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Mg/Ti multilayers: Structural and hydrogen absorption properties

Baldi, A. (author), Pálsson, G.K. (author), Gonzalez-Silveira, M. (author), Schreuders, H. (author), Slaman, M. (author), Rector, J.H. (author), Krishnan, G. (author), Kooi, B.J. (author), Walker, G.S. (author), Fay, M.W. (author), Hjörvarsson, B. (author), Wijngaarden, R.J. (author), Dam, B. (author), Griessen, R. (author)

Mg-Ti alloys have uncommon optical and hydrogen absorbing properties, originating from a “spinodal-like” microstructure with a small degree of chemical short-range order in the atomic distribution. In the present study we artificially engineer short-range order by depositing Pd-capped Mg/Ti multilayers with different periodicities....

journal article 2010

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A reliable, sensitive and fast optical fiber hydrogen sensor based on surface plasmon resonance

Perrotton, C. (author), Westerwaal, R.J. (author), Javahiraly, N. (author), Slaman, M. (author), Schreuders, H. (author), Dam, B. (author), Meyrueis, P. (author)

We report for the first time on the experimental response of a Surface Plasmon Resonance fiber optic sensor based on wavelength modulation for hydrogen sensing. This approach of measuring the hydrogen concentration makes the sensor insensitive to intensity fluctuations. The intrinsic fiber sensor developed provides remote sensing and enables the...

journal article 2013

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Quasifree Mg–H thin films

Baldi, A. (author), Palmisano, V. (author), Gonzalez-Silveira, M. (author), Pivak, Y. (author), Slaman, M. (author), Schreuders, H. (author), Dam, B. (author), Griessen, R. (author)

The thermodynamics of hydrogen absorption in Pd-capped Mg films are strongly dependent on the magnesium thickness. In the present work, we suppress such dependency by inserting a thin Ti layer between Mg and Pd. By means of optical measurements, we show that the surface energy contribution to the destabilization of MgH2 is negligible. The...

journal article 2009

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Aberration-Corrected STEM Investigation of Metallic Ti Cluster Formation in Mg-Ti Hydrides

Kepaptsoglou, D.M. (author), Jensen, I.J.T. (author), Sarahan, M. (author), Ramasse, Q.M. (author), Schreuders, H. (author), Dam, B. (author), Diplas, S. (author), Løvvik, O.M. (author), Taftø, J. (author)

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

journal article 2011

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Thermodynamic properties, hysteresis behavior and stress-strain analysis of MgH2 thin films, studied over a wide temperature range

Pivak, Y. (author), Schreuders, H. (author), Dam, B. (author)

Using hydrogenography, we investigate the thermodynamic parameters and hysteresis behavior in Mg thin films capped by Ta/Pd, in a temperature range from 333 K to 545 K. The enthalpy and entropy of hydride decomposition, ?Hdes = ?78.3 kJ/molH2, ?Sdes = ?136.1 J/K molH2, estimated from the Van't Hoff analysis, are in good agreement with bulk...

journal article 2012

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Wavelength response of a surface plasmon resonance palladium-coated optical fiber sensor for hydrogen detection

Perrotton, C. (author), Slaman, M. (author), Javahiraly, N. (author), Schreuders, H. (author), Dam, B. (author), Meyrueis, P. (author)

An optical fiber using palladium as sensitive layer is characterized in the range of 450 to 900 nm. The sensitive layer is deposited on the outside of a multimode fiber, after removing the optical cladding. The sensor is based on a measurement technique that uses the surface plasmon resonance effect. A continuous change in output intensity is...

journal article 2011

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Samenwerken op buurtniveau is cruciaal

Van Bortel, G.A. (author), Schreuders, H. (author), Van Overmeeren, A.J. (author)

journal article 2011

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Efficient electricity storage with a battolyser, an integrated Ni-Fe battery and electrolyser

