P
Patrick Bertrand
Researcher at Université catholique de Louvain
Publications - 278
Citations - 9826
Patrick Bertrand is an academic researcher from Université catholique de Louvain. The author has contributed to research in topics: Secondary ion mass spectrometry & Ion. The author has an hindex of 46, co-authored 278 publications receiving 9432 citations. Previous affiliations of Patrick Bertrand include University of Strathclyde & Catholic University of Leuven.
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Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties
TL;DR: In this article, the state-of-the-art of alternating physisorption of oppositely charged polyelectrolytes, the so-called "layer-by-layer" method or "electrostatic self-assembly" (ESA), for the preparation of thin polymer coatings is presented.
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Molecular Oxygen Reduction in PEM Fuel Cells: Evidence for the Simultaneous Presence of Two Active Sites in Fe-Based Catalysts
TL;DR: In this paper, three catalysts for the electroreduction of oxygen have been prepared by pyrolyzing between 400 and 1000 °C two iron precursors (Fe acetate or Fe porphyrin) adsorbed on a synthetic carbon made from the pyrolys of PTCDA (perylene tetracarboxylic dianhydride) in a H2/NH3/Ar atmosphere.
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O-2 reduction in PEM fuel cells: Activity and active site structural information for catalysts obtained by the pyrolysis at high temperature of Fe precursors
TL;DR: In this article, the authors studied the catalytic activity of perylene tetracarboxylic dianhydride (PTCDA) combined with Fe and N precursors for O-2 electroreduction in acidic medium.
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Unveiling N-protonation and anion-binding effects on Fe/N/C-catalysts for O2 reduction in PEM fuel cells
Juan Herranz,Frédéric Jaouen,Michel Lefèvre,Ulrike I. Kramm,Ulrike I. Kramm,Eric Proietti,Jean-Pol Dodelet,Peter Bogdanoff,Sebastian Fiechter,Irmgard Abs-Wurmbach,Patrick Bertrand,Thomas M. Arruda,Sanjeev Mukerjee +12 more
TL;DR: It is revealed that the activity of Fe/N/C-catalysts prepared through a pyrolysis in NH3 is mostly imparted by acid-resistant FeN4-sites whose turnover frequency for the O2 reduction can be regulated by fine chemical changes of the catalyst surface.
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Heat-treated iron and cobalt tetraphenylporphyrins adsorbed on carbon black: Physical characterization and catalytic properties of these materials for the reduction of oxygen in polymer electrolyte fuel cells
G Faubert,Guy Lalande,R. Cote,Daniel Guay,J. P. Dodelet,Lt. Weng,Lt. Weng,Patrick Bertrand,G. Denes +8 more
TL;DR: In this article, the presence of iron and cobalt in their metallic states in these catalysts has been confirmed using XRD, XPS, ToF-SIMS, and bulk analyses.