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Concept

Thermochemical cycle

Publications associées (29)

High-flux optical systems for solar thermochemistry

Sophia Haussener, Gaël Jean Clément Levêque

High-flux optical systems (HFOSs) are optical concentrators used to increase the radiative flux of the natural terrestrial solar irradiation. High radiative flux concentration leads to high energy density in solar receivers which allow to obtain high tempe ...

2017

Defects on surface and interface for photoelectrochemical properties of hematite photoanodes

Yelin Hu

Hydrogen is a highly versatile fuel that may become one of the key solutions to face our future energy challenges. Among all these methods for hydrogen production, solar water splitting offers possible advantages regarding components integration, stability ...

EPFL2017

Base-Free Transfer Hydrogenation with an Ionic-Liquid-Supported Ruthenium eta(6)-Arene Bis(pyrazolyl)methane Catalyst

Paul Joseph Dyson, Andrew Douglas Phillips, Francisco Sepulveda

Ruthenium complexes of the type [RuCl(eta(6)-arene)-(NN)]X (X = BF4 or BPh4) featuring an eta(6)-arene ligand modified with an imidazolium ring and incorporating the bis(azo) chelating (NN) ligands 2-hydroxyphenylbis(3,5-dimethylpyrazol-1-yl) methane or 2- ...

Wiley-Blackwell2017

Solar fuel processing efficiency for ceria redox cycling using alternative oxygen partial pressure reduction methods

Sophia Haussener, Meng Lin

Solar-driven non-stoichiometric thermochemical redox cycling of ceria for the conversion of solar energy into fuels shows promise in achieving high solar-to-fuel efficiency. This efficiency is significantly affected by the operating conditions, e.g. redox ...

Pergamon-Elsevier Science Ltd2015

Nanocalorimetric platform for accurate thermochemical studies in microliter volumes

Martinus Adela Maria Gijs, Thomas Lehnert, Raphaël Etienne Jean Trouillon, Rima Padovani

A straightforward and general way for monitoring chemical reactions is via their thermal signature. Such approach requires however an experimental setup with a high thermal stability that simultaneously allows time-resolved heat detection with high sensiti ...

Royal Soc Chemistry2015

Characterization of Cracks and their Effects on the Effective Transport Pathways in Ni-YSZ Anodes after Reoxidation Using X-Ray Nanotomography

Jan Van Herle, Jian Wang, Siyuan Wang, Arata Nakajo, Fabio Greco

Reduction-oxidation cycling of Ni-based electrodes for solid oxide fuel/electrolysis cells irreversibly alters their microstructure and can cause the fracture of the electrolyte. Non-destructive 3-D imaging enables tracking of microstructural changes that ...

2015

Storage of Renewable Energy by Reduction of CO2 with Hydrogen

Andreas Züttel, Philippe Mauron, Elsa Callini, Shunsuke Kato, Marco Roman Holzer

The main difference between the past energy economy during the industrialization period which was mainly based on mining of fossil fuels, e.g. coal, oil and methane and the future energy economy based on renewable energy is the requirement for storage of t ...

Schweizerische Chemische Gesellschaft2015

Water photolysis at 12.3% efficiency via perovskite photovoltaics and Earth-abundant catalysts

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jingshan Luo, Matthew Thomas Mayer, Marcel Roland Schreier, Stanley David Tilley, Jeong-Hyeok Im

Although sunlight-driven water splitting is a promising route to sustainable hydrogen fuel production, widespread implementation is hampered by the expense of the necessary photovoltaic and photoelectrochemical apparatus. Here, we describe a highly efficie ...

American Association for the Advancement of Science2014

Design and cost considerations for practical solar-hydrogen generators

Demetri Psaltis, Christophe Moser, Miguel Antonio Modestino

Solar-hydrogen generation represents a promising alternative to fossil fuels for the large-scale implementation of a clean-fuel transportation infrastructure. A significant amount of research resources has been allocated to the development of photoelectroc ...

Royal Society of Chemistry2014