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Nanomaterials
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Advances in Nanoscale Electrocatalysts
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Advances in Nanoscale Electrocatalysts

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

Deadline for manuscript submissions: closed (10 March 2024) | Viewed by 1734

Special Issue Editor

Dr. Fengjiao Li

E-Mail Website
Guest Editor
Shenzhen Automotive Research Institute, Beijing Institute of Technology, Shenzhen, China
Interests: clean energy storage and conversion technologies; electrocatalysis; electrosynthesis; chemical utilization of CO2

Special Issue Information

Dear Colleagues,

Electrocatalysis is a key technology for clean energy storage and conversion, which plays a vital role in the development of sustainable energy. Nanoscale materials exhibit significant advantages in the electrocatalysis field due to their unique structures and electronic and physicochemical properties, such as high surface area, high surface unsaturated atomic density, high electron mobility, and good structural stability. Electrocatalysis, as a unique form of catalysis, can facilitate charge transfer on the electrode–electrolyte interface and the reactant–electrode interface. To enhance catalytic performance, the rational design of efficient nanoscale electrocatalysts is a promising approach to the development of renewable clean energy.

In recent years, nanoscale electrocatalysts have emerged as a prominent topic of research both domestically and internationally. Despite significant progress in nanoscale electrocatalyst research, there are still issues that hinder its growth and sustainability. This Special Issue aims to report the latest innovative research and development in the nanoscale electrocatalysts field, covering a broad of topics, including the design, synthesis, and application of nanoscale electrocatalysts. We welcome contributions from all related groups that contribute to our understanding of this exciting and rapidly advancing field.

Dr. Fengjiao Li
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. 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

  • clean energy storage and conversion
  • electrocatalysts
  • nanoparticles

Published Papers (2 papers)

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Research

14 pages, 6049 KiB  
Article
Fe,Ni-Based Metal–Organic Frameworks Embedded in Nanoporous Nitrogen-Doped Graphene as a Highly Efficient Electrocatalyst for the Oxygen Evolution Reaction
by Panjuan Tang, Biagio Di Vizio, Jijin Yang, Bhushan Patil, Mattia Cattelan and Stefano Agnoli
Nanomaterials 2024, 14(9), 751; https://doi.org/10.3390/nano14090751 - 25 Apr 2024
Viewed by 296
Abstract
The quest for economically sustainable electrocatalysts to replace critical materials in anodes for the oxygen evolution reaction (OER) is a key goal in electrochemical conversion technologies, and, in this context, metal–organic frameworks (MOFs) offer great promise as alternative electroactive materials. In this study, [...] Read more.
The quest for economically sustainable electrocatalysts to replace critical materials in anodes for the oxygen evolution reaction (OER) is a key goal in electrochemical conversion technologies, and, in this context, metal–organic frameworks (MOFs) offer great promise as alternative electroactive materials. In this study, a series of nanostructured electrocatalysts was successfully synthesized by growing tailored Ni-Fe-based MOFs on nitrogen-doped graphene, creating composite systems named MIL-NG-n. Their growth was tuned using a molecular modulator, revealing a non-trivial trend of the properties as a function of the modulator quantity. The most active material displayed an excellent OER performance characterized by a potential of 1.47 V (vs. RHE) to reach 10 mA cm−2, a low Tafel slope (42 mV dec−1), and a stability exceeding 18 h in 0.1 M KOH. This outstanding performance was attributed to the synergistic effect between the unique MOF architecture and N-doped graphene, enhancing the amount of active sites and the electron transfer. Compared to a simple mixture of MOFs and N-doped graphene or the deposition of Fe and Ni atoms on the N-doped graphene, these hybrid materials demonstrated a clearly superior OER performance. Full article
(This article belongs to the Special Issue Advances in Nanoscale Electrocatalysts)
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17 pages, 7377 KiB  
Article
Ru-Ce0.7Zr0.3O2−δ as an Anode Catalyst for the Internal Reforming of Dimethyl Ether in Solid Oxide Fuel Cells
by Miguel Morales, Mohammad Rezayat, Sandra García-González, Antonio Mateo and Emilio Jiménez-Piqué
Nanomaterials 2024, 14(7), 603; https://doi.org/10.3390/nano14070603 - 28 Mar 2024
Viewed by 860
Abstract
The development of direct dimethyl ether (DME) solid oxide fuel cells (SOFCs) has several drawbacks, due to the low catalytic activity and carbon deposition of conventional Ni–zirconia-based anodes. In the present study, the insertion of 2.0 wt.% Ru-Ce0.7Zr0.3O2−δ [...] Read more.
The development of direct dimethyl ether (DME) solid oxide fuel cells (SOFCs) has several drawbacks, due to the low catalytic activity and carbon deposition of conventional Ni–zirconia-based anodes. In the present study, the insertion of 2.0 wt.% Ru-Ce0.7Zr0.3O2−δ (ruthenium–zirconium-doped ceria, Ru-CZO) as an anode catalyst layer (ACL) is proposed to be a promising solution. For this purpose, the CZO powder was prepared by the sol–gel synthesis method, and subsequently, nanoparticles of Ru (1.0–2.0 wt.%) were synthesized by the impregnation method and calcination. The catalyst powder was characterized by BET-specific surface area, X-ray diffraction (XRD), field emission scanning electron microscopy with an energy-dispersive spectroscopy detector (FESEM-EDS), and transmission electron microscopy (TEM) techniques. Afterward, the catalytic activity of Ru-CZO catalyst was studied using DME partial oxidation. Finally, button anode-supported SOFCs with Ru-CZO ACL were prepared, depositing Ru-CZO onto the anode support and using an annealing process. The effect of ACL on the electrochemical performance of cells was investigated under a DME and air mixture at 750 °C. The results showed a high dispersion of Ru in the CZO solid solution, which provided a complete DME conversion and high yields of H2 and CO at 750 °C. As a result, 2.0 wt.% Ru-CZO ACL enhanced the cell performance by more than 20% at 750 °C. The post-test analysis of cells with ACL proved a remarkable resistance of Ru-CZO ACL to carbon deposition compared to the reference cell, evidencing the potential application of Ru-CZO as a catalyst as well as an ACL for direct DME SOFCs. Full article
(This article belongs to the Special Issue Advances in Nanoscale Electrocatalysts)
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