Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and str...

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Autores principales:	Mir Ghasem Hosseini, Vahid Daneshvari-Esfahlan, Hossein Aghajani, Sigrid Wolf, Viktor Hacker
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrazine electrooxidation anode Pd–Ni nanoparticles nitrogen-doped reduced graphene oxide direct hydrazine fuel cell Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/a6adc43a0e304a90b6f61cdd89341db4
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spelling	oai:doaj.org-article:a6adc43a0e304a90b6f61cdd89341db42021-11-25T17:06:27ZPalladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells10.3390/catal111113722073-4344https://doaj.org/article/a6adc43a0e304a90b6f61cdd89341db42021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4344/11/11/1372https://doaj.org/toc/2073-4344In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm<sup>−2</sup> is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.Mir Ghasem HosseiniVahid Daneshvari-EsfahlanHossein AghajaniSigrid WolfViktor HackerMDPI AGarticlehydrazine electrooxidationanodePd–Ni nanoparticlesnitrogen-doped reduced graphene oxidedirect hydrazine fuel cellChemical technologyTP1-1185ChemistryQD1-999ENCatalysts, Vol 11, Iss 1372, p 1372 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrazine electrooxidation anode Pd–Ni nanoparticles nitrogen-doped reduced graphene oxide direct hydrazine fuel cell Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	hydrazine electrooxidation anode Pd–Ni nanoparticles nitrogen-doped reduced graphene oxide direct hydrazine fuel cell Chemical technology TP1-1185 Chemistry QD1-999 Mir Ghasem Hosseini Vahid Daneshvari-Esfahlan Hossein Aghajani Sigrid Wolf Viktor Hacker Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
description	In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm<sup>−2</sup> is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.
format	article
author	Mir Ghasem Hosseini Vahid Daneshvari-Esfahlan Hossein Aghajani Sigrid Wolf Viktor Hacker
author_facet	Mir Ghasem Hosseini Vahid Daneshvari-Esfahlan Hossein Aghajani Sigrid Wolf Viktor Hacker
author_sort	Mir Ghasem Hosseini
title	Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
title_short	Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
title_full	Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
title_fullStr	Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
title_full_unstemmed	Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells
title_sort	palladium-nickel electrocatalysts on nitrogen-doped reduced graphene oxide nanosheets for direct hydrazine/hydrogen peroxide fuel cells
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a6adc43a0e304a90b6f61cdd89341db4
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Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

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