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Sophia Haussener

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Publications associées (135)

2022 roadmap on low temperature electrochemical CO2 reduction

Ming Ma, Sophia Haussener, Ludmilla Steier, Raffaella Buonsanti, Xiaoyan Wang, Etienne Boutin, Xuan Liu

Electrochemical CO2 reduction (CO2R) is an attractive option for storing renewable electricity and for the sustainable production of valuable chemicals and fuels. In this roadmap, we review recent progress in fundamental understanding, catalyst development ...

IOP Publishing Ltd2022

Prospects and challenges in designing photocatalytic particle suspension reactors for solar fuel processing

Sophia Haussener, Swarnava Nandy, Sangram Ashok Savant

Photocatalytic approaches for the production of solar hydrogen or hydrocarbons are interesting as they provide a sustainable alternative to fossil fuels. Research has been focused on water splitting and on the synthesis of photocatalyst materials and compo ...

2021

Buoyancy-driven melting and solidification heat transfer analysis in encapsulated phase change materials

Sophia Haussener, Nithin Mallya

Controlled melting and solidification in encapsulated phase change materials (PCMs) is of practical interest, for example, in latent heat storage applications. The choice of PCMs and the dynamic heat transfer characteristics during phase change - affecting ...

2021

Modeling and design guidelines of high-temperature photoelectrochemical devices

Sophia Haussener, Ronald Ramiro Gutierrez Perez

Operation of photoelectrochemical devices at high temperatures can provide a pathway to reduce the operating voltage, increase the production rate, and allow for the use of more earth abundant catalysts. Additionally, high-temperature operation offers the ...

2021

Optimizing and Implementing Light Trapping in Thin-Film, Mesostructured Photoanodes

Sophia Haussener, Rafael Angelus Graf, Silvan Suter

Stable semiconductor photoelectrodes for water splitting often exhibit long absorption lengths and poor properties for the efficient separation and transport of photogenerated charges. We propose a combination of resonant and geometric light trapping for t ...

AMER CHEMICAL SOC2020

Electrochemical reactor

Sophia Haussener, Fredy Intelligent Nandjou Dongmeza

The present relates to an internally cooled and humidified electrochemical reactor comprising at least one open-pore cellular plate, which is made of a conductive open-cell material adapted to permit direct circulation of gas and liquid through it in a str ...

2020

Dynamic system modeling of thermally-integrated concentrated PV-electrolysis

Sophia Haussener, Saurabh Yuvraj Tembhurne, Clemens Gregor Suter, Isaac Thomas Holmes-Gentle

Understanding the dynamic response of a solar fuel processing system utilizing concentrated solar radiation and made of a thermally-integrated photovoltaic (PV) and water electrolyzer (EC) is important for the design, development and implementation of this ...

2020

Practical challenges in the development of photoelectrochemical solar fuels production

Sophia Haussener, Miguel Antonio Modestino

This article addresses the challenges presented by photoelectrochemical solar fuels technology in a discussion that begins with a functioning device and proceeds to the more fundamental science of its component parts. In this flow of discussion issues are ...

2020

Pressure Drop and Convective Heat Transfer in Different SiSiC Structures Fabricated by Indirect Additive Manufacturing

Sophia Haussener, Maurizio Barbato, Ehsan Rezaei, Alberto Ortona

The microstructure of porous materials has a significant effect on their transport properties. Engineered cellular ceramics can be designed to exhibit properties at will, thanks to the advances in additive manufacturing. We investigated the heat and mass t ...

ASME2020

Sodium plating and stripping from Na-β"-alumina ceramics beyond 1000 mA/cm2

Corsin Battaglia, Sophia Haussener, Daniel Alexander Landmann

Dendrite formation limits the cycle life of lithium and sodium metal anodes and remainsa major challenge for their integration into next-generation batteries, even whenreplacing the liquid electrolyte by a solid electrolyte. Voids forming in solid metal an ...

2020

Numerical optimization of evaporative cooling in artificial gas diffusion layers for fuel cell applications

Sarah van Rooij, Sophia Haussener

The utilization of evaporative cooling in the gas diffusion layers (GDLs) of fuel cells or electrolyzers can effectively dissipate the heat produced by high power density operation, thus leading to economically more competitive electrochemical cells. The h ...

2020

Mitigating voltage losses in photoelectrochemical cell scale-up

Sophia Haussener, Ronald Ramiro Gutierrez Perez

In solar water splitting, efforts in scaling up the photoelectrochemical cell beyond laboratory scale have started to attract significant attention. Several large-area devices have been demonstrated, but typically the efficiencies are much lower than their ...

ROYAL SOC CHEMISTRY2020

Design guidelines for Al-12%Si latent heat storage encapsulations to optimize performance and mitigate degradation

Sophia Haussener, Selmar Rudolf Binder

We provide detailed insight into the growth kinetics of intermetallic layers formed at the interface of molten Al-12%Si with cylindrical encapsulations of 316L stainless steel. This knowledge is relevant for the design and operation of high-temperature lat ...

ELSEVIER2020

Theoretical maximum photogeneration efficiency and performance characterization of InxGa1-xN/Si tandem water-splitting photoelectrodes

Yannick Kenneth Gaudy, Sophia Haussener

InxGa1-xN is a promising material for flexible and efficient water-splitting photoelectrodes since the bandgap is tunable by modifying the indium content. We investigate the potential of an InxGa1-xN/Si tandem used as a water-splitting photoelectrode. We p ...

2020

Effective conductivity of porous ceramics in a radiative environment

Jérémy Raphaël Mora-Monteros, Sophia Haussener, Clemens Gregor Suter

The knowledge of the effective thermal conductivity, taking into account conduction and radiation, is crucial for the accurate prediction of the thermal behavior of porous foams, especially in an environment where radiation is dominating. We present a comb ...

2020

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

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

Aldo Steinfeld, Tristan Elias Breuillé, 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

Controlling strategies to maximize reliability of integrated photo-electrochemical devices exposed to realistic disturbances

Sophia Haussener, Saurabh Yuvraj Tembhurne

We numerically investigate the conversion of solar energy into chemical energy by integrated photo-electrochemical (IPEC) devices and assess their response to time-dependent changes in the boundary conditions and the material properties. We focus on a devi ...

RSC2019

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

Sophia Haussener, Maurizio Barbato, Ehsan Rezaei, Alberto Ortona

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

Pcm-based heat exchanger and uses thereof

Véronique Michaud, Matthieu Gani, Marc Roulin, Sophia Haussener, Lucas Fuentes Valenzuela

A PCM-based heat exchanger is disclosed, said phase change material (PCM)-based heat exchanger comprising: a) a case having insulated walls comprising an inlet and an outlet; and b) a plurality of modules comprising a support structure containing a phase c ...

2019

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