Institution
École Polytechnique Fédérale de Lausanne
Facility•Lausanne, Switzerland•
About: École Polytechnique Fédérale de Lausanne is a facility organization based out in Lausanne, Switzerland. It is known for research contribution in the topics: Population & Catalysis. The organization has 44041 authors who have published 98296 publications receiving 4372092 citations. The organization is also known as: EPFL & ETHL.
Topics: Population, Catalysis, Computer science, Laser, Context (language use)
Papers published on a yearly basis
Papers
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TL;DR: This study reveals a non-monotonic size-dependence of the selectivity in cube-shaped copper nanocrystals and exploits the material tunability afforded by colloidal chemistry to establish unambiguous structure/property relations between Cu nanocry crystals and their behavior as electrocatalysts for CO2 reduction.
Abstract: Favoring the CO2 reduction reaction (CO2RR) over the hydrogen evolution reaction and controlling the selectivity towards multicarbon products are currently major scientific challenges in sustainable energy research. It is known that the morphology of the catalyst can modulate catalytic activity and selectivity, yet this remains a relatively underexplored area in electrochemical CO2 reduction. Here, we exploit the material tunability afforded by colloidal chemistry to establish unambiguous structure/property relations between Cu nanocrystals and their behavior as electrocatalysts for CO2 reduction. Our study reveals a non-monotonic size-dependence of the selectivity in cube-shaped copper nanocrystals. Among 24 nm, 44 nm and 63 nm cubes tested, the cubes with 44 nm edge length exhibited the highest selectivity towards CO2RR (80 %) and faradaic efficiency for ethylene (41 %). Statistical analysis of the surface atom density suggests the key role played by edge sites in CO2RR.
598 citations
TL;DR: In this paper, a relationship between dielectric permittivity and the tolerance factor (t) is proposed, and transmission electron microscopy is used to demonstrate examples of the structural modifications which cause the anomalies in τe at given values of t.
Abstract: The temperature coefficient of the dielectric permittivity (τe) of nonferroelectric complex perovskites is of importance in the application of these cermaics to microwave filters and resonators. Recent work has directly related changes in the τe of complex perovskites to the onset of structural phase transitions which involve tilting of the octahedra. It can be argued that the onset of octahedral tilting is controlled by the tolerance factor (t). Thus, a relationship between τe and t is postulated. This relationship is discussed and transmission electron microscopy is used to demonstrate examples of the structural modifications which cause the anomalies in τe at given values of t.
598 citations
TL;DR: The ruthenium complex bis-tetrabutylammonium cis-dithiocyanato-N,N'-bis-2,2'-bipyridine-4-carboxylic acid, 4'-carboxylate ruthene(II), N-719, was found to block the dark current of dye sensitized solar cells (DSC), based on mesoporous TiO2 films deposited on a F-doped tin oxide
596 citations
TL;DR: In this paper, the authors discuss the factors that have enabled these developments and ongoing needs in these areas and discuss the importance of sustainability as the major driver for future innovations and prospects for development of new cementitious materials with lower environmental impact.
595 citations
TL;DR: In this article, the authors propose an approach to couple the original 3D equations with a convenient 1D model for the analysis of flows in compliant vessels, which allows for a dramatic reduction of the computational complexity and is suitable for ''absorbing» outgoing pressure waves.
595 citations
Authors
Showing all 44420 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Michael Grätzel | 248 | 1423 | 303599 |
| Ruedi Aebersold | 182 | 879 | 141881 |
| Eliezer Masliah | 170 | 982 | 127818 |
| Richard H. Friend | 169 | 1182 | 140032 |
| G. A. Cowan | 159 | 2353 | 172594 |
| Ian A. Wilson | 158 | 971 | 98221 |
| Johan Auwerx | 158 | 653 | 95779 |
| Menachem Elimelech | 157 | 547 | 95285 |
| A. Artamonov | 150 | 1858 | 119791 |
| Melody A. Swartz | 148 | 1304 | 103753 |
| Henry J. Snaith | 146 | 511 | 123155 |
| Kurt Wüthrich | 143 | 739 | 103253 |
| Richard S. J. Frackowiak | 142 | 309 | 100726 |
| Jean-Paul Kneib | 138 | 805 | 89287 |
| Kevin J. Tracey | 138 | 561 | 82791 |