An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.ijhydene.2012.05.155 (literal)

Alternative label

• Gatto I., Stassi A., Passalacqua E., Aricò A.S. (2013)
  An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures
  in International journal of hydrogen energy
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Gatto I., Stassi A., Passalacqua E., Aricò A.S. (literal)

Pagina inizio

• 675 (literal)

Pagina fine

• 681 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 38 (literal)

Rivista

• International journal of hydrogen energy (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 1 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR) (literal)

Titolo

• An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures (literal)

Abstract

• The oxygen reduction process in polymer electrolyte fuel cells (PEMFCs) was in-situ investigated at intermediate temperatures (80 degrees-130 degrees C) by using a carbon supported PtCo catalyst and Nafion membrane as electrolyte. To overcome the Nafion dehydration above 100 degrees C, the experiments were carried out under pressurized conditions. Electro-kinetic parameters such as reaction order and activation energy were determined from the steady-state galvanostatic polarization curves obtained for the PEM single cell. Negative activation energies of 40 kJ mol(-1) and 18 kJ mol(-1) were observed at 0.9 V and 0.65 V, respectively, in the temperature range 100 degrees-130 degrees C. This was a consequence of ionomer and membrane dry-out. The ionomer dry-out effect appears to depress reaction kinetics as the temperature increases above 100 degrees C since the availability of protons at the catalyst -electrolyte interface is linked to the presence of proper water contents. An oxygen reduction reaction of the first order with respect to the oxygen partial pressure was determined at low current densities. Maximum power densities of 990 mW cm(-2) and 780 mW cm(-2) at 100 degrees C and 110 degrees C (H-2-O-2) with 100% R.H., were achieved at 3 bars abs. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. (literal)

Prodotto di

• Institute for advanced energy technologies \"Nicola Giordano\" (ITAE) (Istituto)

Autore CNR

• ENZA PASSALACQUA (Persona)
• ALESSANDRO STASSI (Persona)
• IRENE GATTO (Persona)
• ANTONINO SALVATORE ARICO' (Unità di personale interno)

Insieme di parole chiave

• Keywords of "An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• IRENE GATTO (Persona)
• ENZA PASSALACQUA (Persona)
• ANTONINO SALVATORE ARICO' (Unità di personale interno)
• ALESSANDRO STASSI (Persona)

Prodotto

• Institute for advanced energy technologies \"Nicola Giordano\" (ITAE) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• International journal of hydrogen energy (Rivista)

Insieme di parole chiave di

• Keywords of "An electro-kinetic study of oxygen reduction in polymer electrolyte fuel cells at intermediate temperatures" (Insieme di parole chiave)