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Frontiers in Electrocatalysis: Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution...
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Frontiers in Electrocatalysis: Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

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

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 15156

Special Issue Editors

Dr. Chao Su

E-Mail Website1 Website2
Guest Editor
School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212100, China
Interests: solid oxide fuel cells; electrochemical catalysis (oxygen reduction/evolution reactions); metal–air batteries
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Meng Ni

E-Mail Website
Guest Editor
Department of Building and Real Estate, Research Institute for Sustainable Urban Development (RISUD), The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Interests: fuel cells; rechargeable metal–air batteries; electrochemical water-splitting; electrochemical systems for low grade waste heat utilization
Prof. Dr. Wei Zhou

E-Mail Website
Guest Editor
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
Interests: fuel cells; oxygen reduction reaction; oxygen evolution reaction; hydrogen evolution reaction; metal-air batteries

Special Issue Information

Dear Colleagues, 

This is a Special Issue on the low-temperature (or room-temperature) electrocatalysis, including oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The Special Issue will include but is not limited to research into the design and development of new electrocatalysts for ORR, OER, and/or HER in alkaline and/or acid conditions, as well as their applications in real devices, such as fuel cells, metal–air batteries, water splitting devices and so on. Particular focus is on the discovery of non-precious metal catalysts that possess high performance and excellent stability. Both theoretical calculations and experimental results are of interest. In addition, we highly encourage submissions of review papers that summarize recent advances in electrocatalysts for these reactions.

Dr. Chao Su
Prof. Dr. Meng Ni
Prof. Dr. Wei Zhou
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

  • low temperature electrolysis
  • electrocatalysts
  • oxygen reduction reaction
  • oxygen evolution reaction
  • hydrogen evolution reaction
  • fuel cells
  • metal–air batteries
  • water splitting

Published Papers (3 papers)

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Research

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12 pages, 3811 KiB  
Article
An Effective Strategy to Enhance the Electrocatalytic Activity of Ruddlesden−Popper Oxides Sr3Fe2O7−δ Electrodes for Solid Oxide Fuel Cells
by Longsheng Peng, Qiang Li, Liping Sun and Hui Zhao
Catalysts 2021, 11(11), 1400; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11111400 - 18 Nov 2021
Cited by 7 | Viewed by 2053
Abstract
The target of this work is to develop advanced electrode materials with excellent performance compared to conventional cathodes. Cobalt-free Ruddlesden−Popper oxides Sr3Fe2−xCuxO7−δ (SFCx, x = 0, 0.1, 0.2) were successfully synthesized and [...] Read more.
The target of this work is to develop advanced electrode materials with excellent performance compared to conventional cathodes. Cobalt-free Ruddlesden−Popper oxides Sr3Fe2−xCuxO7−δ (SFCx, x = 0, 0.1, 0.2) were successfully synthesized and assessed as cathode materials for solid oxide fuel cells (SOFCs). Herein, a Cu-doping strategy is shown to increase the electrical conductivity and improve the electrochemical performance of the pristine Sr3Fe2O7−δ. Among all the cathode materials, the Sr3Fe1.9Cu0.1O7−δ (SFC10) cathode exhibits the best electrocatalytic activity for oxygen reduction reaction (ORR). The polarization resistance is 0.11 Ω cm2 and the peak power density of the single-cell with an SFC10 cathode reaches 955 mW cm−2 at 700 °C, a measurement comparable to cobalt-based electrodes. The excellent performance is owed to favorable oxygen surface exchange capabilities and larger oxygen vacancy concentrations at elevated temperatures. Moreover, the electrochemical impedance spectra and distribution of relaxation time results indicate that the charge transfer process at the triple-phase boundary is the rate-limiting step for ORR on the electrode. This work provides an effective strategy for designing novel cathode electrocatalysts for SOFCs. Full article
(This article belongs to the Special Issue Frontiers in Electrocatalysis: Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions)
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Review

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20 pages, 2661 KiB  
Review
Research Progress in ZIF-8 Derived Single Atomic Catalysts for Oxygen Reduction Reaction
by Siqi Shen, Yuanyuan Sun, Hao Sun, Yuepeng Pang, Shuixin Xia, Taiqiang Chen, Shiyou Zheng and Tao Yuan
Catalysts 2022, 12(5), 525; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12050525 - 07 May 2022
Cited by 14 | Viewed by 4620
Abstract
Transition metal (TM) single atomic catalysts (MSAC-N-C) derived from doped zeolite imidazolate frameworks (ZIF-8) are considered attractive oxygen reduction reaction (ORR) catalysts for fuel cells and metal-air batteries due to their advantages of high specific surface area, more active catalytic sites, [...] Read more.
Transition metal (TM) single atomic catalysts (MSAC-N-C) derived from doped zeolite imidazolate frameworks (ZIF-8) are considered attractive oxygen reduction reaction (ORR) catalysts for fuel cells and metal-air batteries due to their advantages of high specific surface area, more active catalytic sites, adjustable pore size, and coordination topology features. This review provides an updated overview of the latest advances of MSAC-N-C catalysts derived from ZIF-8 precursors in ORR electrocatalysis. Particularly, some key challenges, including coordination environments regulation of catalysis center in MSAC-N-C, the active sites loading optimization and synergistic effects between TM nanoclusters/nanoparticles and the single atoms on MSAC-N-C catalysis activity, as well as their adaptability in various devices, are summarized for improving future development and application of MSAC-N-C catalysts. In addition, this review puts forward future research directions, making it play a better role in ORR catalysis for fuel cells and metal air batteries. Full article
(This article belongs to the Special Issue Frontiers in Electrocatalysis: Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions)
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17 pages, 3899 KiB  
Review
High Selectivity Electrocatalysts for Oxygen Evolution Reaction and Anti-Chlorine Corrosion Strategies in Seawater Splitting
by Shanshan Jiang, Yang Liu, Hao Qiu, Chao Su and Zongping Shao
Catalysts 2022, 12(3), 261; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12030261 - 25 Feb 2022
Cited by 35 | Viewed by 7576
Abstract
Seawater is one of the most abundant and clean hydrogen atom resources on our planet, so hydrogen production from seawater splitting has notable advantages. Direct electrolysis of seawater would not be in competition with growing demands for pure water. Using green electricity generated [...] Read more.
Seawater is one of the most abundant and clean hydrogen atom resources on our planet, so hydrogen production from seawater splitting has notable advantages. Direct electrolysis of seawater would not be in competition with growing demands for pure water. Using green electricity generated from renewable sources (e.g., solar, tidal, and wind energies), the direct electrolytic splitting of seawater into hydrogen and oxygen is a potentially attractive technology under the framework of carbon-neutral energy production. High selectivity and efficiency, as well as stable electrocatalysts, are prerequisites to facilitate the practical applications of seawater splitting. Even though the oxygen evolution reaction (OER) is thermodynamically favorable, the most desirable reaction process, the four-electron reaction, exhibits a high energy barrier. Furthermore, due to the presence of a high concentration of chloride ions (Cl−) in seawater, chlorine evolution reactions involving two electrons are more competitive. Therefore, intensive research efforts have been devoted to optimizing the design and construction of highly efficient and anticorrosive OER electrocatalysts. Based on this, in this review, we summarize the progress of recent research in advanced electrocatalysts for seawater splitting, with an emphasis on their remarkable OER selectivity and distinguished anti-chlorine corrosion performance, including the recent progress in seawater OER electrocatalysts with their corresponding optimized strategies. The future perspectives for the development of seawater-splitting electrocatalysts are also demonstrated. Full article
(This article belongs to the Special Issue Frontiers in Electrocatalysis: Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions)
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