Expert in high-efficiency photovoltaic systems, efficient transport of optical energy, holographic networks for high-powered lasers
Christophe Moser
Developing an efficient and cost effective hydrogen production system using sunlight and water
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Expert in photovoltaics and thin-film electronics
Julien Bailat
Expert in structure-property relationships in ceramic energy materials, pattern formation and self-assembly, nano-bio interfaces
Artur Braun
Expert in thermal sciences, fluid dynamics and thermo/electro/photochemistry in complex multi?phase media
Sophia Haussener
Expert in optofluidics and nonlinear imaging
Demetri Psaltis

Project Description

This project aims to develop a hydrogen production system using sunlight in an integrated manner with earth abundant materials mimicking natural photosynthesis.  PhotoElectroChemical (PEC) systems use semi-conductor materials to absorb photons from the sun to generate a potential high enough (>1.2 V) to split water and produce hydrogen and oxygen at an integrated electrolysis cell. A major advantage of PEC systems over systems composed of photovoltaic panels (PV) in conjunction to a separate electrolyzer is their integral approach, i.e. the PV cell is part of the electrolyzer. This provides opportunities not only for cost reduction but also for improvement in the efficiency of the electrochemical reaction.   

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Our researchers in the media

One Step Closer to Hydrogen Production from Photoelectrochemical Water-Splitting

Optofluidics Could Help Solve the Energy Challenge

Optofluidics, Nano Technology and Energy at EPFL

An exceptional journey

Notable publications

Design and Implementation of Solar-Driven Water-Splitting Devices
Adam Weber, Chengxiang Xiang, Miguel Modestino, Shane Ardo, Sophia Haussener, Kate Fountain, John Stevens, Meenesh Singh, Katie Chen, Shu Hu, Matthew Shaner
Angewandte Chemie International Edition. Accepted Article. DOI: 10.1002/anie.201510463R1

Mass transport aspects of electrochemical solar hydrogen generation
Miguel A. Modestino, S. Mohammad H. Hashemi, Sophia Haussener
Energy and Environmental Science, 2016, 9 (5), 1533-1551

Hollow Mesoporous Plasmonic Nanoshells for Enhanced Solar Vapor Generation
Marcin S. Zielinski, Jae-Woo Choi, Thomas La Grange, Miguel A. Modestino, S. Mohammad H. Hashemi, Ye Pu, Susanne Birkhold, Jeffrey A. Hubbell and Demetri Psaltis
Nano letters 16 (4), 2159-2167

The electronic, chemical and electrocatalytic processes and intermediates on iron oxide surfaces during photoelectrochemical water splitting,
A. Braun, Y. Hu, F. Boudoire, D. K. Bora, DD Sarma, M. Graetzel, C. M. Eggleston
Catal. Today (2016) 260, 72-81


Posters from 2016

Artificial Photosynthesis - Investigation of the Bio-Inorganic Interface
Niels Burzan, Artur Braun

Electrocatalysts for hydrogen production
D. Bora, F. Boudoire, Artur Braun, E.C. Constable, G. Fortunato, M. Grätzel, C. E. Housecroft, Y. Hu, M. Mayer, N. S. Murray, R. Toth, R. M. Walliser

Modelling based design of integrated photoelectrochemical devices working under concentrated irradiation
Saurabh Tembhurne, Fredy Nandjou, Sophia Haussener

Engineering Solar-H2 Devices


Posters from 2015

Microfluidic Water Splitting Platforms
Mohammad H. Hashemi, Miguel A. Modestino, Demetri Psaltis

Silicon based devices for hydrogen production
Didier Dominé, Linus Löfgren, Paul Kohler, Jacques Levrat, Loris Barraud, Nicolas Badel, Jonathan Champliaud, Christophe Allebe, Matthieu Despeisse, Julien Bailat

Design guidelines based on coupled multiphysics modeling for integrated PEC devices working with concentrated irradiation
Saurabh Tembhurne, Sophia Haussener

Guiding practical pathways for photo-electrochemical solar-hydrogen generation
Mikael Dumortier, Sophia Haussener


Posters from 2014

Self-tracking solar concentration
Volker Zagolla, Eric Tremblay, Christophe Moser

Integration Aspects of Solar-Fuel Generators
Claudia Rodriguez, Miguel Modestino, Demetri Psaltis and Christophe Moser

Electrocatalytic hydrogen generation
Debajeet Bora, Florent Boudoire, Yelin Hu, Artur Braun

Design of Optofluidic Components for an Integrated Electrolyzer
Seyyed Mohammad Hosseini Hashemi, Jae-Woo Choi, Miguel A. Modestino, Demetri Psaltis


Posters from 2013

Sun to Fuel
Christophe Moser, Demetri Psaltis, Sophia Haussener, Artur Braun, Julien Bailat


Project Photos