of highly tolerant pd electrocatalysts as cathodes in direct ethylene glycol fuel cells degfc |
| topic | Pd-based cathodes oxygen reduction reaction tolerance to organic molecules ethylene glycol as fuel direct ethylene glycol fuel cells |
| url | http://www.mdpi.com/1996-1073/2/4/944/ |
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