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 (1 paper)

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All Catalysts Energies Fuels Hydrogen Nanoenergy Advances

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19 pages, 2212 KiB  

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

Viewed by 610

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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