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Advances in Green Hydrogen Production: Electrolysis Technologies and Sustainable Integration

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Chemical Engineering and Technology".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 1567

Special Issue Editor


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Guest Editor
Department of Process Engineering & H2Ohm Institute for Applied Hydrogen Research, Technische Hochschule Nürnberg Georg Simon Ohm, Nürnberg, Germany
Interests: hydrogen production; hydrogen storage; CO2 conversion

Special Issue Information

Dear Colleagues, 

Transitioning towards the sustainable production of hydrogen is widely regarded as an integral step in the achievement of a net-zero economy. This Special Issue, “Advances in Green Hydrogen Production: Electrolysis Technologies and Sustainable Integration”, aims to explore and advance research on sustainable hydrogen production technologies. This issue focuses on the development of hydrogen as a clean and renewable energy source, emphasizing methods that minimize environmental impact and promote energy transition. Key topics include the following:

  • Sustainable Hydrogen Production: techniques such as electrolysis using renewable energy (solar, wind, etc.) to produce hydrogen with minimal greenhouse gas emissions while utilizing all by-products (heat, oxygen, etc.).
  •  Innovative and Efficient Technologies: research on improving the efficiency of current production methods, such as novel electrolysis concepts, photochemical, and bio-based processes, which can reduce carbon footprints.
  • Sustainable Materials and Catalysts: the investigation of eco-friendly materials and catalysts for hydrogen production, with a focus on raw material sustainability and lifecycle sustainability.
  • Techno-economic Analyses and Policy Frameworks: studies assessing economic viability, environmental benefits, and regulatory policies that drive sustainable hydrogen production.
  • Recycling of hydrogen production equipment: studies on recycling strategies for hydrogen production equipment (electrocatalysts, membranes, etc.).
  • Sustainable water supply: research on sustainable water supply for hydrogen production (seawater electrolysis, global and regional water resource management, wastewater utilization, etc.).

The purpose of the Special Issue is to provide a platform for interdisciplinary research that supports the global shift toward a low-carbon economy, addressing technological, environmental, and socio-economic aspects of hydrogen production for a sustainable future.

Prof. Dr. Ulrich Ulmer
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. Sustainability 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 2400 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
  • sustainability
  • life cycle assessment
  • hydrogen economy
  • electrolysis
  • green hydrogen
  • recycling
  • critical raw materials

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Published Papers (2 papers)

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Research

36 pages, 4259 KB  
Article
AI-Driven Catalyst Optimization in Methane Steam Reforming: A Hybrid HGBO–VIKOR and ConvLSTM Framework for Sustainable Hydrogen Production
by Haitham Al Qahtani
Sustainability 2026, 18(8), 3717; https://doi.org/10.3390/su18083717 - 9 Apr 2026
Viewed by 258
Abstract
Methane steam reforming (MSR) is the most widely used industrial process for hydrogen production. However, catalyst deactivation, carbon emissions, and energy inefficiencies limit its sustainable performance. Therefore, improving catalyst selection and optimizing operating conditions are essential for efficient hydrogen generation. This study proposes [...] Read more.
Methane steam reforming (MSR) is the most widely used industrial process for hydrogen production. However, catalyst deactivation, carbon emissions, and energy inefficiencies limit its sustainable performance. Therefore, improving catalyst selection and optimizing operating conditions are essential for efficient hydrogen generation. This study proposes an artificial intelligence-driven framework to optimize catalyst–condition combinations in MSR systems. The framework integrates Hybrid Golden Beetle Optimization (HGBO), VIKOR-based multi-criteria decision making, and Convolutional Long Short-Term Memory (ConvLSTM) modeling. HGBO explores the solution space and generates Pareto-optimal combinations of catalysts and operating conditions. These solutions are then ranked using the VIKOR method. The ranking considers hydrogen yield, methane conversion, energy efficiency, CO2 emissions, and catalyst lifetime. Economic feasibility is also included in the decision process. ConvLSTM modeling captures spatiotemporal relationships in catalyst and process data and predicts catalyst degradation under different operating conditions. The framework is evaluated using 620 experimentally reported MSR cases collected from the published literature within industrial ranges of 600–1200 °C, 1–40 bar, and H2O/CH4 ratios of 1–6. The optimized configurations achieve hydrogen yields up to 98.5%, energy efficiency approaching 99%, and reduced CO2 emissions of about 0.85 kg h−1. The results provide practical guidance for catalyst selection and process optimization in industrial hydrogen production systems. Full article
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16 pages, 522 KB  
Article
Exploring Hydrogen Technology Adoption in the German Energy Sector—A Dynamic Capabilities Perspective
by Daniel A. Gerhard, Katarzyna Kramarska and Ulrich Ulmer
Sustainability 2025, 17(23), 10545; https://doi.org/10.3390/su172310545 - 25 Nov 2025
Viewed by 807
Abstract
The transition to hydrogen is an important element of the sustainable transition of Germany’s industry. Regional German municipal utilities play a key role in this transition, as they are at the core position between local demand and regional supply. They play an important [...] Read more.
The transition to hydrogen is an important element of the sustainable transition of Germany’s industry. Regional German municipal utilities play a key role in this transition, as they are at the core position between local demand and regional supply. They play an important role when it comes to planned infrastructure development on the regional level. As energy infrastructure development is a long-term project, they need to deal with the hydrogen transition at a very early stage, including pilot projects, organizational changes, and business model adaptations. Yet, not much is known about how these entities organize the transition to hydrogen. Using a qualitative research approach, this study takes a dynamic-capability perspective to shed light on the hydrogen transition activities of German municipal utilities. Industry and other energy sector participants can learn from these insights on how to organize the transition path towards hydrogen. Findings indicate that strong partnerships play a key role in identifying new opportunities and that balancing risk and benefit is a key challenge when it comes to realizing new technological hydrogen projects. Full article
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