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Nanomaterials
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Nanomaterials and Nanotechnology for Electrocatalytic Applications
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Nanomaterials and Nanotechnology for Electrocatalytic Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 2552

Special Issue Editors

Dr. Prashanth W. Menezes

E-Mail Website
Guest Editor
1. Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
2. Department of Chemistry, Technische Universität Berlin, Berlin, Germany
Interests: inorganic materials chemistry; solid-state chemistry; energy materials; electrochemistry; functional heterogeneous catalysts; water splitting (O2 and H2 evolution)
Dr. Kamlendra Awasthi

E-Mail Website
Guest Editor
Department of Physics, Malaviya National Institute of Technology Jaipur, Jaipur, India
Interests: nanostructured thin films; membrane separation; polymer nano-filters; polymer solar cell; gas separation; gas and biosensors; soft materials; functional nanomaterials; hydrogen energy: generation, separation, sensing and storage

Special Issue Information

Dear Colleagues,

The subject of nanomaterials and nanotechnology is of significant interest because of their profound electrocatalytic applications in energy conversion (hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, carbon dioxide reduction reaction, hydrogen oxidation) and storage (supercapacitors and batteries). Their application has significantly improved the electrocatalytic activity of numerous electrocatalytic reactions. During the past few years, there has been an increasing amount of research dedicated to designing nanomaterials with intriguing and specific properties to develop highly efficient electrocatalysts with superior stability for various electrocatalytic applications. The performance, such as activity, selectivity, and longevity of supported nanoparticles-based electrocatalysts, is severely influenced by a number of different parameters. These parameters include the size and shape of nanoparticles, defect sites, step sites, metal–support interface, etc. Moreover, the use of nanomaterials is significantly enhancing our knowledge to understanding correlations between size/shape and electrochemical reactivity at the nanoscale. This Special Issue of Nanomaterials is dedicated to collecting reviews and recent papers in electrocatalysis for energy and storage applications.

Dr. Prashanth W. Menezes
Dr. Kamlendra Awasthi
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

  • electrocatalysts
  • metal nanoparticles
  • storage devices
  • electrocatalytic reactions
  • supercapacitors and batteries
  • water splitting
  • single site heterogeneous catalysts
  • fuel cells
  • advanced functional nanomaterials
  • computation of electrocatalysis
  • electrocatalytic reactions

Published Papers (2 papers)

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Research

12 pages, 2467 KiB  
Article
Nitrogen-Doped CuO@CuS Core–Shell Structure for Highly Efficient Catalytic OER Application
by Abu Talha Aqueel Ahmed, Abu Saad Ansari, Vijaya Gopalan Sree, Atanu Jana, Abhishek Meena, Sankar Sekar, Sangeun Cho, Hyungsang Kim and Hyunsik Im
Nanomaterials 2023, 13(24), 3160; https://doi.org/10.3390/nano13243160 - 17 Dec 2023
Cited by 1 | Viewed by 980
Abstract
Water electrolysis is a highly efficient route to produce ideally clean H2 fuel with excellent energy conversion efficiency and high gravimetric energy density, without producing carbon traces, unlike steam methane reforming, and it resolves the issues of environmental contamination via replacing the [...] Read more.
Water electrolysis is a highly efficient route to produce ideally clean H2 fuel with excellent energy conversion efficiency and high gravimetric energy density, without producing carbon traces, unlike steam methane reforming, and it resolves the issues of environmental contamination via replacing the conventional fossil fuel. Particular importance lies in the advancement of highly effective non-precious catalysts for the oxygen evolution reaction (OER). The electrocatalytic activity of an active catalyst mainly depends on the material conductivity, accessible catalytically active sites, and intrinsic OER reaction kinetics, which can be tuned via introducing N heteroatoms in the catalyst structure. Herein, the efficacious nitrogenation of CuS was accomplished, synthesized using a hydrothermal procedure, and characterized for its electrocatalytic activity towards OER. The nitrogen-doped CuO@CuS (N,CuO@CuS) electrocatalyst exhibited superior OER activity compared to pristine CuS (268 and 602 mV), achieving a low overpotential of 240 and 392 mV at a current density of 10 and 100 mA/cm2, respectively, ascribed to the favorable electronic structural modification triggered by nitrogen incorporation. The N,CuO@CuS also exhibits excellent endurance under varied current rates and a static potential response over 25 h with stability measured at 10 and 100 mA/cm2. Full article
(This article belongs to the Special Issue Nanomaterials and Nanotechnology for Electrocatalytic Applications)
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12 pages, 3085 KiB  
Article
Ethanol Electrooxidation at 1–2 nm AuPd Nanoparticles
by Juliette W. Strasser and Richard M. Crooks
Nanomaterials 2022, 12(22), 4093; https://doi.org/10.3390/nano12224093 - 21 Nov 2022
Cited by 1 | Viewed by 1076
Abstract
We report a systematic study of the electrocatalytic properties and stability of a series of 1–2 nm Au, Pd, and AuPd alloy nanoparticles (NPs) for the ethanol oxidation reaction (EOR). Following EOR electrocatalysis, NP sizes and compositions were characterized using aberration-corrected scanning transmission [...] Read more.
We report a systematic study of the electrocatalytic properties and stability of a series of 1–2 nm Au, Pd, and AuPd alloy nanoparticles (NPs) for the ethanol oxidation reaction (EOR). Following EOR electrocatalysis, NP sizes and compositions were characterized using aberration-corrected scanning transmission electron microscopy (ac-STEM) and energy dispersive spectroscopy (EDS). Two main findings emerge from this study. First, alloyed AuPd NPs exhibit enhanced electrocatalytic EOR activity compared to either monometallic Au or Pd NPs. Specifically, NPs having a 3:1 ratio of Au:Pd exhibit an ~8-fold increase in peak current density compared to Pd NPs, with an onset potential shifted ~200 mV more to the negative compared to Au NPs. Second, the size and composition of AuPd alloy NPs do not (within experimental error) change following 1.0 or 2.0 h chronoamperometry experiments, while monometallic Au NPs increase in size from 2 to 5 nm under the same conditions. Notably, this report demonstrates the importance of post-catalytic ac-STEM/EDS characterization for fully evaluating NP activity and stability, especially for 1–2 nm NPs that may change in size or structure during electrocatalysis. Full article
(This article belongs to the Special Issue Nanomaterials and Nanotechnology for Electrocatalytic Applications)
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