Concept

Hydrogen technologies

Related publications (293)

Establishing Stability in Organic Semiconductor Photocathodes for Solar Hydrogen Production

Kevin Sivula, Jun Ho Yum, Rebekah Anne Wells, Liang Yao, Nestor Guijarro Carratala, Florian Le Formal, Yongpeng Liu, Florent Alexandre Boudoire, Arvindh Sekar, Han-Hee Cho

As organic semiconductors attract increasing attention to application in the fields of bioelectronics and artificial photosynthesis, understanding the factors that determine their robust operation in direct contact with aqueous electrolytes becomes a criti ...

AMER CHEMICAL SOC2020

Synthesis of heterogeneous catalysts with metal oxide overcoat for renewable catalysis applications

Yuan-Peng Du

Metal oxide deposition is an emerging synthetic technique for designing heterogeneous catalysts. Depositing a nanoscale overcoat of metal oxide on heterogeneous catalysts can modify their structural and chemical characteristics. Many deposition approaches, ...

EPFL2020

Quantification of fresh water consumption and scarcity footprints of hydrogen from water electrolysis: A methodology framework

Xun Liao

Towards decarbonizing the global economy, hydrogen produced through water electrolysis is expected to be one of the key solutions for variable renewable energy storage and sector coupling, in particular, via the transport sector in the next few decades. Ev ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Taking lanthanides out of isolation: tuning the optical properties of metal-organic frameworks

Berend Smit, Kevin Sivula, Nestor Guijarro Carratala, Kyriakos Stylianou, Gloria Capano, Andrzej Gladysiak, Christopher Patrick Ireland, Maria Fumanal Quintana, Stavroula Kampouri, Davide Tiana, Samantha Lynn Anderson

Metal organic frameworks (MOFs) are increasingly used in applications that rely on the optical and electronic properties of these materials. These applications require a fundamental understanding on how the structure of these materials, and in particular t ...

2020

Characterization of metal organic frameworks of interest for gas adsorption/separation applications

Mehrdad Asgari

Metal-Organic Frameworks (MOFs) are a class of porous materials that are applicable in many energy and environmentally relevant areas, due to their unique features including unprecedented internal surface areas and easy chemical tunability. Gas separation ...

EPFL2020

High-Efficiency Anion Exchange Membrane Water Electrolysis Employing Non-Noble Metal Catalysts

Xile Hu, Pengzuo Chen

Alkaline anion exchange membrane (AEM) water electrolysis is a promising technology for producing hydrogen using renewable energies. However, current AEM electrolyzers still employ noble-metal-containing electrocatalysts, or have significant overpotential ...

WILEY-V C H VERLAG GMBH2020

Identifying Reaction Species by Evolutionary Fitting and Kinetic Analysis: An Example of CO2 Hydrogenation in DRIFTS

Andreas Züttel, Ligang Wang, Emanuele Moioli, Marco Calizzi, Kun Zhao

Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) investigations of molecules at the surface of catalysts exhibit a strong overlap of the adsorption peaks. Therefore, the investigation of the CO2 hydrogenation on a highly active catalyst ...

2019

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

Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution

Kevin Sivula, Nestor Guijarro Carratala, Yongpeng Liu, Yu Zhang, Ting Zhang, Yong Zuo

We present a strategy to produce porous NiTiO3/TiO2 nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO2 needle bundles were synthesized by a hydrothermal procedure. Through the sintering in a ...

ROYAL SOC CHEMISTRY2019

Vanadium-oxygen cell for positive electrolyte discharge in dual-circuit vanadium redox flow battery

Hubert Girault, Justyna Piwek, Alberto Battistel, Christopher Raymond Dennison

The “dual-circuit redox flow battery” takes advantage of a conventional all-vanadium redox flow battery (VRFB) combined with a separated catalytic hydrogen evolution reactor. Depending on demand, the VRFB can be conventionally discharged or supply H2 by us ...

2019

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