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Nanomaterials
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Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future
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Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 9414

Special Issue Editors

Dr. Baizeng Fang

grade E-Mail Website
Guest Editor
Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
Interests: electrocatalysis; electrochemical energy; photocatalysis; solar energy; solar cells; biomedical applications; biomass; environmental remediation
Dr. Gaoyang Liu

E-Mail Website
Assistant Guest Editor
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: hydrogen production and storage related catalytic materials; component; devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrocatalysts play critical roles in energy and environment applications, for example, electrocatalytic hydrogen production from water and conversion of carbon dioxide into useful hydrocarbon fuels, providing an innovative solution for both the shortage of fossil fuels and the global warming problem. By using nanosized materials as electrocatalysts, one can expect an enhanced amount of electrocatalytic sites and reduce the amount of precious catalyst materials without sacrificing efficiency. The theoretical understanding of catalytic mechanisms and rational material design strategies are key to the successful development of inexpensive efficient electrocatalysts. We invite authors to contribute original research and review articles with emphasis on recent developments in novel nanosized electrocatalysts for applications in energy and the environment.

Potential topics include but are not limited to:

  • Recent developments in nanosized electrocatalysts for energy and environmental applications;
  • Theoretical calculation, simulation, and modeling;
  • Strategies for synthesis of new nanosized electrocatalysts;
  • Roles of composition, morphology, and structure of electrocatalysts;
  • Identification of electrocatalytic mechanisms;
  • Investigation of nanosized electrocatalysts in water splitting, and oxygen/carbon dioxide/nitrogen electroreduction

Dr. Baizeng Fang
Dr. Gaoyang Liu
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. Nanomaterials 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 2900 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
  • Electrochemical energy
  • Water splitting
  • Carbon dioxide reduction
  • Hydrogen evolution
  • Oxygen evolution
  • Hydrogen peroxide production
  • Methanol oxidation
  • Remediation of water pollutants
  • Electro-organosynthesis

Related Special Issue

Published Papers (5 papers)

