Publications associées à Chronologie des technologies de l'hydrogène

Assessing the Charge Carrier Dynamics at Hybrid Interfaces of Organic Photoanodes for Solar Fuels

Kevin Sivula, Yongpeng Liu, Han-Hee Cho, Alexander Wieczorek

Organic semiconductors (OSCs) have emerged as promising active layers for photoanodes to drive photoelectrochemical (PEC) oxidation reactions. Interfacing an OSC with an inorganic electron transport layer (ETL) is key to enabling both high performance and ...

Amer Chemical Soc2024

High-throughput parallel testing of ten photoelectrochemical cells for water splitting: case study on the effects of temperature in hematite photoanodes

Sophia Haussener, Isaac Thomas Holmes-Gentle, Roberto Valenza, Franky Esteban Bedoya Lora

High-throughput testing of photoelectrochemical cells and materials under well-defined operating conditions can accelerate the discovery of new semiconducting materials, the characterization of the phenomena occurring at the semiconductor-electrolyte inter ...

Royal Soc Chemistry2024

Performance evaluation and the implementation of the turbocharger, fuel cell, and battery in Unmanned Aerial Vehicles (UAVs)

Jan Van Herle, Hossein Pourrahmani

The current study evaluates integrating fuel cell technology into the batteries as an alternative for internal combustion engines (ICEs) for Unmanned Aerial Vehicles (UAV). To further improve the performance of the UAV, a turbocharger is also integrated to ...

Elsevier2023

Energy efficient hydrogen drying and purification for fuel cell vehicles

Hubert Girault, Heron Vrubel, Yorick Ligen

High-purity standards are required for hydrogen used in fuel cell vehicles. The relative abundance of contaminants is highly influenced by the production pathway. Hydrogen obtained from water electrolysis presents three main pollutants: Nitrogen, Oxygen an ...

Elsevier2020

Hydrogenation of ZnFe2O4 Flat Films: Effects of the Pre-Annealing Temperature on the Photoanodes Efficiency for Water Oxidation

Kevin Sivula, Charles Roger Jean Lhermitte, Annalisa Polo

The effects induced by post-synthesis hydrogenation on ZnFe2O4 flat films in terms of photoelectrochemical (PEC) performance of photoanodes for water oxidation have been deeply investigated as a function of the pre-annealing temperature of the materials. T ...

2020

Analysis of hydrogen distribution and migration in fired passivating contacts (FPC)

Christophe Ballif, Franz-Josef Haug, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Andrea Ingenito, Matthieu Despeisse, Philippe Wyss, Mario Joe Lehmann

High temperature passivating contacts for c-Si based solar cells are intensively studied because of their potential in boosting solar cell efficiency while being compatible with industrial processes at high temperatures. In this work, the hydrogenation mec ...

2019

An integrated concentrated solar fuel generator utilizing a tubular solid oxide electrolysis cell as solar absorber

Sophia Haussener, Meng Lin

We numerically assessed the potential of a solar reactor concept for efficient fuel processing under concentrated solar irradiation. This design integrates a cavity receiver, a tubular solid oxide electrolyzer, and the concentrated photovoltaic cells into ...

2018

Solar-Driven High-Temperature Electrolysis Reactor for Fuel Processing : Modeling, Optimization, and Experimentation

Meng Lin

Solar-driven high-temperature electrolysis (HTE) and thermochemical cycles (TCC) are two promising pathways for fuel processing and energy storage, which are considered in this thesis. The goals of this thesis are: i) offering engineering guidelines at sys ...

EPFL2018

Heptacoordinate Co-II Complex: A New Architecture for Photochemical Hydrogen Production

Euro Solari, Albert Ruggi, Fiorella Lucarini, Serhii Vasylevskyi

The first heptacoordinate cobalt catalyst for light-driven hydrogen production in water has been synthesized and characterized. Photochemical experiments using Ru(bpy)(3) as photosensitizer gave a turnover number (TON) of 16300molH(2)(molcat.)(-1) ac ...

