M
Michal Václavů
Researcher at Charles University in Prague
Publications - 27
Citations - 994
Michal Václavů is an academic researcher from Charles University in Prague. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Sputter deposition. The author has an hindex of 16, co-authored 27 publications receiving 824 citations. Previous affiliations of Michal Václavů include National Institute for Materials Science.
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Journal ArticleDOI
Maximum noble-metal efficiency in catalytic materials: atomically dispersed surface platinum.
Albert Bruix,Yaroslava Lykhach,Iva Matolínová,Armin Neitzel,Tomáš Skála,Nataliya Tsud,Mykhailo Vorokhta,Vitalii Stetsovych,Klára Ševčíková,Josef Mysliveček,Roman Fiala,Michal Václavů,Kevin C. Prince,Stéphanie Bruyère,Valérie Potin,Francesc Illas,Vladimír Matolín,Jörg Libuda,Konstantin M. Neyman,Konstantin M. Neyman +19 more
TL;DR: Using DFT calculations, a specific structural element is identified, a ceria "nanopocket", which binds Pt(2+) so strongly that it withstands sintering and bulk diffusion and is therefore identified as an anchoring site for Pt-CeO2 nanocomposites showing high Pt efficiency in fuel-cell catalysis.
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Water interaction with CeO2(111)/Cu(111) model catalyst surface
Vladimír Matolín,Iva Matolínová,Filip Dvořák,Viktor Johánek,Josef Mysliveček,Kevin C. Prince,Tomáš Skála,Oleksandr Stetsovych,N. Tsud,Michal Václavů,Bretislav Smid +10 more
TL;DR: In this paper, the interaction of water with fully oxidized and partially reduced CeO2(1.1) thin film model catalyst was investigated by photoelectron spectroscopy (PES), scanning tunneling microscopy (STM) and temperature programmed desorption (TPD).
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Platinum-Doped CeO2 Thin Film Catalysts Prepared by Magnetron Sputtering
Vladimír Matolín,Iva Matolínová,Michal Václavů,Ivan Khalakhan,Mykhailo Vorokhta,Roman Fiala,Igor Píš,Igor Píš,Zdeněk Sofer,Jana Poltierová-Vejpravová,Toshiyuki Mori,Valérie Potin,Hideki Yoshikawa,Shigenori Ueda,Keisuke Kobayashi +14 more
TL;DR: The synchrotron radiation X-ray photoelectron spectra showed the formation of cerium oxide with completely ionized Pt(2+,4+) species, and with the Pt( 2+)/Pt(4+) ratio strongly dependent on the substrate.
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Optimization of ionomer-free ultra-low loading Pt catalyst for anode/cathode of PEMFC via magnetron sputtering
Anna Ostroverkh,Viktor Johánek,Martin Dubau,Peter Kúš,Ivan Khalakhan,Břetislav Šmíd,Roman Fiala,Roman Fiala,Michal Václavů,Yevhenii Ostroverkh,Vladimír Matolín +10 more
TL;DR: In this article, thin-film Pt catalysts with ultra-low metal loadings were prepared by magnetron sputtering onto various carbon-based substrates, and the performance of these catalysts acting as anode, cathode, or both electrodes in a proton exchange membrane fuel cell (PEMFC) was investigated in H2/O2 and H 2/air mode.
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Pt and Sn Doped Sputtered CeO2Electrodes for Fuel Cell Applications
Vladimír Matolín,M. Cabala,Iva Matolínová,M. Škoda,Michal Václavů,Kevin C. Prince,Tomáš Skála,Toshiyuki Mori,Hideki Yoshikawa,Yoshiyuki Yamashita,Shigenori Ueda,K. Kobayashi +11 more
TL;DR: In this paper, the interaction of Pt with CeO2 layers was investigated by using photoelectron spectroscopy, and 30-nanometre-thick Pt and Sn doped CeO 2 layers were deposited simultaneously by rf-magnetron sputtering on a Si(001) substrate and a carbon diffusion layer of a polymer membrane fuel cell by using a composite CeO+Pt-Sn target.