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Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?

Platinum–carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions. In the present paper, Pt/C electrocatalysts containing sm...

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Autores principales: Paperzh, Kirill O, Alekseenko, Anastasia A, Volochaev, Vadim A, Pankov, Ilya V, Safronenko, Olga A, Guterman, Vladimir E
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8261527/
https://www.ncbi.nlm.nih.gov/pubmed/34285863
http://dx.doi.org/10.3762/bjnano.12.49
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author Paperzh, Kirill O
Alekseenko, Anastasia A
Volochaev, Vadim A
Pankov, Ilya V
Safronenko, Olga A
Guterman, Vladimir E
author_facet Paperzh, Kirill O
Alekseenko, Anastasia A
Volochaev, Vadim A
Pankov, Ilya V
Safronenko, Olga A
Guterman, Vladimir E
author_sort Paperzh, Kirill O
collection PubMed
description Platinum–carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions. In the present paper, Pt/C electrocatalysts containing small (2–2.6 nm) nanoparticles (NPs) of a similar size, uniformly distributed over the surface of a carbon support, were obtained by the original method of liquid-phase synthesis. A comparative study of the structural characteristics, catalytic activity in the oxygen electroreduction reaction (ORR), and durability of the synthesized catalysts, as well as their commercial analogs, was carried out. It was shown that the uniformity of the structural and morphological characteristics of Pt/C catalysts makes it possible to reduce the negative effect of the small size of NPs on their stability. As a result, the obtained catalysts were significantly superior to their commercial analogs regarding ORR activity, but not inferior to them in terms of stability.
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spelling pubmed-82615272021-07-19 Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance? Paperzh, Kirill O Alekseenko, Anastasia A Volochaev, Vadim A Pankov, Ilya V Safronenko, Olga A Guterman, Vladimir E Beilstein J Nanotechnol Full Research Paper Platinum–carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions. In the present paper, Pt/C electrocatalysts containing small (2–2.6 nm) nanoparticles (NPs) of a similar size, uniformly distributed over the surface of a carbon support, were obtained by the original method of liquid-phase synthesis. A comparative study of the structural characteristics, catalytic activity in the oxygen electroreduction reaction (ORR), and durability of the synthesized catalysts, as well as their commercial analogs, was carried out. It was shown that the uniformity of the structural and morphological characteristics of Pt/C catalysts makes it possible to reduce the negative effect of the small size of NPs on their stability. As a result, the obtained catalysts were significantly superior to their commercial analogs regarding ORR activity, but not inferior to them in terms of stability. Beilstein-Institut 2021-06-29 /pmc/articles/PMC8261527/ /pubmed/34285863 http://dx.doi.org/10.3762/bjnano.12.49 Text en Copyright © 2021, Paperzh et al. https://creativecommons.org/licenses/by/4.0/https://www.beilstein-journals.org/bjnano/terms/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0 (https://creativecommons.org/licenses/by/4.0/) ). Please note that the reuse, redistribution and reproduction in particular requires that the author(s) and source are credited and that individual graphics may be subject to special legal provisions. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms/terms)
spellingShingle Full Research Paper
Paperzh, Kirill O
Alekseenko, Anastasia A
Volochaev, Vadim A
Pankov, Ilya V
Safronenko, Olga A
Guterman, Vladimir E
Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title_full Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title_fullStr Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title_full_unstemmed Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title_short Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
title_sort stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8261527/
https://www.ncbi.nlm.nih.gov/pubmed/34285863
http://dx.doi.org/10.3762/bjnano.12.49
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