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Bleeker, J.J. (author), van Kasteren, Celine (author), van Ommen, J.R. (author), Vermaas, D.A. (author)To make green hydrogen more economically attractive, the energy losses in alkaline electrolysis need to be minimized while operating at high current densities (1 A cm<sup>−2</sup>). At these current densities the ohmic resistance and gas bubbles effects contribute largely to the energy losses. To mitigate the gas bubbles losses, we...journal article 2024
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Morales-Espana, G. (author), Hernández-Serna, Ricardo (author), Tejada-Arango, Diego A. (author), Weeda, Marcel (author)In this paper, we aim to analyse the impact of hydrogen production decarbonisation and electrification scenarios on the infrastructure development, generation mix, CO<sub>2</sub> emissions, and system costs of the European power system, considering the retrofit of the natural gas infrastructure. We define a reference scenario for the European...journal article 2024
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Boldrini, Annika (author), Koolen, Derck (author), Crijns-Graus, Wina (author), van den Broek, M.A. (author)The transition of the European iron and steel industry (ISI) towards low-carbon manufacturing is crucial for the European Union (EU)’s 2050 climate neutrality objective. One emerging solution is electrification by using hydrogen (H<sub>2</sub>) as iron ore reductant, which increases specific electricity use per tonne of steel up to 35 times...journal article 2024
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AbuHamra, Nada (author), Abunahla, H.N. (author), Ali, Ashraf (author), Waheed, Waqas (author), Mahmoud, Saleh T. (author), AlAzzam, Anas (author), Mohammed, Baker (author)In recent years, there has been a growing interest in investigating the potential of emerging memristor (MR) devices for gas sensing applications, particularly at room temperature. This article reports on a planar Au/reduced graphene oxide (rGO)/Au memristive hydrogen sensor, fabricated on a cost-effective cyclic olefin copolymer (COC)...journal article 2023
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Van Rheenen, E.S. (author), Padding, J.T. (author), Slootweg, J. C. (author), Visser, K. (author)Green hydrogen combined with PEM fuel cell systems is a viable option to meet the demand for alternative maritime fuels. However, hydrogen storage faces challenges, including low volumetric density, fire and explosion risks and transport challenges. We assessed over fifteen hydrogen carriers based on their maritime performance characteristics...journal article 2023
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Bannenberg, L.J. (author)Here, a method to suppress drift in intensity-modulated sensors is presented that preserves the advantages of such sensors including simplicity and low-cost components. This method is illustrated using metal hydride-based optical hydrogen sensors that can reliably, accurately, and quickly sense hydrogen across a large concentration range....journal article 2023
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Oikonomidis, Silvestros (author), Ramdin, M. (author), Moultos, O. (author), Bos, Albert (author), Vlugt, T.J.H. (author), Rahbari, A. (author)Due to the intermittency of renewable energy sources, alkaline water electrolyzers are typically operated at partial load compared to the nominal design value. It is well-known that gas crossover is dominant at low current densities leading to higher anodic hydrogen content and higher cathodic oxygen content in the separator tanks. High...journal article 2023
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Porcarelli, A. (author), Kruljević, B. (author), Langella, I. (author)NO<sub>x</sub> formation in premixed, highly-strained, pure hydrogen-air flamelets is investigated at lean conditions. Detailed-chemistry, one-dimensional and two-dimensional simulations are performed on a reactants-to-products configuration with varying applied strain rate. The results highlight for the first time for lean pure-hydrogen...journal article 2023
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Kapetanović, M. (author), Nunez, Alfredo (author), van Oort, N. (author), Goverde, R.M.P. (author)Hydrogen fuel cell multiple unit vehicles are acquiring a central role in the transition process towards carbon neutral trains operation in non-electrified regional railway networks. In addition to their primary role as a transport mean, these vehicles offer significant potential for applications in innovative concepts such as smart grids....journal article 2023
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Ramani, Balan (author), Van Der Stel, Jan (author), Jagers, Gerard (author), Buijs, W. (author)Coal is playing a major role as a reductant and as an energy source in the present world steel production due to its low cost and widespread distribution around the world. At the same time, being the largest contributor to global CO2 emissions, coal faces significant environmental challenges in terms of air pollution and global warming....journal article 2023
