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Materials
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Emerging Materials and Technologies for Electrolysis of Seawater
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Emerging Materials and Technologies for Electrolysis of Seawater

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

Deadline for manuscript submissions: closed (20 September 2024) | Viewed by 1642

Special Issue Editors

Dr. Mingrui He

E-Mail Website
Guest Editor
Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Interests: solar water splitting; perovskite thin-film solar cells; tandem solar cells
Dr. Mahesh Suryawanshi

E-Mail Website
Guest Editor
School of Photovoltaic and Renewable Energy Engineering (SPREE), University of New South Wales, Sydney, NSW 2033, Australia
Interests: solar-driven hydrogen generation; electrocatalysis; nanocrystals/quantum dots; solution processed thin films; inorganic thin film solar cell
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are excited to announce a Special Issue on “Emerging Materials and Technologies for Water Electrolysis” in Materials. This issue aims to demonstrate the latest advancements and breakthroughs in the field of water electrolysis, focusing on novel materials and cutting-edge technologies. As the demand for clean and sustainable energy continues to rise, water electrolysis has emerged as a key method for hydrogen production. This Special Issue provides a platform for researchers and scientists to present their innovative work, exploring materials with enhanced catalytic properties, new electrode designs, and efficient electrolysis processes. We invite contributions that delve into the fundamental principles, experimental studies, and theoretical developments shaping the future of water electrolysis. By addressing these challenges and opportunities, we aim to accelerate the progress towards cost-effective and environmentally friendly hydrogen production methods, contributing to the broader goals of clean energy and a sustainable future.

Dr. Mingrui He
Dr. Mahesh Suryawanshi
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

  • electrochemical performance
  • heterogenous catalysis
  • electrocatalyst
  • nanocrystals

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Published Papers (1 paper)

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Research

16 pages, 3598 KiB  
Article
Low-Energy Desalination Techniques, Development of Capacitive Deionization Systems, and Utilization of Activated Carbon
by Gaber A. Elawadi
Materials 2024, 17(20), 5130; https://doi.org/10.3390/ma17205130 - 21 Oct 2024
Viewed by 1303
Abstract
Water desalination technology has emerged as a critical area of research, particularly with the advent of more cost-effective alternatives to conventional methods, such as reverse osmosis and thermal evaporation. Given the vital importance of water for life and the scarcity of potable water [...] Read more.
Water desalination technology has emerged as a critical area of research, particularly with the advent of more cost-effective alternatives to conventional methods, such as reverse osmosis and thermal evaporation. Given the vital importance of water for life and the scarcity of potable water for agriculture and livestock—especially in the Kingdom of Saudi Arabia—the capacitive deionization (CDI) method for removing salt from water has been highlighted as the most economical choice compared to other techniques. CDI applies a voltage difference across two porous electrodes to extract salt ions from saline water. This study will investigate water desalination using CDI, utilizing a compact DC power source under 5 volts and a standard current of 2 amperes. We will convert waste materials like sunflower seeds, peanut shells, and rice husks into activated carbon through carbonization and chemical activation to improve its pore structure. Critical parameters for desalination, including voltage, flow rate, and total dissolved solids (TDS) concentration, have been established. The initial TDS levels are set at 2000, 1500, 1000, and 500 ppm, with flow rates of 38.2, 16.8, and 9.5 mL/min across the different voltage settings of 2.5, 2, and 1.5 volts, applicable to both direct and inverse desalination methods. The efficiency at TDS concentrations of 2000, 1500, and 1000 ppm remains between 18% and 20% for up to 8 min. Our results indicate that the desalination process operates effectively at a TDS level of 750 ppm, achieving a maximum efficiency of 45% at a flow rate of 9.5 mL/min. At voltages of 2.5 V, 2 V, and 1.5 V, efficiencies at 3 min are attained with a constant flow rate of 9.5 mL/min and a TDS of 500 ppm, with the maximum desalination efficiency reaching 56%. Full article
(This article belongs to the Special Issue Emerging Materials and Technologies for Electrolysis of Seawater)
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