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Catalysts
Special Issues
Editorial Board Members’ Collection Series: Electrocatalysis - Water Splitting
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Editorial Board Members’ Collection Series: Electrocatalysis - Water Splitting

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Electrocatalysis".

Deadline for manuscript submissions: closed (30 July 2023) | Viewed by 3090

Special Issue Editors

Dr. Yun Wang

E-Mail Website
Guest Editor
Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Southport, QLD, Australia
Interests: computational catalysis; low-dimensional materials; electrocatalysis; electrode–electrolyte interface
Special Issues, Collections and Topics in MDPI journals
Dr. Chong-Yong Lee

E-Mail Website
Guest Editor
Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
Interests: electrocatalysis; electrochemical water splitting; electrochemical CO2 reduction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to announce this collection titled “Editorial Board Members’ Collection Series: Electrocatalysis - Water Splitting”. This Special Issue will be a collection of articles by researchers invited by the editorial board members.

The aim is to provide a venue for networking and communication between scholars in the field of Electrocatalytic Water Splitting. All articles will be published with full open access after peer review.

Dr. Yun Wang
Dr. Chong-Yong Lee
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. Catalysts is an international peer-reviewed open access monthly 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 2700 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

  • electrocatalytic water splitting
  • electrocatalysts design
  • water oxidation
  • hydrogen evolution reaction
  • seawater splitting

Published Papers (2 papers)

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Research

15 pages, 3800 KiB  
Article
Enhancing Nickel-Iron Gas Diffusion Electrodes for Oxygen Evolution in Alkaline Water Electrolysis
by Marcel Kaiser, Felix Gäde, Jörn Brauns and Thomas Turek
Catalysts 2023, 13(9), 1266; https://doi.org/10.3390/catal13091266 - 01 Sep 2023
Viewed by 1048
Abstract
Alkaline water electrolysis is a well-known technology for sustainable hydrogen production powered by renewable energy. The use of gas diffusion electrodes (GDEs) based on nonprecious materials eliminates the need for an anolyte cycle, leading to a cost reduction of the electrolysis process. In [...] Read more.
Alkaline water electrolysis is a well-known technology for sustainable hydrogen production powered by renewable energy. The use of gas diffusion electrodes (GDEs) based on nonprecious materials eliminates the need for an anolyte cycle, leading to a cost reduction of the electrolysis process. In this work, the production of GDEs made of nickel particles and different iron precursors is investigated for the improvement of the oxygen evolution reaction. The GDE production followed an established four-step process: dispersing, spraying, hot pressing, and sintering. Physical characterization comprised the determination of the pore size distribution by capillary flow porometry and mercury porosimetry, as well as BET surface area measurements. Electrochemical characterization through linear sweep voltammetry and EIS measurements was performed in a custom half cell. The results show that the overall performance of the GDE based on low-cost iron compounds was comparable to existing GDE formulations, while improvements could be achieved regarding the overpotential in the kinetic region. Nevertheless, future investigations concerning the gas purity and long-term stability of the GDEs will be the next steps of the electrode development. Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: Electrocatalysis - Water Splitting)
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14 pages, 5011 KiB  
Article
Ultrafast and Facile Synthesis of (Ni/Fe/Mo)OOH on Ni Foam for Oxygen Evolution Reaction in Seawater Electrolysis
by Li Xu, Yuxuan Dong, Wei Xu and Wen Zhang
Catalysts 2023, 13(6), 924; https://doi.org/10.3390/catal13060924 - 24 May 2023
Cited by 3 | Viewed by 1747
Abstract
Preparing high-performance electrocatalysts for oxygen evolution reaction (OER)s with high durability for seawater electrolysis is of great significance. Herein, reported a one-step solution-immersion synthesis strategy to prepare a (Ni/Fe/Mo)OOH catalyst on a nickel foam substrate that can be accomplished in 5 min under [...] Read more.
Preparing high-performance electrocatalysts for oxygen evolution reaction (OER)s with high durability for seawater electrolysis is of great significance. Herein, reported a one-step solution-immersion synthesis strategy to prepare a (Ni/Fe/Mo)OOH catalyst on a nickel foam substrate that can be accomplished in 5 min under ambient temperature and pressure. The unique cluster morphology of the catalyst on the surface of electrodes effectively increases the number of active sites, and the presence of Mo, Ni, and Fe in the catalyst enhances the activity of the OER. In the electrolyte solution (1 mol/L NaOH), the electrode exhibited low OER overpotentials of 265 mV, 286 mV, and 332 mV at currents of 100 mA·cm−2, 400 mA·cm−2, and 1000 mA·cm−2, respectively. This electrode also demonstrated excellent performance in seawater splitting, and the overpotentials at currents of 100 mA·cm−2, 400 mA·cm−2, and 1000 mA·cm−2 in alkaline seawater environments were 330 mV, 416 mV, and 514 mV, respectively. In the 72 h durability test, the voltage increase was within 10 mV, exhibiting the excellent durability of the (Ni/Fe/Mo)OOH electrocatalyst. Therefore, the electrode developed here shows potential in the application of seawater electrolysis for hydrogen generation. Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: Electrocatalysis - Water Splitting)
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