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Li, L. (author), Lukszo, Z. (author), Schmitz, J.E.J. (author)Hydrogen is becoming increasingly popular as a clean, secure, and affordable energy source for the future. This study develops an approach for designing a PV–battery–electrolyzer–fuel cell energy system that utilizes hydrogen as a long-term storage medium and battery as a short-term storage medium. The system is designed to supply load demand...journal article 2023
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Bartels, Emiel Aurelius (author), Pippia, T.M. (author), De Schutter, B.H.K. (author)Electrification of the heat network in buildings together with a rise in popularity of Electric Vehicles (EVs) will result in a need to make investments in the electrical energy infrastructure in order to prevent congestion. This paper discusses the influence of hydrogen in future smart microgrids on these investments. Moreover, smart control...journal article 2022
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Zhou, Jianmin (author), Ding, Lei (author), Shi, Mu (author), Lindeboom, R.E.F. (author), Cui, Changzheng (author)In the envisaged hydrogen economy, H<sub>2</sub> could be an interesting alternative electron donor for the denitrification of drinking water or wastewater. The main obstacle to engineering the hydrogenotrophic denitrification process is the low solubility of H<sub>2</sub> in water under atmospheric pressure, which limits denitrification rate...journal article 2022
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Yáñez, Édgar (author), Meerman, Hans (author), Ramirez, Andrea (author), Castillo, Édgar (author), Faaij, Andre (author)The oil and gas industry is responsible for 6% of total global CO2 emissions, from exploration to downstream petrochemical production and account for another 50% when including the use of its products. Thus, this industry has a significant role in realising the target of net “zero” CO2 emissions by 2070, essential to limit global warming to 1.8 ...journal article 2022
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Nebe, M. (author), Johman, A. (author), Braun, C. (author), van Campen, J.M.J.F. (author)Type IV composite pressure vessels represent the current state-of-the-art for compressed gaseous hydrogen storage in fuel cell electric vehicles. A combination of highly demanding safety regulations and the need for cost competitive solutions make the topic of CPVs particularly challenging. Given the elevated material price of carbon fiber,...journal article 2022
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Tsimpanogiannis, Ioannis N. (author), Moultos, O. (author)In this study, all available data from experiments and molecular simulations for the intra-diffusivities of H<sub>2</sub> and O<sub>2</sub> in H<sub>2</sub>O, and for the self-diffusivity of pure H<sub>2</sub>O are analyzed to examine the validity of the Stokes-Einstein relation. This analysis is motivated by the significant amount of work...journal article 2022
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Van Der Slikke, Deanne (author), Guerra, Karla (author), de Jong, W. (author), Haro, Pedro (author)Hydrogen is believed to be an important energy vector in the transition to a more sustainable future. However, there is a scarcity of relevant studies analysing the realistic potential for hydrogen production in specific European regions. In this study, the potential for biomass-derived hydrogen is comprehensively analysed considering a...journal article 2021
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Wang, X. (author), Shipurkar, U. (author), Haseltalab, A. (author), Polinder, H. (author), Claeys, Frans (author), Negenborn, R.R. (author)Ship hybridization has received some interests recently in order to achieve the emission target by 2050. However, designing and optimizing a hybrid propulsion system is a complicated problem. Sizing components and optimizing energy management control are coupled with each other. This paper applies a nested double-layer optimization...journal article 2021
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de Wagter, C. (author), Remes, B.D.W. (author), Smeur, E.J.J. (author), van Tienen, F. (author), Ruisink, Rick (author), van Hecke, K.G. (author), van der Horst, E. (author)Many Unmanned Air Vehicle (UAV) applications require vertical take-off and landing and very long-range capabilities. Fixed-wing aircraft need long runways to land, and electric energy is still a bottleneck for helicopters, which are not range efficient. In this paper, we introduce the NederDrone, a hybrid lift, hybrid energy hydrogen-powered...journal article 2021
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Delpierre, Mathieu (author), Quist, J.N. (author), Mertens, Jan (author), Prieur-Vernat, Anne (author), Cucurachi, Stefano (author)Two electrolysis technologies fed with renewable energy sources are promising for the production of CO<sub>2</sub>-free hydrogen and enabling the transition to a hydrogen society: Alkaline Electrolyte (AE) and Polymer Electrolyte Membrane (PEM). However, limited information exists on the potential environmental impacts of these promising...journal article 2021
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