Nanoscale Catalysts for Electrochemical Systems of Energy Generation and Storage

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

Deadline for manuscript submissions: closed (10 March 2022) | Viewed by 4622

Special Issue Editors

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Prospekt 31, Building 4, 119071 Moscow, Russia
Interests: nanoscale catalysts; fuel cells; electrocatalysts; flow batteries; electroanalytical chemistry; thin films and nanotechnology
Special Issues, Collections and Topics in MDPI journals
Institut Pprime, Université de Poitiers-CNRS-ENSMA, UPR 3346, 2 Rue Pierre Brousse, Batiment B25, TSA 41105, Cedex 9, 86073 Poitiers, France
Interests: hydrogen energy; fuel cells; energy storage; electrochemical flow measurements; turbulence; MHD flows
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The energy sector is transitioning to clean and renewable energy sources, and electrochemical technologies play an important role in this shift. The intermittent nature of solar and wind generations can be tamed using electrochemical systems of energy storage using batteries and hydrogen generation, storage, and utilization. Catalysts are the key components of these electrochemical energy storage systems and determine their efficiency, cost, and life-time. Currently, platinum group metals are the most efficient electrocatalysts in both anodic and cathodic reactions. The demand for cost efficiency in power sources makes the search for cheaper and more stable electrocatalysts mandatory. Modified carbonaceous materials, alloys, metal oxides and sulfides, polymer-modified electrodes, and macrocycles are promising alternatives to platinum group metals.

The basic scope of this Special Issue is as follows:

  1. Fundamentals of electrocatalysis (reactions of hydrogen and oxygen, and oxidation of small organic molecules).
  2. Electrocatalysts for fuel cells (hydrogen–air, direct alcohol, and regenerative), electrolyzers, and batteries);
  3. Non-platinum electrocatalysts;
  4. Advanced technologies of electrocatalysts fabrication;
  5. Catalyst–support interactions;
  6. Electrocatalysts in real systems (catalyst stability, degradation mechanisms, and monitoring of degradation).

Manuscripts related to the development of nanostructured electrocatalytic materials for other electrochemical power sources are welcome.

Submit your paper and select the Journal “Catalysts” and the Special Issue “Nanoscale Catalysts for Electrochemical Systems of Energy Generation and Storage” via: MDPI submission system. Please contact the Guest Editor or the journal editor (cicy.chen@mdpi.com) for any queries. Our papers will be published on a rolling basis and we will be pleased to receive your submission once you have finished it.

Dr. Alexander D. Modestov
Prof. Dr. Serguei A. Martémianov
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

  • electrocatalysis
  • electrocatalyst
  • chemical power source
  • fuel cell
  • batteries
  • electrolyzers
  • non-platinum catalysts
  • catalyst degradation

Published Papers (2 papers)

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Research

14 pages, 2932 KiB  
Article
Effect of Different Carbon Supports on the Activity of PtNi Bimetallic Catalysts toward the Oxygen Reduction
Catalysts 2022, 12(5), 477; https://doi.org/10.3390/catal12050477 - 23 Apr 2022
Cited by 6 | Viewed by 2125
Abstract
To evaluate supports’ effects on catalytic activity toward the oxygen reduction reaction (ORR), a simple and controlled chemical synthesis, involving the hot injection of metal precursors, was developed to produce bimetallic PtNi nanoparticles (75 wt.% Pt and 25 wt.% Ni), supported on carbon [...] Read more.
To evaluate supports’ effects on catalytic activity toward the oxygen reduction reaction (ORR), a simple and controlled chemical synthesis, involving the hot injection of metal precursors, was developed to produce bimetallic PtNi nanoparticles (75 wt.% Pt and 25 wt.% Ni), supported on carbon nanotubes (CNTs) and carbon nanofibers (CNFs). The synthesized electrocatalyst was characterized using X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and scanning transmission electron microscopy (STEM). To determine the catalytic activity, an electrochemical evaluation of the synthesized catalysts in an acidic medium was performed using cyclic voltammetry (CV), CO stripping, and rotating disk electrode (RDE) tests. The presence of Pt and Ni in the nanoparticles was confirmed by EDS and XRD. Based on the STEM micrographs, the average particle size was 30 nm. Compared to the commercial Pt/C catalyst, the PtNi/CNT catalyst exhibited higher specific activity and slightly lower mass activity toward ORR in a 0.1 M HClO4 electrolyte solution. Full article
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13 pages, 2032 KiB  
Article
Pt-Mo/C, Pt-Fe/C and Pt-Mo-Sn/C Nanocatalysts Derived from Cluster Compounds for Proton Exchange Membrane Fuel Cells
Catalysts 2022, 12(3), 255; https://doi.org/10.3390/catal12030255 - 24 Feb 2022
Cited by 6 | Viewed by 1882
Abstract
Nanosized bimetallic PtMo, PtFe and trimetallic PtMoSn catalysts deposited on highly dispersed carbon black Vulcan XC-72 were synthesized from the cluster complex compounds PtCl(P(C6H5)3)(C3H2N2(CH3)2)Mo(C5H4 [...] Read more.
Nanosized bimetallic PtMo, PtFe and trimetallic PtMoSn catalysts deposited on highly dispersed carbon black Vulcan XC-72 were synthesized from the cluster complex compounds PtCl(P(C6H5)3)(C3H2N2(CH3)2)Mo(C5H4CH3)(CO)3, Pt(P(C6H5)3)(C3N2H2(CH3)2)Fe(CO)3(COC6H5C2C6H5), and PtCl(P(C6H5)3)(C3N2H2(CH3)2)C5H4CH3Mo(CO)3SnCl2, respectively. Structural characteristics of these catalysts were studied using X-ray diffraction (XRD), microprobe energy dispersive spectroscopy (EDX), and transmission electron microscopy (TEM). The synthesized catalysts were tested in aqueous 0.5 M H2SO4 in a three-electrode electrochemical cells and in single fuel cells. Electrocatalytic activity of PtMo/C and PtFe/C in the oxygen reduction reaction (ORR) and the activity of PtMoSn/C in electrochemical oxidation of ethanol were evaluated. It was shown that specific characteristics of the synthesized catalysts are 1.5–2 times higher than those of a commercial Pt(20%)/C catalyst. The results of experiments indicate that PtFe/C, PtMo/C, and PtMoSn/C catalysts prepared from the corresponding complex precursors can be regarded as promising candidates for application in fuel cells due to their high specific activity. Full article
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