Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells
IrO2/Pt catalysts (at different concentrations) were synthesized by incipient wetness technique and characterized by XRD, XRF, and SEM. Water electrolysis/fuel cell performances were evaluated in a 5 cm2 single cell under Unitized Regenerative Fuel Cell (URFC) configuration. The IrO2/Pt composition...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.4061/2011/276205 |
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| author | V. Baglio C. D'Urso A. Di Blasi R. Ornelas L. G. Arriaga V. Antonucci A. S. Aricò |
| author_facet | V. Baglio C. D'Urso A. Di Blasi R. Ornelas L. G. Arriaga V. Antonucci A. S. Aricò |
| author_sort | V. Baglio |
| collection | DOAJ |
| description | IrO2/Pt catalysts (at different concentrations) were synthesized by incipient wetness technique and characterized by XRD, XRF, and SEM. Water electrolysis/fuel cell performances were evaluated in a 5 cm2 single cell under Unitized Regenerative Fuel Cell (URFC) configuration. The IrO2/Pt composition of 14/86 showed the highest performance for water electrolysis and the lowest one as fuel cell. It is derived that for fuel cell operation an excess of Pt favours the oxygen reduction process whereas IrO2 promotes oxygen evolution. From the present results, it appears that the diffusion characteristics and the reaction rate in fuel cell mode are significantly lower than in the electrolyser mode. This requires the enhancement of the gas diffusion properties of the electrodes and the catalytic properties for cathode operation in fuel cells. |
| format | Article |
| id | doaj-art-a32ac105c099484fabc336223f6de5b9 |
| institution | Kabale University |
| issn | 2090-3537 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-a32ac105c099484fabc336223f6de5b92025-02-03T01:09:08ZengWileyInternational Journal of Electrochemistry2090-35372011-01-01201110.4061/2011/276205276205Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel CellsV. Baglio0C. D'Urso1A. Di Blasi2R. Ornelas3L. G. Arriaga4V. Antonucci5A. S. Aricò6CNR-Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE), Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE), Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE), Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyTozzi Apparecchiature Elettriche S.p.A., Via Zuccherificio, 10-48010 Mezzano, ItalyCentro de Investigacióny Desarrollo Tecnológico en Electroquímica S.C., 76700 Querétaro Sanfandila, QRO, MexicoCNR-Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE), Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE), Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyIrO2/Pt catalysts (at different concentrations) were synthesized by incipient wetness technique and characterized by XRD, XRF, and SEM. Water electrolysis/fuel cell performances were evaluated in a 5 cm2 single cell under Unitized Regenerative Fuel Cell (URFC) configuration. The IrO2/Pt composition of 14/86 showed the highest performance for water electrolysis and the lowest one as fuel cell. It is derived that for fuel cell operation an excess of Pt favours the oxygen reduction process whereas IrO2 promotes oxygen evolution. From the present results, it appears that the diffusion characteristics and the reaction rate in fuel cell mode are significantly lower than in the electrolyser mode. This requires the enhancement of the gas diffusion properties of the electrodes and the catalytic properties for cathode operation in fuel cells.http://dx.doi.org/10.4061/2011/276205 |
| spellingShingle | V. Baglio C. D'Urso A. Di Blasi R. Ornelas L. G. Arriaga V. Antonucci A. S. Aricò Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells International Journal of Electrochemistry |
| title | Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells |
| title_full | Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells |
| title_fullStr | Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells |
| title_full_unstemmed | Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells |
| title_short | Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells |
| title_sort | investigation of iro2 pt electrocatalysts in unitized regenerative fuel cells |
| url | http://dx.doi.org/10.4061/2011/276205 |
| work_keys_str_mv | AT vbaglio investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT cdurso investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT adiblasi investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT rornelas investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT lgarriaga investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT vantonucci investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells AT asarico investigationofiro2ptelectrocatalystsinunitizedregenerativefuelcells |