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Journal of Materials
Volume 2013 (2013), Article ID 706513, 6 pages
Research Article

Nanostructured TiO2 Doped with Nb as a Novel Support for PEMFC

1Cuerpo Académico de Sistemas Energéticos, Facultad de Ingeniería UABC Mexicali, Boulevard Benito Juárez y Calle de la Normal s/n, Col. Insurgentes Este, 21280 Mexicali, BCN, Mexico
2Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Numero 1, Nuevo Campus Universitario, 31125 Chihuahua, CHIH, Mexico
3Laboratoire de Nouveaux Matériaux pour l’Électrochimie et l’Énergie, École Polytechnique de Montréal, C.P. 6079, Succuraste Centre-Ville, Montréal, QC, Canada H3C 3A7

Received 17 January 2013; Revised 15 May 2013; Accepted 16 May 2013

Academic Editor: Bengt G. Svensson

Copyright © 2013 Edgar Valenzuela et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nowadays, one of the major issues of the PEMFC concerns the durability. Historically, carbon has been used as a catalyst support in PEMFC; nevertheless, under the environmental conditions of the cell, the carbon is oxidized, leaving the catalyst unsupported. In order to increase the stability and durability of the catalyst in the PEMFC, a novel nanostructured metallic oxide support is proposed. In this work, TiO2 was doped with Nb to obtain a material that combines chemical stability, high surface area, and an adequate electronic conductivity in order to be a successful catalyst support candidate for long-term PEMFC applications. The TiO2-Nb nanostructured catalyst support was physically and electrochemically characterized. According to the results, the TiO2-Nb offers high surface area and good particle dispersion; also, the electrochemical activity and stability of the support were evaluated under high potential conditions, where the TiO2-Nb proved to be much more stable than carbon.