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Catalysts
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Non-novel Metal Electrocatalytic Materials for Clean Energy
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Non-novel Metal Electrocatalytic Materials for Clean Energy

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

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1794

Special Issue Editor

Prof. Dr. Xiang Wu

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
Interests: electrocatalysis; photocatalysis; metal-ion battery; zinc-ion battery; supercapacitor; energy storage and conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The excessive depletion of traditional fossil fuels and accompanying environmental crisis are affecting the global community on a large scale, making the exploration of alternative, clean, sustainable energy resources an urgent issue. Hydrogen energy has considerable potential applications due to its high energy density and clean combustion products. However, the industrial production of hydrogen results in high CO2 emissions and high energy consumption through conventional technologies. However, electrochemical water splitting has been widely recognized as the most promising strategy to produce sustainable hydrogen energy. It uses the two-electron hydrogen evolution reaction (HER) at the cathode and the four-electron oxygen evolution reaction (OER) at the anode. However, the sluggish kinetics of the anode associated with multistep proton-coupled electron transfer has been recognized as the main obstacle preventing the reduction in the required overpotentials and the guarantee of long-term performance. Therefore, it is vital to design high-efficiency electrocatalysts as substitutes to noble metal catalysts.

This Special Issue focuses on (but is not limited to) the following topics:

  • Novel hybrid materials for electrocatalysis;
  • Design and synthesis of bifunctional electrocatalysts;
  • Operando characterization of electrocatalysts;
  • Theory calculation of electrocatalysts;
  • Catalysis mechanisms of electrocatalysts.

If you would like to submit papers to this Special Issue or have any questions, please contact the in-house editor, Ms. Rita Lin ([email protected]).

Prof. Dr. Xiang Wu
Guest Editor

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

  • electrocatalysis
  • hydrogen evolution reaction
  • oxygen evolution reaction
  • catalysis mechanisms
  • overall water splitting

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Published Papers (2 papers)

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Research

12 pages, 3975 KiB  
Article
Facile Synthesis of Ni(OH)2 through Low-Temperature N-Doping for Efficient Hydrogen Evolution
by Zi-Zhang Liu, Ruo-Yao Fan, Ning Yu, Ya-Nan Zhou, Xin-Yu Zhang, Bin Dong and Zi-Feng Yan
Catalysts 2024, 14(8), 534; https://doi.org/10.3390/catal14080534 - 16 Aug 2024
Viewed by 503
Abstract
Nickel hydroxide is a potentially cheap non-precious metal catalytic material for alkaline hydrogen evolution reactions (HERs). Herein, a nickel form (NF)-based nitrogen-modified nickel hydroxide (N-Ni(OH)2/NF) with interlaced two-dimensional (2D) nanosheet structures was synthesized by a simple one-step ammonia vapor-phase hydrothermal method [...] Read more.
Nickel hydroxide is a potentially cheap non-precious metal catalytic material for alkaline hydrogen evolution reactions (HERs). Herein, a nickel form (NF)-based nitrogen-modified nickel hydroxide (N-Ni(OH)2/NF) with interlaced two-dimensional (2D) nanosheet structures was synthesized by a simple one-step ammonia vapor-phase hydrothermal method for efficient electrocatalytic HERs. The effect of the reaction temperature of the catalyst preparation on the HERs’ performance was studied in detail. The HER activity of N-Ni(OH)2/NF is enhanced by the large specific surface area, mass transfer and electron conductivity provided by a unique and suitable 2D nanostructure and nitrogen doping. The obtained N-Ni(OH)2/NF not only shows a superior HERs performance, but also exhibits good stability during long-term electrolysis. Full article
(This article belongs to the Special Issue Non-novel Metal Electrocatalytic Materials for Clean Energy)
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12 pages, 3708 KiB  
Article
Unveiling the Synergistic Effect of Two-Dimensional Heterostructure NiFeP@FeOOH as Stable Electrocatalyst for Oxygen Evolution Reaction
by Qinglong Hou, Zhigang Jiang, Chen Wang, Shuhan Yang, Haizhen Liu, Bo Xing, Honghui Cheng and Kuikui Wang
Catalysts 2024, 14(8), 511; https://doi.org/10.3390/catal14080511 - 7 Aug 2024
Viewed by 824
Abstract
Introducing multiple active sites and constructing a heterostructure are efficient strategies to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam (NF) are prepared by a hydrothermal–phosphorization–electrodeposition process. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on NF increases the specific [...] Read more.
Introducing multiple active sites and constructing a heterostructure are efficient strategies to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam (NF) are prepared by a hydrothermal–phosphorization–electrodeposition process. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on NF increases the specific surface region, while bimetallic phosphide realizes rapid charge transfer, improving the electron transfer rate. The introduction of FeOOH and the construction of a heterostructure result in a synergistic effect among the components, and the surface-active sites are abundant. In situ Raman spectroscopy showed that the excellent oxygen evolution reaction (OER) performance was due to reconstruction-induced hydroxyl oxide, which achieved a multi-active site reaction. The NiFeP@FeOOH/NF electrocatalytic activity was then significantly improved. The findings indicate that in a 1.0 M KOH alkaline solution, NiFeP@FeOOH/NF showed an OER overpotential of 235 mV at 100 mA cm−2, a Tafel slope of 46.46 mV dec−1, and it worked stably at 50 mA cm−2 for 80 h. This research proves that constructing heterostructure and introducing FeOOH are of great significance to the study of the properties of OER electrocatalysts. Full article
(This article belongs to the Special Issue Non-novel Metal Electrocatalytic Materials for Clean Energy)
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