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Research

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13 pages, 2955 KiB  
Article
Stainless Steel-Supported Amorphous Nickel Phosphide/Nickel as an Electrocatalyst for Hydrogen Evolution Reaction
by Gaoyang Liu, Faguo Hou, Xindong Wang and Baizeng Fang
Nanomaterials 2022, 12(19), 3328; https://doi.org/10.3390/nano12193328 - 24 Sep 2022
Cited by 5 | Viewed by 1657
Abstract
Recently, nickel phosphides (Ni-P) in an amorphous state have emerged as potential catalysts with high intrinsic activity and excellent electrochemical stability for hydrogen evolution reactions (HER). However, it still lacks a good strategy to prepare amorphous Ni-P with rich surface defects or structural [...] Read more.
Recently, nickel phosphides (Ni-P) in an amorphous state have emerged as potential catalysts with high intrinsic activity and excellent electrochemical stability for hydrogen evolution reactions (HER). However, it still lacks a good strategy to prepare amorphous Ni-P with rich surface defects or structural boundaries, and it is also hard to construct a porous Ni-P layer with favorable electron transport and gas–liquid transport. Herein, an integrated porous electrode consisting of amorphous Ni-P and a Ni interlayer was successfully constructed on a 316L stainless steel felt (denoted as Ni-P/Ni-316L). The results demonstrated that the pH of the plating solution significantly affected the grain size, pore size and distribution, and roughness of the cell-like particle surface of the amorphous Ni-P layer. The Ni-P/Ni-316L prepared at pH = 3 presented the richest surface defects or structural boundaries as well as porous structure. As expected, the as-developed Ni-P/Ni-316L demonstrated the best kinetics, with η10 of 73 mV and a Tafel slope of ca. 52 mV dec-1 for the HER among all the electrocatalysts prepared at various pH values. Furthermore, the Ni-P/Ni-316L exhibited comparable electrocatalytic HER performance and better durability than the commercial Pt (20 wt%)/C in a real water electrolysis cell, indicating that the non-precious metal-based Ni-P/Ni-316L is promising for large-scale processing and practical use. Full article
(This article belongs to the Special Issue Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future)
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15 pages, 2814 KiB  
Article
PdAg/Ag(111) Surface Alloys: A Highly Efficient Catalyst of Oxygen Reduction Reaction
by Minghao Hua, Xuelei Tian, Shuo Li and Xiaohang Lin
Nanomaterials 2022, 12(11), 1802; https://doi.org/10.3390/nano12111802 - 25 May 2022
Cited by 4 | Viewed by 1932
Abstract
In this article, the behavior of various Pd ensembles on the PdAg(111) surfaces was systematically investigated for oxygen reduction reaction (ORR) intermediates using density functional theory (DFT) simulation. The Pd monomer on the PdAg(111) surface (with a Pd subsurface layer) has the best [...] Read more.
In this article, the behavior of various Pd ensembles on the PdAg(111) surfaces was systematically investigated for oxygen reduction reaction (ORR) intermediates using density functional theory (DFT) simulation. The Pd monomer on the PdAg(111) surface (with a Pd subsurface layer) has the best predicted performance, with a higher limiting potential (0.82 V) than Pt(111) (0.80 V). It could be explained by the subsurface coordination, which was also proven by the analysis of electronic properties. In this case, it is necessary to consider the influence of the near-surface layers when modeling the single-atom alloy (SAA) catalyst processes. Another important advantage of PdAg SAA is that atomic-dispersed Pd as adsorption sites can significantly improve the resistance to CO poisoning. Furthermore, by adjusting the Pd ensembles on the catalyst surface, an exciting ORR catalyst combination with predicted activity and high tolerance to CO poisoning can be designed. Full article
(This article belongs to the Special Issue Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future)
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18 pages, 4024 KiB  
Article
Free-Standing, Interwoven Tubular Graphene Mesh-Supported Binary AuPt Nanocatalysts: An Innovative and High-Performance Anode Methanol Oxidation Catalyst
by An T. Nguyen, Van Viet Tran, Asnidar Siahaan, Hung-Chih Kan, Yung-Jung Hsu and Chia-Chen Hsu
Nanomaterials 2022, 12(10), 1689; https://doi.org/10.3390/nano12101689 - 16 May 2022
Cited by 2 | Viewed by 1919
Abstract
Pt-based alloy or bimetallic anode catalysts have been developed to reduce the carbon monoxide (CO) poisoning effect and the usage of Pt in direct methanol fuel cells (DMFCs), where the second metal plays a role as CO poisoning inhibitor on Pt. Furthermore, better [...] Read more.
Pt-based alloy or bimetallic anode catalysts have been developed to reduce the carbon monoxide (CO) poisoning effect and the usage of Pt in direct methanol fuel cells (DMFCs), where the second metal plays a role as CO poisoning inhibitor on Pt. Furthermore, better performance in DMFCs can be achieved by improving the catalytic dispersion and using high-performance supporting materials. In this work, we introduced a free-standing, macroscopic, interwoven tubular graphene (TG) mesh as a supporting material because of its high surface area, favorable chemical inertness, and excellent conductivity. Particularly, binary AuPt nanoparticles (NPs) can be easily immobilized on both outer and inner walls of the TG mesh with a highly dispersive distribution by a simple and efficient chemical reduction method. The TG mesh, whose outer and inner walls were decorated with optimized loading of binary AuPt NPs, exhibited a remarkably catalytic performance in DMFCs. Its methanol oxidation reaction (MOR) activity was 10.09 and 2.20 times higher than those of the TG electrodes with only outer wall immobilized with pure Pt NPs and binary AuPt NPs, respectively. Furthermore, the catalyst also displayed a great stability in methanol oxidation after 200 scanning cycles, implying the excellent tolerance toward the CO poisoning effect. Full article
(This article belongs to the Special Issue Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future)
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13 pages, 28561 KiB  
Article
Ordered Porous TiO2@C Layer as an Electrocatalyst Support for Improved Stability in PEMFCs
by Gaoyang Liu, Zhaoyi Yang, Xindong Wang and Baizeng Fang
Nanomaterials 2021, 11(12), 3462; https://doi.org/10.3390/nano11123462 - 20 Dec 2021
Cited by 7 | Viewed by 2823
Abstract
Proton exchange membrane fuel cells (PEMFCs) are the most promising clean energy source in the 21st century. In order to achieve a high power density, electrocatalytic performance, and electrochemical stability, an ordered array structure membrane electrode is highly desired. In this paper, a [...] Read more.
Proton exchange membrane fuel cells (PEMFCs) are the most promising clean energy source in the 21st century. In order to achieve a high power density, electrocatalytic performance, and electrochemical stability, an ordered array structure membrane electrode is highly desired. In this paper, a new porous Pt-TiO2@C ordered integrated electrode was prepared and applied to the cathode of a PEMFC. The utilization of the TiO2@C support can significantly decrease the loss of catalyst caused by the oxidation of the carbon from the conventional carbon layer due to the strong interaction of TiO2 and C. Furthermore, the thin carbon layer coated on TiO2 provides the rich active sites for the Pt growth, and the ordered support and catalyst structure reduces the mass transport resistance and improves the stability of the electrode. Due to its unique structural characteristics, the ordered porous Pt-TiO2@C array structure shows an excellent catalytic activity and improved Pt utilization. In addition, the as-developed porous ordered structure exhibits superior stability after 3000 cycles of accelerated durability test, which reveals an electrochemical surface area decay of less than 30%, considerably lower than that (i.e., 80%) observed for the commercial Pt/C. Full article
(This article belongs to the Special Issue Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future)
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Review

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45 pages, 76162 KiB  
Review
Advanced Nanostructured Materials for Electrocatalysis in Lithium–Sulfur Batteries
by Zihui Song, Wanyuan Jiang, Xigao Jian and Fangyuan Hu
Nanomaterials 2022, 12(23), 4341; https://doi.org/10.3390/nano12234341 - 06 Dec 2022
Cited by 12 | Viewed by 2266
Abstract
Lithium–sulfur (Li-S) batteries are considered as among the most promising electrochemical energy storage devices due to their high theoretical energy density and low cost. However, the inherently complex electrochemical mechanism in Li-S batteries leads to problems such as slow internal reaction kinetics and [...] Read more.
Lithium–sulfur (Li-S) batteries are considered as among the most promising electrochemical energy storage devices due to their high theoretical energy density and low cost. However, the inherently complex electrochemical mechanism in Li-S batteries leads to problems such as slow internal reaction kinetics and a severe shuttle effect, which seriously affect the practical application of batteries. Therefore, accelerating the internal electrochemical reactions of Li-S batteries is the key to realize their large-scale applications. This article reviews significant efforts to address the above problems, mainly the catalysis of electrochemical reactions by specific nanostructured materials. Through the rational design of homogeneous and heterogeneous catalysts (including but not limited to strategies such as single atoms, heterostructures, metal compounds, and small-molecule solvents), the chemical reactivity of Li-S batteries has been effectively improved. Here, the application of nanomaterials in the field of electrocatalysis for Li-S batteries is introduced in detail, and the advancement of nanostructures in Li-S batteries is emphasized. Full article
(This article belongs to the Special Issue Advances in Novel Nanostructured Materials for Electrocatalysis–Trends and Future)
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