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Concept

Cycle ZnO/Zn

Publications associées (17)

Enhanced Solar-to-Fuel Efficiency of Ceria-Based Thermochemical Cycles via Integrated Electrochemical Oxygen Pumping

Sophia Haussener, Meng Lin, Clemens Gregor Suter

The solar thermochemical cycle based on ceria is a promising route for renewable fuel production. The solar-to-fuel efficiency of a thermochemical reactor is highly dependent on the oxygen removal during the reduction step. Conventional nitrogen sweeping ( ...

AMER CHEMICAL SOC2022

High-valence metals improve oxygen evolution reaction performance by modulating 3dmetal oxidation cycle energetics

Yelin Hu, Jun Li, Likai Zheng

Multimetal oxyhydroxides have recently been reported that outperform noble metal catalysts for oxygen evolution reaction (OER). In such 3d-metal-based catalysts, the oxidation cycle of 3dmetals has been posited to act as the OER thermodynamic-limiting proc ...

NATURE RESEARCH2020

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

Understanding Digestive Ripening of Ligand-Stabilized, Charged Metal Nanoparticles

Hubert Girault, Pekka Eero Peljo

Most syntheses of thiolate-protected metal nanoparticles (NPs) include a thermochemical step in which the as-prepared, polydisperse NPs are transformed to a narrower size distribution in a poorly understood process known as digestive ripening (DR). Previou ...

American Chemical Society2017

Modelling of Solar Thermochemical Reaction Systems

Sophia Haussener

This article reviews the progress, challenges and opportunities in numerical modelling of thermal transport, thermochemical reactions and thermomechanics in high-temperature solar thermochemical systems. Continuum-scale models are presented in mathematical ...

Pergamon-Elsevier Science Ltd2017

Co-production of Hydrogen and Electricity from Lignocellulosic Biomass: Process Design and Thermo-economic Optimization

François Maréchal, Laurence Tock

The thermochemical production of hydrogen from lignocellulosic biomass is systematically analyzed by developing environomic models combining thermodynamics with economic analysis, process integration techniques and optimization strategies for the conceptua ...

Pergamon-Elsevier Science Ltd2011

RedOx Stability of Anode Supported Solid Oxide Fuel Cells

Antonin Faes

The weakness of nickel-based solid oxide fuel cell anodes is their low ability to withstand re-oxidation at working temperature, especially for the anode-supported cell design. The volume expansion coming along with nickel (Ni) oxidation induces stresses i ...

EPFL2011

Thermo-economic Evaluation of the Thermochemical Production of Liquid Fuels from Biomass

François Maréchal, Martin Gassner, Laurence Tock

Different technological alternatives for the thermochemical production of liquid fuels from lignocellulosic biomass are systematically analyzed and optimized based on thermo-environomic models. The competitiveness of the production of Fischer-Tropsch fuel ...

2010

Process Design Methodology for Thermochemical Production of Fuels from Biomass : Application to the Production of Synthetic Natural Gas from Lignocellulosic Resources

Martin Gassner

Biomass is a renewable, yet scarce resource since land is limited. This thesis addresses the question how to efficiently convert the available lignocellulosic biomass and biomass wastes to fuel and other useful energy services. In particular, it presents a ...

EPFL2010

Thermochemical production of liquid fuels from biomass: Thermo-economic modeling, process design and process integration analysis

François Maréchal, Martin Gassner, Laurence Tock

A detailed thermo-economic model combining thermodynamics with economic analysis and considering different technological alternatives for the thermochemical production of liquid fuels from lignocellulosic biomass is presented. Energetic and economic models ...

Elsevier2010

Curvature and Strength of Ni-YSZ Solid Oxide Half-cells after RedOx Treatments

Antonin Faes, Darlene Goldstein

One of the main drawbacks of anode-supported solid oxide fuel cell technology is the limited capability to withstand reduction and oxidation (“RedOx”) of the Ni phase. This study compares the effect of RedOx cycles on curvature and strength of half-cells, ...

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa2010

Thermo-economic process model for thermochemical production of Synthetic Natural Gas (SNG) from lignocellulosic biomass

François Maréchal, Martin Gassner

A detailed thermo-economic model considering different technological alternatives for thermochemical production of Synthetic Natural Gas (SNG) from lignocellulosic biomass is presented. First, candidate technology for processes based on biomass gasificatio ...

Elsevier2009

RedOx study of anode supported solid oxide fuel cell

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes, Arata Nakajo

The common technology for solid oxide fuel cells (SOFC) is based on a cermet (ceramic-metal composite) anode of nickel with yttria stabilized zirconia (YSZ), often used as the supporting structure. One of the main limitations of this technology is the tole ...

2009

In situ Reduction and Oxidation of Nickel from Solid Oxide Fuel Cells in a Transmission Electron Microscope

Jan Van Herle, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Antonin Faes

Environmental transmission electron microscopy was used to characterize in situ the reduction and oxidation of nickel from a Ni/YSZ solid oxide fuel cell anode support between 300-500°C. The reduction is done under low hydrogen pressure. The reduction init ...

2009

Redox study of anode supported solid oxide fuel cell

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes

The common technology for solid oxide fuel cells (SOFC) is based on a cermet anode of nickel with yttrium stabilized zirconia (YSZ), often used as the supporting structure. One of the main limitations of this anode technology is the redox tolerance. In thi ...

2008

Thermo-economic optimisation of the integration of electrolysis in a wood to methane process

François Maréchal, Martin Gassner

Converting wood to grid quality methane allows to distribute a CO2 free, renewable enery resource in a conventional energy distribution system and use it in transportation applications. Using a previously developed thermo–economic process model for thermoc ...

2006

Chemical investigations on the thermal behaviour of wood during friction welding

Bernhard Stamm, Julius Natterer

Friction welding is a new technology in the course of which wood pieces are subjected to circular or linear movements in a welding machine. The wood in the contact zone is heated and melted. Aiming at a better understanding of the thermal alteration of woo ...

2006