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Advances in Green Hydrogen Production and Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A5: Hydrogen Energy".

Deadline for manuscript submissions: 30 July 2026 | Viewed by 1447

Special Issue Editor


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Guest Editor
School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Interests: nanomaterials; catalysis; green hydrogen; renewable energy; water treatment

Special Issue Information

Dear Colleagues,

One of the most prevalent problems facing society today is the need for reliable sources of energy without the disadvantages of finite supply and environmental impairment. Hydrogen (H2) is one of the more promising solutions to this enduring challenge, as it is a fuel with a very-high energy density, pollution-free combustion, and, more importantly, “green” methods available for its production that are based on renewable energy sources (e.g., the use of electricity or light from renewable sources for water splitting). “Green hydrogen production” is a key component in sustainable future planning (especially with seawater splitting), along with the promising applications that exist for this fuel, such as hydrogen combustion technologies, fuel cells (which can produce electricity without the need for combustion and without undesirable by-products), and others. Such technologies can be utilized for transportation (commercial vehicles, marine transportation, and aviation), distributed electricity/heating and energy storage applications. Therefore, a renewable chain can be established, starting with freely available and theoretically unlimited sources, leading to the production of a potent environmentally friendly fuel (aka “green” H2), and concluding with its utilization in necessary applications, removing the dependence on finite and toxic energy sources.

The aim of this Special Issue is to gather and present the most recent advances that concern “green” methods of hydrogen production and the subsequent applications of the produced fuel, covering all stages of this path from the design of the production methods to the efficiency of the hydrogen-utilizing applications.

Topics of interest in this Special Issue include, but are not limited to, the following:

  • All aspects of the chemistry behind water splitting, especially regarding the novel route of utilizing seawater as a source.
  • Electrochemistry (and photo-electrochemistry) for water splitting powered by natural sources.
  • Light-activated processes: photolysis and photocatalysis for aqueous hydrogen evolution reactions using natural (or artificial) light.
  • Thermo-chemical techniques for water splitting (including solar–thermal methods).
  • Biological processes of hydrogen generation (biophotolysis, photofermentation, etc.).
  • Multi-component green hydrogen production systems (e.g., solar-powered photovoltaics as an electricity source for hydrogen production systems).
  • The role of materials in water splitting via different technologies—from electrolytic electrode films to photocatalytic nano-powders.
  • Hydrogen fuelling stations (HFSs): design and optimization of integrated hydrogen production, storage, and fuel cell systems.
  • Hydrogen combustion (in internal combustion engines of either type, gas turbines, etc.) for energy production and other applications.
  • Transportation using hydrogen as a fuel (from commercial cars to airplanes).
  • Hydrogen fuel cells: design and optimization.
  • Electricity distribution through green hydrogen-powered systems.
  • Computational approaches to system design for hydrogen production technologies and subsequent applications, as well as related material synthesis methods.

Dr. George V. Belessiotis
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrogen production
  • renewable energy
  • green hydrogen
  • water splitting
  • electrolysis
  • electrocatalysis
  • photocatalysis
  • fuel cells
  • hydrogen applications
  • sustainable energy

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Published Papers (1 paper)

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Research

20 pages, 3611 KB  
Article
Green Hydrogen Production Assessment via Integrated Photovoltaic–Electrolyzer Modeling Framework
by Abdullah Alrasheedi, Mousa Marzband and Abdullah Abusorrah
Energies 2026, 19(5), 1316; https://doi.org/10.3390/en19051316 - 5 Mar 2026
Viewed by 766
Abstract
This study examines the impact of photovoltaic (PV) modeling fidelity utilizing single-diode (SDM), double-diode (DDM), and triple-diode (TDM) representations on the precision of hydrogen production (H2P) estimates when integrated with various electrolyzer technologies, specifically proton exchange membrane (PEM), alkaline (AEL), and [...] Read more.
This study examines the impact of photovoltaic (PV) modeling fidelity utilizing single-diode (SDM), double-diode (DDM), and triple-diode (TDM) representations on the precision of hydrogen production (H2P) estimates when integrated with various electrolyzer technologies, specifically proton exchange membrane (PEM), alkaline (AEL), and solid oxide electrolysis cells (SOECs). Precise evaluation of solar-powered green hydrogen (H2) systems necessitated a dependable estimate of PV power under authentic working circumstances. Hourly site-specific irradiance and ambient temperature (Ta) data for Riyadh, Saudi Arabia, were used to calculate PV power outputs, which were then sent to physically based electrolyzer models regulated by electrochemical voltage relationships and Faraday’s law. The findings indicate that while all PV models display the same seasonal patterns, SDM somewhat overestimates yearly PV energy in comparison to DDM and TDM, with relative errors around 0.03%. These discrepancies somewhat affect H2 yield estimations but do not change the relative ranking of electrolyzer technology. Among the assessed options, SOEC consistently produced the highest H2 output, generating approximately 21.8% more H2 than PEM and 9.1% more than AEL, with annual yields of 62.46–62.47 g for PEM, 69.70–69.71 g for AEL, and 76.04–76.05 g for SOEC across the SDM, DDM, and TDM frameworks under equivalent solar power inputs. The findings indicate that the selection of electrolyzer technology significantly impacts H2P more than the choice of a PV model, while high-fidelity PV modeling is crucial for a physically realistic and precise system-level assessment of integrated PV-H2 energy systems. Full article
(This article belongs to the Special Issue Advances in Green Hydrogen Production and Applications)
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