Mulder, F.M. (author), Weninger, B. (author), Middelkoop, J. (author), Ooms, F.G.B. (author), Schreuders, H. (author)

Grid scale electricity storage on daily and seasonal time scales is required to accommodate increasing amounts of renewable electricity from wind and solar power. We have developed for the first time an integrated battery-electrolyser ('battolyser') that efficiently stores electricity as a nickel-iron battery and can split water into hydrogen...

journal article 2017

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Metal Hydride Based Optical Hydrogen Sensors

Bannenberg, L.J. (author), Boelsma, C. (author), Asano, Kohta (author), Schreuders, H. (author), Dam, B. (author)

Hydrogen is playing a key role in the transition to a sustainable economy and in a variety of industrial processes. For its safe handling, the detection of hydrogen in a fast, reliable and accurate manner is crucial. Thin film metal hydride based optical hydrogen sensors provide an attractive option to sense hydrogen in a variety of conditions...

journal article 2020

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Structural properties and anion dynamics of yttrium dihydride and photochromic oxyhydride thin films examined by in situ μ+SR

Chaykina, D. (author), De Krom, T. (author), Colombi, G. (author), Schreuders, H. (author), Suter, A. (author), Prokscha, T. (author), Dam, B. (author), Eijt, S.W.H. (author)

Thin films of rare-earth metal oxyhydrides, such as yttrium oxyhydrides (YH3-2xOx), show a photochromic effect where the transparency of the films decreases reversibly upon exposure to UV light. However, the exact mechanism behind this effect is unknown. In this paper, we describe the behavior of YH3-2xOx thin films, with different O2-:H-...

journal article 2021

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Ammonia Synthesis at Ambient Conditions via Electrochemical Atomic Hydrogen Permeation

Ripepi, D. (author), Zaffaroni, R. (author), Schreuders, H. (author), Boshuizen, B. (author), Mulder, F.M. (author)

Direct electrochemical nitrogen reduction holds the promise of enabling the production of carbon emission-free ammonia, which is an important intermediate in the fertilizer industry and a potential green energy carrier. Here we show a strategy for ambient condition ammonia synthesis using a hydrogen permeable nickel membrane/electrode that...

journal article 2021

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Aliovalent Calcium Doping of Yttrium Oxyhydride Thin Films and Implications for Photochromism

Chaykina, D. (author), Usman, I.N. (author), Colombi, G. (author), Schreuders, H. (author), Tyburska-Pueschel, Beata (author), Wu, Z. (author), Eijt, S.W.H. (author), Bannenberg, L.J. (author), De Wijs, Gilles A. (author), Dam, B. (author)

To develop an understanding of the photochromic effect in rare-earth metal oxyhydride thin films (REH3-2xOx, here RE = Y), we explore the aliovalent doping of the RE cation. We prepared Ca-doped yttrium oxyhydride thin films ((CazY1-z)HxOy) by reactive magnetron cosputtering with Ca doping concentrations between 0 and 36 at. %. All of the...

journal article 2022

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Tantalum-Palladium: Hysteresis-Free Optical Hydrogen Sensor Over 7 Orders of Magnitude in Pressure with Sub-Second Response

Bannenberg, L.J. (author), Schreuders, H. (author), Dam, B. (author)

Hydrogen detection in a reliable, fast, and cost-effective manner is a prerequisite for the large-scale implementation of hydrogen in a green economy. Thin film Ta_1−yPd_y is presented as an effective optical sensing material with extremely wide sensing ranges covering at least 7 orders of magnitude in hydrogen pressure....

journal article 2021

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Hydrogenation Kinetics of Metal Hydride Catalytic Layers

Bannenberg, L.J. (author), Boshuizen, B. (author), Nugroho, Ferry Anggoro Ardy (author), Schreuders, H. (author)

