pH-Induced versus Oxygen-Induced Surface Enrichment and Segregation Effects in Pt–Ni Alloy Nanoparticle Fuel Cell Catalysts

Autor: Lin Gan, Chunhua Cui, Peter Strasser, Walid Hetaba, Manuel Gliech, Vera Beermann, Detre Teschner, Stefan Rudi, Robert Schlögl

Publikováno v: ACS Catalysis. 7:6376-6384

We present a voltammetric, spectroscopic, and atomic-scale microscopic study of how initial interfacial contact with high- and low-pH electrolytes affects the surface voltammetry, near-surface composition, CO binding, and electrocatalytic oxygen redu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aab930a7e23e7347a1ffcd3eaf14ac95
https://doi.org/10.1021/acscatal.7b00996

Synthesis of Ni-SiO₂/C Supported Platinum Catalysts for Improved Electrochemical Activity Towards Ethanol Oxidation

Autor: Hadla S, Ferreira, Hadma S, Ferreira, Manuel, Gliech, Arno, Bergmann, Vera, Beermann, Maria do C, Rangel, Katlin I B, Eguiluz, Giancarlo R, Salazar-Banda

Publikováno v: Journal of nanoscience and nanotechnology. 19(8)

A series of Pt/Ni-SiO₂/C catalysts with different mass proportions of Ni-SiO₂/C (0:100, 30:70, 50:50, 70:30 and 100:0) were prepared and studied towards ethanol electrochemical oxidation in acid medium. The support silica particles were initially

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3f3affdc59df5417ad35104b17b171db
https://pubmed.ncbi.nlm.nih.gov/30913753

Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO

Autor: Cheonghee, Kim, Fabio, Dionigi, Vera, Beermann, Xingli, Wang, Tim, Möller, Peter, Strasser

Publikováno v: Advanced materials (Deerfield Beach, Fla.). 31(31)

In the face of the global energy challenge and progressing global climate change, renewable energy systems and components, such as fuel cells and electrolyzers, which close the energetic oxygen and carbon cycles, have become a technology development

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::5a7a4d0b5e2b06e877099f56bb9e6906
https://pubmed.ncbi.nlm.nih.gov/30570788

Surface distortion as a unifying concept and descriptor in oxygen reduction reaction electrocatalysis

Autor: Tristan Asset, Sebastian Henning, Alain Pasturel, Laure Guétaz, Gilles Renou, Jakub Drnec, Vera Beermann, Peter Strasser, Frédéric Maillard, Laetitia Dubau, Raphaël Chattot, Pierre Bordet, Juan Herranz, Laura Kühn, Alexander Eychmüller, Stefanie Kühl, Thomas J. Schmidt, Olivier Le Bacq

Publikováno v: Nature Materials
Nature Materials, Nature Publishing Group, 2018, 17 (9), pp.827-833. ⟨10.1038/s41563-018-0133-2⟩
Nature materials
Nature Materials, 2018, 17 (9), pp.827-833. ⟨10.1038/s41563-018-0133-2⟩

Tuning the surface structure at the atomic level is of primary importance to simultaneously meet the electrocatalytic performance and stability criteria required for the development of low-temperature proton-exchange membrane fuel cells (PEMFCs). How

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86120916c7bfc493b2fb2681303f924a
https://hal.archives-ouvertes.fr/hal-01856128

Tuning the Electrocatalytic Oxygen Reduction Reaction Activity and Stability of Shape-Controlled Pt-Ni Nanoparticles by Thermal Annealing - Elucidating the Surface Atomic Structural and Compositional Changes

Autor: Martin Gocyla, Elliot Padgett, David A. Muller, Mikaela Goerlin, Vera Beermann, Meital Shviro, Peter Strasser, Marc Heggen, Rafal E. Dunin-Borkowski, Henrike Schmies, Stefanie Kühl, Nina Erini

Publikováno v: Journal of the American Chemical Society. 139(46)

Shape-controlled octahedral Pt–Ni alloy nanoparticles exhibit remarkably high activities for the electroreduction of molecular oxygen (oxygen reduction reaction, ORR), which makes them fuel-cell cathode catalysts with exceptional potential. To unfo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e056b84bd0e9e66bb50c4adbbd502c05
https://pubmed.ncbi.nlm.nih.gov/29019692