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Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation

Direct ethanol fuel cells have great potential for practical power applications due to their easy operation, high energy density, and low toxicity. However, the slow and incomplete ethanol electrooxidation (EEO) reaction is a major drawback that hinders the development of this type of fuel cell. Her...

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Detalles Bibliográficos
Autores principales: Abdelwahab, Ibrahim, Abdelwahab, Abdalla
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9623562/
https://www.ncbi.nlm.nih.gov/pubmed/36349020
http://dx.doi.org/10.1039/d2ra05452c
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author Abdelwahab, Ibrahim
Abdelwahab, Abdalla
author_facet Abdelwahab, Ibrahim
Abdelwahab, Abdalla
author_sort Abdelwahab, Ibrahim
collection PubMed
description Direct ethanol fuel cells have great potential for practical power applications due to their easy operation, high energy density, and low toxicity. However, the slow and incomplete ethanol electrooxidation (EEO) reaction is a major drawback that hinders the development of this type of fuel cell. Here, we report a facile approach for the preparation of highly active, low cost and stable electrocatalysts based on palladium (Pd) nanoparticles and black phosphorus/palladium (BP/Pd) nanohybrids supported on a carbon aerogel (CA). The nanocomposites show remarkable catalytic performance and stability as anode electrocatalysts for EEO in an alkaline medium. A mass peak current density of 8376 mA mg(Pd)(−1) is attained for EEO on the BP/Pd/CA catalyst, which is 11.4 times higher than that of the commercial Pd/C catalyst. To gain deep insight into the structure–property relationship associated with superior electroactivity, the catalysts are well characterized in terms of morphology, surface chemistry, and catalytic activity. It is found that the BP-doped CA support provides high catalyst dispersibility, protection against leaching, and modification of the electronic and catalytic properties of Pd, while the catalyst modifies CA into a more open and conductive structure. This synergistic interaction between the support and the catalyst improves the transport of active species and electrons at the electrode/electrolyte interface, leading to rapid EEO reaction kinetics.
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spelling pubmed-96235622022-11-07 Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation Abdelwahab, Ibrahim Abdelwahab, Abdalla RSC Adv Chemistry Direct ethanol fuel cells have great potential for practical power applications due to their easy operation, high energy density, and low toxicity. However, the slow and incomplete ethanol electrooxidation (EEO) reaction is a major drawback that hinders the development of this type of fuel cell. Here, we report a facile approach for the preparation of highly active, low cost and stable electrocatalysts based on palladium (Pd) nanoparticles and black phosphorus/palladium (BP/Pd) nanohybrids supported on a carbon aerogel (CA). The nanocomposites show remarkable catalytic performance and stability as anode electrocatalysts for EEO in an alkaline medium. A mass peak current density of 8376 mA mg(Pd)(−1) is attained for EEO on the BP/Pd/CA catalyst, which is 11.4 times higher than that of the commercial Pd/C catalyst. To gain deep insight into the structure–property relationship associated with superior electroactivity, the catalysts are well characterized in terms of morphology, surface chemistry, and catalytic activity. It is found that the BP-doped CA support provides high catalyst dispersibility, protection against leaching, and modification of the electronic and catalytic properties of Pd, while the catalyst modifies CA into a more open and conductive structure. This synergistic interaction between the support and the catalyst improves the transport of active species and electrons at the electrode/electrolyte interface, leading to rapid EEO reaction kinetics. The Royal Society of Chemistry 2022-11-01 /pmc/articles/PMC9623562/ /pubmed/36349020 http://dx.doi.org/10.1039/d2ra05452c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Abdelwahab, Ibrahim
Abdelwahab, Abdalla
Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title_full Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title_fullStr Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title_full_unstemmed Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title_short Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
title_sort black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9623562/
https://www.ncbi.nlm.nih.gov/pubmed/36349020
http://dx.doi.org/10.1039/d2ra05452c
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