Catalyzing capping layers on metal hydrides are employed to enhance the hydrogenation kinetics of metal hydride-based systems such as hydrogen sensors. Here, we use a novel experimental method to study the hydrogenation kinetics of catalyzing capping layers composed of several alloys of Pd and Au as well as Pt, Ni, and Ru, all with and without...

journal article 2021

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Suppression of the Phase Coexistence of the fcc-fct Transition in Hafnium-Hydride Thin Films

Bannenberg, L.J. (author), Schreuders, H. (author), Kim, H.J. (author), Sakaki, Kouji (author), Hayashi, Shigenobu (author), Ikeda, Kazutaka (author), Otomo, Toshiya (author), Dam, B. (author), Asano, Kohta (author)

Metal hydrides may play a paramount role in a future hydrogen economy. While most applications are based on nanostructured and confined materials, studies considering the structural response of these materials to hydrogen concentrate on bulk material. Here, using in situ in- and out-of-plane X-ray diffraction and reflectometry, we study the fcc ...

journal article 2021

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Oxyhydride Nature of Rare-Earth-Based Photochromic Thin Films

Cornelius, S. (author), Colombi, G. (author), Nafezarefi, F. (author), Schreuders, H. (author), Heller, R. (author), Munnik, Frans (author), Dam, B. (author)

Thin films of rare-earth (RE)-oxygen-hydrogen compounds prepared by reactive magnetron sputtering show a unique color-neutral photochromic effect at ambient conditions. While their optical properties have been studied extensively, the understanding of the relationship between photochromism, chemical composition, and structure is limited....

journal article 2019

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Structural and Optical Properties of Thin Film β-Ta upon Exposure to Hydrogen to Asses Its Applicability as Hydrogen Sensing Material

Bannenberg, L.J. (author), Verhoeff, D. (author), Jonckers Newton, Nick (author), Thijs, M.A. (author), Schreuders, H. (author)

Here, we study the structural and optical properties of tetragonal β-tantalum-sputtered thin films both ex situ and when exposed to hydrogen, with a focus on optical hydrogen sensing applications. Using optical transmission measurements, out-of-plane and in-plane X-ray diffraction, and X-ray and neutron reflectometry, we show that thin film β...

journal article 2024

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Large Polaron Conduction, Photoconductivity, and Photochromism in GdO_xH_3−2x Oxyhydride Thin Films

Colombi, G. (author), Boshuizen, B. (author), Chaykina, D. (author), Hsu, Y. (author), Schreuders, H. (author), Savenije, T.J. (author), Dam, B. (author)

At ambient conditions, rare-earth oxyhydride thin films show reversible photochromism and photoconductivity, while their mechanism and relation are still unclear. In this work, this question is explored with in situ time-resolved measurements of both optical and transport properties of Gd-based oxyhydride thin films. It is found that p-type...

journal article 2023

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Photochromic samarium oxyhydride thin films

Chaykina, D. (author), Colombi, G. (author), Schreuders, H. (author), Dam, B. (author)

Photochromism has been reported for several rare-earth (RE) metal oxyhydride thin films and is characterized by a reversible darkening of the sample when exposed to light with energy greater than its optical bandgap. Here, we extend the range of known photochromic RE-oxyhydrides to include samarium oxyhydrides. These SmH3−2xOx thin films are...

journal article 2023

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Impact of Nanostructuring on the Phase Behavior of Insertion Materials: The Hydrogenation Kinetics of a Magnesium Thin Film

Bannenberg, L.J. (author), Schreuders, H. (author), van Eijck, L. (author), Heringa, J.R. (author), Steinke, N.J. (author), Dalgliesh, R.M. (author), Dam, B. (author), Mulder, F.M. (author), van Well, A.A. (author)

Nanostructuring is widely applied in both battery and hydrogen materials to improve the performance of these materials as energy carriers. Nanostructuring changes the diffusion length as well as the thermodynamics of materials. We studied the impact of nanostructuring on the hydrogenation in a model system consisting of a thin film of magnesium...

journal article 2016