Publications de Laurent Liardet

Office densification effects on comfort, energy, and carbon lifecycle performance: An integrated and exploratory study

Thomas Bernard Paul Jusselme, Endrit Hoxha, Cédric Liardet, Laurent Liardet

Generally, the environmental impacts of buildings are benchmarked per square meter as a functional unit. However, this practice prevents developing a user-centered approach in which performance is linked to real usage and not building size. Currently, the ...

2020

Photoelectrocatalytic arene C–H amination

Xile Hu, Lei Zhang, Jingshan Luo, Dan Ren, Laurent Liardet

Photoelectrochemical cells are widely studied for solar energy conversion. However, they have rarely been used for the synthesis of high added-value organic molecules. Here we describe a strategy to use haematite, an abundant and robust photoanode, for non ...

2019

An ultrathin cobalt-iron oxide catalyst for water oxidation on nanostructured hematite photoanodes

Michael Graetzel, Xile Hu, Jingshan Luo, Jordan Emanuel Katz, Laurent Liardet

The harvesting of sunlight by a photoelectrochemical (PEC) cell to split water into hydrogen and oxygen is an attractive strategy to store solar energy in the form of chemical bonds. The oxygen evolution reaction (OER) remains a bottleneck for the developm ...

Royal Society of Chemistry2019

Synthesis and Application of Transition Metal Oxides as Oxygen Evolution Catalysts

Laurent Liardet

Nowadays, mankind is facing an important energy challenge. Depletion in fossil fuels reserves and increasing energy demand, coupled with the problematic greenhouse effect induced by massive anthropogenic release of carbon dioxide into the atmosphere, are d ...

EPFL2019

Transition Metal Oxides as Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Solutions: An Application-Inspired Renaissance

Xile Hu, Fang Song, Lichen Bai, Laurent Liardet, Seunghwa Lee, Aliki Moysiadou, Chao Hu

Water splitting is the essential chemical reaction to enable the storage of intermittent energies such as solar and wind in the form of hydrogen fuel. The oxygen evolution reaction (OER) is often considered as the bottleneck in water splitting. Though meta ...

2018

Amorphous Cobalt Vanadium Oxide as a Highly Active Electrocatalyst for Oxygen Evolution

Xile Hu, Laurent Liardet

The water-splitting reaction provides a promising mechanism to store renewable energies in the form of hydrogen fuel. The oxidation half-reaction, the oxygen evolution reaction (OER), is a complex four-electron process that constitutes an efficiency bottle ...

2018

Photoelectrochemical deposition of CoP on cuprous oxide photocathodes for solar hydrogen production

Xile Hu, Laurent Liardet, Matthew Thomas Mayer, Lucas-Alexandre Stern, Carlos Gilberto Morales Guio

Photoelectrochemical (PEC) water splitting is an attractive and sustainable energy conversion method. In this work, cobalt phosphide (CoP) is photoelectrochemically deposited on a p-type cuprous oxide (pCu(2)O) photocathode for solar hydrogen production. U ...

Elsevier2017

Oxidatively Electrodeposited Thin-Film Transition Metal (Oxy)hydroxides as Oxygen Evolution Catalysts

Xile Hu, Laurent Liardet, Carlos Gilberto Morales Guio

The electrolysis of water to produce hydrogen and oxygen is a simple and attractive approach to store renewable energies in the form of chemical fuels. The oxygen evolution reaction (OER) is a complex four-electron process that constitutes the most energy- ...

American Chemical Society2016

Photoelectrochemical Hydrogen Production in Alkaline Solutions Using Cu2O Coated with Earth-Abundant Hydrogen Evolution Catalysts

Michael Graetzel, Xile Hu, Laurent Liardet, Carlos Gilberto Morales Guio, Matthew Thomas Mayer, Stanley David Tilley

The splitting of water into hydrogen and oxygen molecules using sunlight is an attractive method for solar energy storage. Until now, photoelectrochemical hydrogen evolution is mostly studied in acidic solutions, in which the hydrogen evolution is more fac ...

Wiley-Blackwell2015

Solar Hydrogen Production by Amorphous Silicon Photocathodes Coated with a Magnetron Sputter Deposited Mo

Christophe Ballif, Xile Hu, Laurent Liardet, Björn Niesen, Carlos Gilberto Morales Guio

Coupling of Earth-abundant hydrogen evolution catalysts to photoabsorbers is crucial for the production of hydrogen fuel using sunlight. In this work, we demonstrate the use of magnetron sputtering to deposit Mo2C as an efficient hydrogen evolution reactio ...

Amer Chemical Soc2015