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Advances in Sustainable Energy Materials and Devices
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Advances in Sustainable Energy Materials and Devices

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 4165

Special Issue Editors

Dr. Mansour Al Qubeissi

E-Mail Website
Guest Editor
Department of Mechanical Engineering, College of Engineering and Technology, University of Doha for Science and Technology, Doha 24449, Qatar
Interests: renewable energy; fuels; heating and evaporation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Awni Al-Otoom

E-Mail Website
Guest Editor
College of Engineering and Technology, University of Doha for Science and Technology, Doha 24449, Qatar
Interests: renewable energy; sustainability; alternative fuels; IOT applications

Special Issue Information

Dear Colleagues,

Modern human activities are strongly associated with energy availability. However, high demands for energy have exceeded conventional energy resources (such as fossil fuels) and increased pollution, leading to risks centered around greenhouse gas emissions and global poverty. Such challenges stimulate interests in sustainable and clean energy generation and storage systems, which can be envisaged and guided using a variety of materials, resources, and technologies. Some renewable energy harvesting can be designed and implemented using smart techniques and lightweight materials. For instance, batteries can be thermally managed for clean energy storage and smart organic materials can be used for sustainability. Our Special Issue will showcase investigations centered around the development and bridging of sustainable energy technologies. Original research findings in this field will be reviewed and organized to shed light on the benefits of these recent developments, and to provide a critical analysis of current state-of-the-art technologies. All articles featured in this Special Issue will be free to view to maximize readability and benefit the public.

Dr. Mansour Al Qubeissi
Prof. Dr. Awni Al-Otoom
Guest Editors

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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Materials 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

  • clean technology
  • green composites
  • renewable energy
  • smart material
  • sustainability

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

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10 pages, 3664 KiB  
Article
High Performance of Mn2O3 Electrodes for Hydrogen Evolution Using Natural Bischofite Salt from Atacama Desert: A Novel Application for Solar Saline Water Splitting
by Felipe M. Galleguillos-Madrid, Sebastian Salazar-Avalos, Edward Fuentealba, Susana Leiva-Guajardo, Luis Cáceres, Carlos Portillo, Felipe Sepúlveda, Iván Brito, José Ángel Cobos-Murcia, Omar F. Rojas-Moreno, Víctor Jimenez-Arevalo, Eduardo Schott and Alvaro Soliz
Materials 2024, 17(20), 5129; https://doi.org/10.3390/ma17205129 - 21 Oct 2024
Viewed by 786
Abstract
Solar saline water splitting is a promising approach to sustainable hydrogen production, harnessing abundant solar energy and the availability of brine resources, especially in the Atacama Desert. Bischofite salt (MgCl2·6H2O) has garnered significant attention due to its wide range [...] Read more.
Solar saline water splitting is a promising approach to sustainable hydrogen production, harnessing abundant solar energy and the availability of brine resources, especially in the Atacama Desert. Bischofite salt (MgCl2·6H2O) has garnered significant attention due to its wide range of industrial applications. Efficient hydrogen production in arid or hyper arid locations using bischofite solutions is a novel and revolutionary idea. This work studied the electrochemical performance of Mn2O3 electrodes using a superposition model based on mixed potential theory and evaluated the superficial performance of this electrode in contact with a 0.5 M bischofite salt solution focusing on the hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) that occur during saline water splitting. The application of the non-linear superposition model provides valuable electrochemical kinetic parameters that complement the understanding of Mn2O3, this being one of the novelties of this work. Full article
(This article belongs to the Special Issue Advances in Sustainable Energy Materials and Devices)
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25 pages, 7394 KiB  
Article
Experimental and Numerical Investigation of Macroencapsulated Phase Change Materials for Thermal Energy Storage
by Busra Arslan and Mustafa Ilbas
Materials 2024, 17(12), 2804; https://doi.org/10.3390/ma17122804 - 8 Jun 2024
Cited by 1 | Viewed by 1222
Abstract
Among the different types of phase change materials, paraffin is known to be the most widely used type due to its advantages. However, paraffin’s low thermal conductivity, its limited operating temperature range, and leakage and stabilization problems are the main barriers to its [...] Read more.
Among the different types of phase change materials, paraffin is known to be the most widely used type due to its advantages. However, paraffin’s low thermal conductivity, its limited operating temperature range, and leakage and stabilization problems are the main barriers to its use in applications. In this research, a thermal energy storage unit (TESU) was designed using a cylindrical macroencapsulation technique to minimize these problems. Experimental and numerical analyses of the storage unit using a tubular heat exchanger were carried out. The Ansys 18.2-Fluent software was used for the numerical analysis. Two types of paraffins with different thermophysical properties were used in the TESU, including both encapsulated and non-encapsulated forms, and their thermal energy storage performances were compared. The influence of the heat transfer fluid (HTF) inlet conditions on the charging performance (melting) was investigated. The findings demonstrated that the heat transfer rate is highly influenced by the HTF intake temperature. When the effect of paraffin encapsulation on heat transfer was examined, a significant decrease in the total melting time was observed as the heat transfer surface and thermal conductivity increased. Therefore, the energy stored simultaneously increased by 60.5% with the encapsulation of paraffin-1 (melting temperature range of 52.9–60.4 °C) and by 50.7% with the encapsulation of paraffin-2 (melting temperature range of 32.2–46.1 °C), thus increasing the charging rate. Full article
(This article belongs to the Special Issue Advances in Sustainable Energy Materials and Devices)
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Review

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22 pages, 3931 KiB  
Review
Securing Rare Earth Permanent Magnet Needs for Sustainable Energy Initiatives
by Dan-Cristian Popa and Loránd Szabó
Materials 2024, 17(22), 5442; https://doi.org/10.3390/ma17225442 - 7 Nov 2024
Viewed by 1446
Abstract
Rare earth permanent magnets are vital in various sectors, including renewable energy conversion, where they are widely used in permanent magnet generators. However, the global supply and availability of these materials present significant risks, and their mining and processing have raised serious environmental [...] Read more.
Rare earth permanent magnets are vital in various sectors, including renewable energy conversion, where they are widely used in permanent magnet generators. However, the global supply and availability of these materials present significant risks, and their mining and processing have raised serious environmental concerns. This paper reviews the necessary legislative, economic, and technological measures that must be implemented to address these issues. While it may not be feasible to eliminate the risks associated with the availability of rare earth materials, researchers in the field of electrical generators can play a crucial role in significantly reducing the demand for newly mined and processed such materials, thereby mitigating the negative environmental impacts of their extraction and production. Full article
(This article belongs to the Special Issue Advances in Sustainable Energy Materials and Devices)
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