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Sophia Haussener

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Related publications (135)

Page 3 of 7

Photoelectrochemical behaviour of photoanodes under high photon fluxes

Lorenzo Aimone, Sophia Haussener, Isaac Thomas Holmes-Gentle, Franky Esteban Bedoya Lora

The experimental behaviour of photoelectrochemical materials illuminated under high irradiance conditions >100 kW m−2 has not been studied despite being potentially advantageous for improving the photoelectrochemical performance and the system-level design ...

Royal Society of Chemistry2023

Unsteady Radiative Heat Transfer Model of a Ceria Particle Suspension Undergoing Solar Thermochemical Reduction

Sophia Haussener

Unsteady radiative heat transfer is analyzed numerically in a directly irradiated plane-parallel medium containing a suspension of ceria particles undergoing nonstoichiometric thermal reduction. The micrometer-sized ceria particles are assumed homogenous, ...

AMER INST AERONAUTICS ASTRONAUTICS2019

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, Franky Esteban Bedoya Lora, Roberto Valenza

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

Multi-Scale Modeling of Electrochemical CO2 Reduction

Sophia Haussener

Multi-physical transport processes on multiple scales occur in electrochemical devices and components for CO2 electroreduction. These complex coupled transport processes determine the local environment in the catalyst layer and subsequently also the reacti ...

FUNDACIO DE LA COMUNITAT VALENCIANA SCITO2024

Catalyst layer at the junction of a forward bias bipolar membrane for CO2 electrolysis

Matthieu André Dessiex, Sophia Haussener

CO2 reduction in an electrolysis cell with a forward bias bipolar membrane (BPM) ensures good selectivity and CO2 utilization, but still suffers from large overvoltages. Recent studies have shown that integrating metal-oxide catalysts at the BPM junction i ...

2025

Kinetic Competition between Water-Splitting and Photocorrosion Reactions in Photoelectrochemical Devices

Sophia Haussener, Fredy Intelligent Nandjou Dongmeza

Semiconductor photocorrosion is a major challenge for the stability of photoelectrochemical water-splitting devices. Usually, photocorrosion is studied on the basis of thermodynamic aspects, by comparing the redox potentials of water to the self-decomposit ...

2019

Design and optimization of a high-temperature latent heat storage unit

Sophia Haussener, Ehsan Rezaei

High-temperature latent heat thermal energy storage systems offer compact storage solutions, benefiting from the large latent heat of phase change materials. Common challenges in their design process are the low thermal conductivity of the phase change mat ...

2019

Rate-Determining Step for Electrochemical Reduction of Carbon Dioxide into Carbon Monoxide at Silver Electrodes

Sophia Haussener, Etienne Boutin

Silver is one of the most studied electrode materials for the electrochemical reduction of carbon dioxide into carbon monoxide, a product with many industrial applications. There is a growing number of reports in which silver is implemented in gas diffusio ...

2024

Assessment of the technological viability of photoelectrochemical devices for oxygen and fuel production on Moon and Mars

Sophia Haussener

Human deep space exploration is presented with multiple challenges, such as the reliable, efficient and sustainable operation of life support systems. The production and recycling of oxygen, carbon dioxide (CO2) and fuels are hereby key, as a resource resu ...

Nature Research2023

Utilizing modeling, experiments, and statistics for the analysis of water-splitting photoelectrodes

Sophia Haussener, Yannick Kenneth Gaudy

A multi-physics model of a planar photoelectrochemical water-splitting device was developed, validated and used to identify and quantify the most significant materials-related bottlenecks in photoelectrochemical device performance. The model accounted for ...

Royal Society of Chemistry2016

Simulations of the Irradiation and Temperature Dependence of the Efficiency of Tandem Photoelectrochemical Water-splitting Systems

Sophia Haussener

The efficiency of an operating photoelectrochemical solar-fuels-generator system is determined by the system design, the properties and morphology of the system's components, and the operational conditions. We used a previously developed model comprising o ...

Electrochemical Soc Inc2013

Photo‐Electrochemical Conversion of CO 2 Under Concentrated Sunlight Enables Combination of High Reaction Rate and Efficiency

Sophia Haussener, Silvan Suter, Etienne Boutin, Mahendra Patel

Photo-electrochemical production of solar fuels from carbon dioxide, water, and sunlight is an appealing approach. Nevertheless, it remains challenging to scale despite encouraging demonstrations at low power input. Higher current densities require notable ...

Wiley2022

Single emulsion drops for photocatalytic water splitting as a membrane-free approach to product separation

Sophia Haussener, Esther Amstad, Gaia De Angelis, Swarnava Nandy, Sangram Ashok Savant

The coevolution of hydrogen and oxygen during photocatalytic water splitting presents a challenge for efficient product separation. Here, we demonstrate membrane-free, drop-based photocatalytic water splitting with inherent product separation and competiti ...

2023

In Situ Synthesis of CuxO/N Doped Graphdiyne with Pyridine N Configuration for Ammonia Production via Nitrate Reduction

Sophia Haussener, Jian Li, Roberto Valenza

Electroreduction of nitrate to ammonia provides an interesting pathway for wastewater treatment and valorization. Cu-based catalysts are active for the conversion of NO3− to NO2− but suffer from an inefficient hydrogenation process of NO2−. Herein, CuxO/N- ...

2024

Probabilistic Techno-Economic Assessment of Medium-Scale Photoelectrochemical Fuel Generation Plants

Sophia Haussener, Alexandre Dominique M. Cattry

Photoelectrochemical (PEC) systems are promising approaches for sustainable fuel processing. PEC devices, like conventional photovoltaic-electrolyzer (PV-EC) systems, utilize solar energy for splitting water into hydrogen and oxygen. Contrary to PV-EC syst ...

2024

Design guidelines for concentrated photo-electrochemical water splitting devices based on energy and greenhouse gas yield ratios

Sophia Haussener, Mikaël Dumortier

Device and system design choices for solar energy conversion and storage approaches require holistic design guidelines which simultaneously respect and optimize technical, economic, sustainability, and operating time constraints. We developed a simulation ...

2015

Reliable Performance Characterization of Mediated Photocatalytic Water-Splitting Half Reactions

Sophia Haussener, Meng Lin, Lihao Han

Photocatalytic approaches using two sets of semiconductor particles and a pair of redox shuttle mediators are considered as a safe and economic solution for solar water splitting. Here, we report on accurate experimental characterization techniques for pho ...

Wiley-V C H Verlag Gmbh2017

A thermally synergistic photo-electrochemical hydrogen generator operating under concentrated solar irradiation

Sophia Haussener, Saurabh Yuvraj Tembhurne, Fredy Intelligent Nandjou Dongmeza

Achieving high current densities while maintaining high energy conversion efficiency is one of the main challenges for enhanc-ing the competitiveness of photo-electrochemical devices. We describe a concept that allows this challenge to be overcome by opera ...

2019

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

ICP–MS Assisted EDX Tomography: A Robust Method for Studying Electrolyte Penetration Phenomena in Gas Diffusion Electrodes Applied to CO2 Electrolysis

Sophia Haussener, Francesca Lorenzutti

A carbon paper-based gas diffusion electrode (GDE) is used with a bismuth(III) subcarbonate active catalyst phase for the electrochemical reduction of CO2 in a gas/electrolyte flow-by configuration electrolyser at high current density. It is demonstrated t ...

2024