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Advances in Photovoltaic and Renewable Energy Engineering

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (24 July 2024) | Viewed by 2120

Special Issue Editors


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Guest Editor
Institute for Microelectronics and Microsystems (IMM), National Research Council (CNR), Strada VIII 5, 95121 Catania, Italy
Interests: semiconductor devices; electronic materials; photovoltaics; high performance solar cells; phototodetectors; MOS devices
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Institute for Microelectronics and Microsystems (IMM), National Research Council (CNR), Strada VIII 5, 95121 Catania, Italy
Interests: design, integration, and characterization of materials for electronic devices; materials and devices for solar fuel production

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Guest Editor
Dipartimento di Fisica e Astronomia, Università di Catania & IMM-CNR, Via S. Sofia 64, 95123 Catania, Italy
Interests: advanced materials for photovoltaics; TCO; semiconductors; nanostructures; thin films
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Research on renewables is a primary direction of science and technology to find solutions to mitigate climate change. General trends are evident since solar energy is the most abundant renewable source, and electrification in automotive and mobility is becoming widely accepted. A widespread utilization of this resource requires the development of suitable energy vectors that are able to mitigate the intrinsic unpredictable availability of renewable energy sources. More and more attention is therefore focusing on the possibility to transform the sun’s energy into carbon-free molecules, like H2, NH3, etc., to produce climate neutral solar fuels.

On such premises, this Special Issue will focus on the recent developments of new processes, materials, and devices for high-performance photovoltaics and the synthesis and management of solar fuels. Topics of interest for publication include, but are not limited to:

  • Sustainable materials for PV and solar fuel technology;
  • High-performance solar cells;
  • High-performance photovoltaic modules;
  • Solar fuels;
  • Photoelectrochemical cells;
  • Solar-to-hydrogen systems;
  • Solar-to-ammonia systems;
  • Hydrogen storage;
  • Interaction between electrochemical systems and fluctuating renewables;
  • Electronics for photovoltaic modules.

Dr. Salvatore Lombardo
Dr. Stefania Maria Serena Privitera
Prof. Dr. Antonio Terrasi
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. 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

  • solar cells
  • photovoltaic modules
  • photoelectrochemical cells
  • solar green hydrogen
  • green ammonia

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Published Papers (2 papers)

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Research

18 pages, 2799 KiB  
Article
Power Factor Analysis of Grid-Connected Solar Inverter under Different Irradiance Levels throughout the Day
by Suleyman Adak
Energies 2024, 17(15), 3632; https://doi.org/10.3390/en17153632 - 24 Jul 2024
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Abstract
The power factor (PF) plays a crucial role in determining the quality of energy produced by grid-connected photovoltaic (PV) systems. When irradiation levels are high, typically during peak sunlight hours, the PV panels generate more electricity. In this scenario, the PF tends to [...] Read more.
The power factor (PF) plays a crucial role in determining the quality of energy produced by grid-connected photovoltaic (PV) systems. When irradiation levels are high, typically during peak sunlight hours, the PV panels generate more electricity. In this scenario, the PF tends to be higher because the real power output closely matches the apparent power drawn from the grid. Whereas, when irradiation levels are low, such as during cloudy weather or nighttime, the PV panels produce less electricity. In these conditions, the power factor may decrease because the real power output diminishes compared to the apparent power drawn from the grid. This could be due to reduced efficiency or increased reactive power flow. PF decreases linearly at solar irradiance values lower than 220 (W/m2). At the same time, it approaches unity at higher solar irradiance values than 220 (W/m2). In this study, the variation of the power coefficient of the grid-connected PV solar system depending on solar irradiation was modeled and analyzed using MATLAB/Simulink 41016490. The analytical expression of the power factor depending on the change in solar irradiation was found using the curve fitting method. Full article
(This article belongs to the Special Issue Advances in Photovoltaic and Renewable Energy Engineering)
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8 pages, 1349 KiB  
Article
Combined Effect of Pressure and Temperature on Nitrogen Reduction Reaction in Water
by Giuseppe Tranchida, Rachela G. Milazzo, Salvatore A. Lombardo and Stefania M. S. Privitera
Energies 2024, 17(12), 2963; https://doi.org/10.3390/en17122963 - 17 Jun 2024
Viewed by 768
Abstract
The synthesis of ammonia starting from nitrogen and using electrochemical processes is considered an interesting strategy to produce ammonia in a sustainable way. However, it requires not only the development of efficient catalysts for nitrogen reduction but also the optimization of the operating [...] Read more.
The synthesis of ammonia starting from nitrogen and using electrochemical processes is considered an interesting strategy to produce ammonia in a sustainable way. However, it requires not only the development of efficient catalysts for nitrogen reduction but also the optimization of the operating conditions of the employed electrochemical devices. In this work, we optimize the kinetics and the thermodynamics of the electrocatalytic nitrogen reduction reaction in water by developing a pressurized H-cell that may operate at temperatures up to 80 °C. Ni foam with low Au loading (0.08 mg cm−2) has been adopted as a catalyst at the cathode. Ammonia has been produced during chronoamperometry experiments in a saturated N2 atmosphere and measured by the indophenol blue method. The effect of voltage, temperature, and pressure has been studied. The nitrogen reduction experiments have been repeated under saturated Ar. To remove contributions due to environmental contamination, we determined the net value as the difference between the produced ammonia in N2 and in Ar. The ammonia yield increases by increasing the temperature and the pressure. The best results have been obtained by using the combined effects of temperature and pressure. Operating at 5 bar of saturated N2 and 75 °C, a production rate of 6.73 μg h−1·cm−2 has been obtained, a value corresponding to a 5-fold enhancement, compared to that obtained under ambient conditions and room temperature. Full article
(This article belongs to the Special Issue Advances in Photovoltaic and Renewable Energy Engineering)
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