Hydrogen Energy Technologies, 3rd Edition

Topic Information

Dear Colleagues,

Hydrogen is becoming a major contributor to decarbonising modern economies across the globe. This Topic is a continuation of the previous successful Topic “Hydrogen Energy Technologies”.

The scene is set for hydrogen to be a major player in decarbonising our modern economy. This is happening simultaneously as, with the increasing level of investment driven by the demand side, the hydrogen industry is positioning itself towards mass production in the coming years, which would significantly drive down costs even faster than we have witnessed in the past few decades. In line with all these developments, research and innovation in this field are expanding at a rapid rate, and we in the Energies journal are committed to facilitating the communication of high-quality studies in this field. This Topic focuses on the latest fundamentals and applied innovations in the field of hydrogen energy, covering the production, storage, distribution, and utilisation of hydrogen energy in various stationary and mobile applications. The Topic includes, but is not limited to:

• Hydrogen production methods;
• Hydrogen distribution;
• Novel hydrogen storage solutions;
• Large-scale hydrogen-based energy storage;
• Integrated renewable hydrogen systems;
• Fuel cells and electrolysers;
• Hydrogen systems modelling and optimisation (including numerical and analytical modelling, computational chemistry, etc.);
• Hydrogen system components and design (including MEA, catalyst layer, electrodes, GDL, membrane, bipolar plates, flow field, etc.);
• Hydrogen system operation and optimisation;
• Hydrogen for stationary and mobile applications;
• Control solutions for hydrogen systems;
• Hydrogen system/component manufacturing;
• Advanced hydrogen materials;
• Thermofluid modelling of hydrogen systems;
• Hydrogen economy;
• Hydrogen safety.

Prof. Dr. Bahman Shabani
Dr. Mahesh Suryawanshi
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Catalysts catalysts	4.0	7.6	2011	16.6 Days	CHF 2200	Submit
Energies energies	3.2	7.3	2008	16.2 Days	CHF 2600	Submit
Fuels fuels	2.8	-	2020	24.7 Days	CHF 1200	Submit
Hydrogen hydrogen	3.0	5.5	2020	17.6 Days	CHF 1200	Submit
Nanoenergy Advances nanoenergyadv	-	9.0	2021	33.9 Days	CHF 1000	Submit

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Published Papers (2 papers)

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All Catalysts Energies Fuels Hydrogen Nanoenergy Advances

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43 pages, 7132 KB  

Open AccessArticle

Evaluating Techno-Economic Feasibility of Green Hydrogen Production Integrated with a Wave Energy Converter Device

by Sagar Kansara, Kourosh Rezanejad, Mohammad Jahanbakht and Diogo M. F. Santos

Fuels 2025, 6(4), 92; https://doi.org/10.3390/fuels6040092 - 4 Dec 2025

Viewed by 286

Abstract

The urgent need to address climate change has driven the exploration of sustainable energy solutions, with wave energy and green hydrogen emerging as prominent alternatives to traditional fossil fuels. This study examines the potential synergy between wave energy and hydrogen production, with a [...] Read more.

The urgent need to address climate change has driven the exploration of sustainable energy solutions, with wave energy and green hydrogen emerging as prominent alternatives to traditional fossil fuels. This study examines the potential synergy between wave energy and hydrogen production, with a focus on the economic viability of integrating these technologies. Through a detailed analysis of the levelised cost of electricity (LCOE) and the levelised cost of hydrogen (LCOH), this paper examines how coastal regions in Portugal and across Western Europe can harness wave energy to produce green hydrogen, a crucial component in the global energy transition. The techno-economic assessment accounts for capital and operational costs, energy efficiency, and lifetime performance to determine how design and location affect economic feasibility. Preliminary analysis indicates that regions with significant wave power potential present opportunities for competitive LCOE values, with some coastal areas achieving LCOE figures as low as 0.10 €/kWh. Additionally, the LCOH analysis reveals that among various storage methods, compressed gas hydrogen at 350 bar stands out as the most cost-effective option. This research highlights the transformative potential of wave energy-driven hydrogen production as a crucial solution for decarbonising the maritime sector. Future technological advancements and cost efficiencies are poised to overcome current economic barriers and accelerate the transition to a sustainable, low-carbon energy landscape. Full article

(This article belongs to the Topic Hydrogen Energy Technologies, 3rd Edition)

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19 pages, 2212 KB  

Open AccessArticle

Impact of the Anode Serpentine Channel Depth on the Performance of a Methanol Electrolysis Cell

by Vladimir L. Meca, Elena Posada, Antonio Villalba-Herreros, Rafael d’Amore-Domenech, Teresa J. Leo and Óscar Santiago

Hydrogen 2025, 6(3), 51; https://doi.org/10.3390/hydrogen6030051 - 19 Jul 2025

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Abstract

This work addresses for the first time the effect of anode serpentine channel depth on Methanol Electrolysis Cells (MECs) and Direct Methanol Fuel Cells (DMFCs) for improving performance of both devices. Anode plates with serpentine flow fields of 0.5 mm, 1.0 mm and [...] Read more.

This work addresses for the first time the effect of anode serpentine channel depth on Methanol Electrolysis Cells (MECs) and Direct Methanol Fuel Cells (DMFCs) for improving performance of both devices. Anode plates with serpentine flow fields of 0.5 mm, 1.0 mm and 1.5 mm depths are designed and tested in single-cells to compare their behaviour. Performance was evaluated through methanol crossover, polarization and power density curves. Results suggest shallower channels enhance mass transfer efficiency reducing MEC energy consumption for hydrogen production at 40 mA∙cm⁻² by 4.2%, but increasing methanol crossover by 30.3%. The findings of this study indicate 1.0 mm is the best depth among those studied for a MEC with 16 cm² of active area, while 0.5 mm is the best for a DMFC with the same area with an increase in peak power density of 14.2%. The difference in results for both devices is attributed to higher CO₂ production in the MEC due to its higher current density operation. This increased CO₂ production alters anode two-phase flow, partially hindering the methanol oxidation reaction with shallower channels. These findings underscore the critical role of channel depth in the efficiency of both MEC and DMFC single-cells. Full article

(This article belongs to the Topic Hydrogen Energy Technologies, 3rd Edition)

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