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Nanostructured TiO2 doped with Nb as a novel support for PEMFC

Edgar Valenzuela, Victor Ramos-Sanchez, Alejandro Adolfo Lambert Arista and Oumarou Savadogo

Article (2013)

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Cite this document: Valenzuela, E., Ramos-Sanchez, V., Lambert Arista, A. A. & Savadogo, O. (2013). Nanostructured TiO2 doped with Nb as a novel support for PEMFC. Journal of Materials, 2013, p. 1-6. doi:10.1155/2013/706513
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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.

Open Access document in PolyPublie
Subjects: 2300 Combustibles et technologie de l'énergie > 2303 Autres sources d'énergie (combustibles solaire, éolien, etc.)
3400 Chimie physique > 3401 Électrochimie
Department: Département de génie chimique
Research Center: Autre
Funders: Estancias postdoctorales en el extranjero - Postdoctoral Grant
Date Deposited: 30 Apr 2019 12:18
Last Modified: 08 Apr 2021 10:43
PolyPublie URL: https://publications.polymtl.ca/3640/
Document issued by the official publisher
Journal Title: Journal of Materials (vol. 2013)
Publisher: Hindawi
Official URL: https://doi.org/10.1155/2013/706513


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