Publications associées à Copper–chlorine cycle

Pathways to enhance electrochemical CO2 reduction identified through direct pore-level modeling

Sophia Haussener, Etienne Boutin, Shuo Liu, Evan Fair Johnson

Electrochemical conversion of CO2 to fuels and valuable products is one pathway to reduce CO2 emissions. Electrolyzers using gas diffusion electrodes (GDEs) show much higher current densities than aqueous phase electrolyzers, yet models for multi-physical ...

2023

The Effect of Y Content on Structural and Sorption Properties of A(2)B(7)-Type Phase in the La-Y-Ni-Al-Mn System

Andreas Züttel, Loris Giovanni Lombardo

Metal hydrides are an interesting group of chemical compounds, able to store hydrogen in a reversible, compact and safe manner. Among them, A(2)B(7)-type intermetallic alloys based on La-Mg-Ni have attracted particular attention due to their high electroch ...

MDPI2023

Solar fuel processing: Comparative mini-review on research, technology development, and scaling

Sophia Haussener

Solar energy provides an unprecedented potential as a renewable and sustainable energy resource and will substantially reshape our future energy economy. It is not only useful in producing electricity but also (high-temperature) heat and fuel, both require ...

2022

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

Sophia Haussener, Clemens Gregor Suter, Meng Lin

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

Trade-off designs of power-to-methane systems via solid-oxide electrolyzer and the application to biogas upgrading

François Maréchal, Jan Van Herle, Stefan Diethelm, Guillaume Jeanmonod, Ligang Wang

Solid-oxide electrolyzer based power-to-methane is promising for large-scale energy storage as well as biogas upgrading by efficiently converting intermittent renewable power and CO2 (e.g., in biogas) into synthetic methane. Either air or pure oxygen can b ...

2019

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

Compact and General Strategy for Solving Current and Potential Distribution in Electrochemical Cells Composed of Massive Monopolar and Bipolar Electrodes

Hubert Girault, Alejandro Nicolás Colli

A compact, fast and general algorithm based on Dirichlet boundary conditions for the potential field is derived to enable the calculation of local current distribution, shunt currents and the local potential distribution on massive electrodes in electroche ...

2017

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

Storage of Renewable Energy by Reduction of CO2 with Hydrogen

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

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

Storing Renewable Energy in the Hydrogen Cycle

Andreas Züttel, Shunsuke Kato, Elsa Callini

An energy economy based on renewable energy requires massive energy storage, approx. half of the annual energy consumption. Therefore, the production of a synthetic energy carrier, e.g. hydrogen, is necessary. The hydrogen cycle, i.e. production of hydroge ...

Swiss Chemical Soc2015

Biomass To Liquids : Thermo-Economic Analysis and Multi-Objective Optimisation

Emanuela Peduzzi

Biomass is the major source of renewable carbon which can be used to substitute fossil carbon in fuels and chemical products. This thesis addresses the modelling, design and thermoeconomic evaluation and optimisation of processes converting Biomass to Liqu ...

EPFL2015

Increasing Efficiency of Fuel Ethanol Production from Lignocellulosic Biomass by Process Integration

François Maréchal, Martin Gassner

The conversion of lignocellulosic biomass to ethanol is currently one of the most popular options for sustainable production of transportation fuel from renewable resources. Due to the resistance of lignin compounds to biological degradation and the import ...

American Chemical Society2013

Highly efficient water splitting by a dual-absorber tandem cell

Michael Graetzel, Kevin Sivula, Jun Ho Yum, Maurin Cornuz, Jérémie Minh-Châu Brillet, Takashi Hisatomi

Photoelectrochemical water-splitting devices, which use solar energy to convert water into hydrogen and oxygen, have been investigated for decades. Multijunction designs are most efficient, as they can absorb enough solar energy and provide sufficient free ...

Nature Publishing Group2012

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

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

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

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

Increasing Conversion Efficiency in Fuel Ethanol Production from Lignocellulosic Biomass by Polygeneration - and a Paradoxon between Energy and Exergy in Process Integration

François Maréchal, Martin Gassner

In the public and scientific debate on biofuels, ethanol from lignocellulosic biomass is generally the most popular alternative that may allow for a sustainable production. Compared to thermochemical processing of biomass which assures a complete conversio ...

2010

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