Publicación: Feasibility of ultra-low Pt loading electrodes for high temperature proton exchange membrane fuel cells based in phosphoric acid-doped membrane
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2019
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info:eu-repo/semantics/openAccess
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Resumen
Factors as the Pt/C ratio of the catalyst, the binder content of the electrode and the catalyst deposition method were studied within the scope of ultra-low Pt loading electrodes for high temperature proton exchange membrane fuel cells (HT-PEMFCs). The Pt/C ratio of the catalyst allowed to tune the thickness of the catalytic layer and so to minimize the detrimental effect of the phosphoric acid flooding. A membrane electrode assembly (MEA) with 0.05 mgPtcm−2 at anode and 0.1 mgPtcm−2 at cathode (0.150 mgPtcm−2 in total) attained a peak power density of 346 mW cm−2. It was proven that including a binder in the catalytic layer of ultra-low Pt loading electrodes lowers its performance. Electrospraying-based MEAs with ultra-low Pt loaded electrodes (0.1 mgPtcm−2) rendered the best (peak power density of 400 mW cm−2) compared to conventional methods (spraying or ultrasonic spraying) but with the penalty of a low catalyst deposition rate.
Descripción
The registered version of this article, first published in “International Journal of Hydrogen Energy, vol 44", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.ijhydene.2019.09.073
La versión registrada de este artículo, publicado por primera vez en “International Journal of Hydrogen Energy, vol 44", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.ijhydene.2019.09.073
Categorías UNESCO
Palabras clave
Ultra-low Pt loading;, HT-PEMFC;, PBI;, Ultrasonic-spraying;, Electrospraying
Citación
S. Martin, J.O. Jensen, Q. Li, P.L. Garcia-Ybarra, J.L. Castillo, Feasibility of ultra-low Pt loading electrodes for high temperature proton exchange membrane fuel cells based in phosphoric acid-doped membrane, International Journal of Hydrogen Energy, Volume 44, Issue 52, 2019, Pages 28273-28282, ISSN 0360-3199, https://doi.org/10.1016/j.ijhydene.2019.09.073.
Centro
Facultades y escuelas::Facultad de Ciencias
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