Wiley-V C H Verlag Gmbh2017

Micro-solid state energy conversion membranes: influence of doping and strain on oxygen ion transport and near order for electrolytes

Paul Muralt

Enhancing the efficiency of micro-energy conversion devices through engineering of the structure-transport relationship is a prerequisite toward next generation micro-electrolysers and fuel cells. Here, oxygen ion conducting free-standing thin films are ke ...

Royal Society of Chemistry2017

Water Oxidation Kinetics of Accumulated Holes on the Surface of a TiO2 Photoanode: A Rate Law Analysis

Florian Le Formal, Yimeng Ma, Min Ling

It has been more than 40 years since Fujishima and Honda demonstrated water splitting using TiO2, yet there is still no clear mechanism by which surface holes on TiO2 oxidize water. In this paper, we use a range of complementary techniques to study this re ...

Amer Chemical Soc2017

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

Techno-economic modeling and optimization of solar-driven high-temperature electrolysis systems

Sophia Haussener, Meng Lin

We present a techno-economic analysis of solar-driven hightemperature electrolysis systems used for the production of hydrogen and synthesis gas. We consider different strategies for the incorporation of solar energy, distinguished by the use of differing ...

Pergamon-Elsevier Science Ltd2017

A Pd-Cu2O nanocomposite as an effective synergistic catalyst for selective semi-hydrogenation of the terminal alkynes only

Shuliang Yang, Li Peng

A new type lead-free catalyst of a Pd-Cu2O nanocomposite was developed for highly selective semi-hydrogenation of alkynes. With unprecedented selectivity for the semi-hydrogenation of terminal alkynes to alkenes, we show for the first time that the catalys ...

Royal Society of Chemistry2016

Modeling, Simulation, and Implementation of Solar-Driven Water-Splitting Devices

Sophia Haussener, Miguel Antonio Modestino, Rui Liu, Ke Sun

An integrated cell for the solar-driven splitting of water consists of multiple functional components and couples various photoelectrochemical (PEC) processes at different length and time scales. The overall solar-to-hydrogen (STH) conversion efficiency of ...

Wiley-VCH Verlag GmbH2016

Modeling of concurrent CO2 and water splitting by practical photoelectrochemical devices

Sophia Haussener, Ronald Ramiro Gutierrez Perez

Concurrent solar generation of hydrogen and CO through photoelectrochemical (PEC) water and CO2 electrolysis, and the subsequent use of the product gas mixture in conventional Fischer-Tropsch processes, has the potential to provide a flexible pathway for d ...

Electrochemical Soc Inc2016

Solar-to-Hydrogen Production at 14.2% Efficiency with Silicon Photovoltaics and Earth-Abundant Electrocatalysts

Christophe Ballif, Demetri Psaltis, Christophe Moser, Matthieu Despeisse, Antonin Faes, Enrico Chinello, Jan-Willem Alexander Schüttauf, Julien Claude Bailat, Miguel Antonio Modestino, Antonio Delfino, David Lambelet

Affordable, stable and earth-abundant photo-electrochemical materials are indispensable for the large-scale implementation of sunlight-driven hydrogen production. Here we present an intrinsically stable and scalable solar water splitting device that is ful ...

Electrochemical Society2016

Fabrication and Characterization of Functional ALD Metal Oxide Thin Films for Solar Applications

Ludmilla Steier

Motivated to revolutionize our today's fossil fuels based energy production, my work concentrated on the investigation of promising low-cost materials for photoelectrochemical hydrogen production and photovoltaic electricity generation. Hydrogen presents a ...

EPFL2016

Photoinduced Absorption Spectroscopy of CoPi on BiVO4: The Function of CoPi during Water Oxidation

Florian Le Formal, Yimeng Ma

This paper employs photoinduced absorption and electrochemical techniques to analyze the charge carrier dynamics that drive photoelectrochemical water oxidation on bismuth vanadate (BiVO4), both with and without cobalt phosphate (CoPi) co-catalyst. These r ...

Wiley-V C H Verlag Gmbh2016

An Integrated Device View on Photoelectrochemical Solar-Hydrogen Generation

Sophia Haussener, Miguel Antonio Modestino

Devices that directly capture and store solar energy have the potential to significantly increase the share of energy from intermittent renewable sources. Photo-electrochemical solar-hydrogen generators could become an important contributor, as these devic ...

Annual Reviews2015