Publication: A study of the catalyst layer morphology generated by electrospray: effect of the voltage and catalyst ink aging on its performance in a proton electrolyte membrane fuel cell
Authors
Gómez, Modesto A. ; Navarro, Andrés J. ; López-Sicilia, Irene ; Fernández-Romero, Antonio J. ; Santos, Florencio ; Molina-García, Ángel ; Hernández Cifre, José G. ; López-Cascales, José J.
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Elsevier
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Description
© 2024 The Authors. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Published Manuscript version of a Published Work that appeared in final form in International Journal of Hydrogen Energy. To access the final edited and published work see https://doi.org/10.1016/j.ijhydene.2024.10.268
Abstract
Proton electrolyte membrane fuel cells are gaining relevance in different energy sectors as a viable alternative
to the use of fossil fuels. Among others, the automotive industry is one of the sectors that has focused a special
interest on this technology with the aim of reducing its gas emissions. Thus, with the increase in the production
to great scale of proton exchange membrane fuel cells (PEMFC), the amount of catalyst demanded is expected
that increase accordingly. In this context, the optimization of both, the composition of the catalyst ink used,
and the technique employed for the fabrication of the catalyst layers (CL), are two of the main challenges to
be solved in this field.
Electrospray is an optimized technique to prepare catalyst layers (CL) for fuel cells. However, aspects such
as the voltage applied in the electrospray and the aging of the catalyst inks until its use for the catalyst
layer preparation, are some of the key aspects to be studied because they can significantly alter their fuel cell
performance.
Therefore, this work was focused on studying by cyclic voltammetry, how the voltage used in the
electrospray and the ink aging alter the morphology of the catalyst layer and, consequently, their performance
in a fuel cell.
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