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Synthesis and characterization of Nb-TiO2 mesoporous microsphere and nanofiber supported Pt catalysts for high temperature PEM fuel cells

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1016/j.electacta.2012.04.028
AuteurRechercher : 1; Rechercher : ; Rechercher : 1; Rechercher : ; Rechercher : 1; Rechercher : ; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Énergie, les mines et l'environnement
FormatTexte, Article
SujetNiobium doped titanium oxide; Mesoporous microsphere; Nanofiber; Catalyst support; Fuel cells oxygen reduction reaction
Résumé
Two differently structured Nb-doped TiO2 support materials, i.e., mesoporous microspheres and nanofibers, were synthesized and used as Pt catalyst supports for the oxygen reduction reaction (ORR), which is a critical research topic for PEM fuel cells. Compared to a commercially available Pt/C catalyst, improved electrochemical ORR stability was observed when using the novel supports in an acidic environment. XRD, SEM, TEM, and BET were used to characterize the morphologies of these supports and the attached Pt catalyst. Electrochemical methods were used to measure both the ORR mass activity and stability of these materials. Improvement in both the specific area and conductivity were identified as the area for further development.
Date de publication
Dans
  • Electrochimica Acta 77 (août 2012) : 1–7.
Langueanglais
Publications évaluées par des pairsOui
IdentificateurS0013468612005634
Numéro NPARC21268733
Exporter la noticeExporter en format RIS
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Identificateur de l’enregistrement5be44366-8055-434e-a3fa-28a722ba614c
Enregistrement créé2013-11-08
Enregistrement modifié2020-04-21
Date de modification :