Modulating Electronic Structure of PtCo-Ptrich Nanowires with Ru atoms for Boosted Hydrogen Evolution Catalysis.

Cao, X; Gao, L; Qu, J; Li, L; Xie, Y; Zhao, Y; Wang, G; Liu, H

Modulating Electronic Structure of PtCo-Ptrich Nanowires with Ru atoms for Boosted Hydrogen Evolution Catalysis.

Cao, X Gao, L Qu, J Li, L Xie, Y

Zhao, Y

Wang, G

Liu, H

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Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Small, 2023, 19, (41), pp. e2302639
Issue Date:: 2023-10

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Field	Value	Language
dc.contributor.author	Cao, X
dc.contributor.author	Gao, L
dc.contributor.author	Qu, J
dc.contributor.author	Li, L
dc.contributor.author	Xie, Y https://orcid.org/0000-0002-0296-8862
dc.contributor.author	Zhao, Y https://orcid.org/0000-0002-8653-8666
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472
dc.date.accessioned	2024-03-27T00:01:57Z
dc.date.available	2024-03-27T00:01:57Z
dc.date.issued	2023-10
dc.identifier.citation	Small, 2023, 19, (41), pp. e2302639
dc.identifier.issn	1613-6810
dc.identifier.issn	1613-6829
dc.identifier.uri	http://hdl.handle.net/10453/177205
dc.description.abstract	Rational design and development of highly efficient hydrogen evolution reaction (HER) electrocatalysts is of great significance for the development of green water electrolysis hydrogen production technology. Ru-engineered 1D PtCo-Ptrich nanowires (Ru-Ptrich Co NWs) are fabricated by a facile electrodeposition method. The rich Pt surface on 1D Pt3 Co contributes to the fully exposed active sites and enhanced intrinsic catalytic activity (co-engineered by Ru and Co atoms) for HER. The incorporation of Ru atoms can not only accelerate the water dissociation in alkaline condition to provide sufficient H* but also modulate the electronic structure of Pt to achieve optimized H* adsorption energy. As a result, Ru-Ptrich Co NWs have exhibited ultralow HER overpotentials (η) of 8 and 112 mV to achieve current densities of 10 and 100 mA cm-2 in 1 m KOH, respectively, which far exceed those of commercial Pt/C catalyst (η10 = 29 mV, η100 = 206 mV). Density functional theory (DFT) calculations further demonstrate that the incorporated Ru atoms possess strong water adsorption capacity (-0.52 vs -0.12 eV for Pt), facilitating water dissociation. The Pt atoms in the outermost Pt-rich skin of Ru-Ptrich Co NWs achieve optimized H* adsorption free energy (ΔGH* ) of -0.08 eV, boosting hydrogen generation.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation	http://purl.org/au-research/grants/arc/FT180100705
dc.relation.ispartof	Small
dc.relation.isbasedon	10.1002/smll.202302639
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Modulating Electronic Structure of PtCo-Ptrich Nanowires with Ru atoms for Boosted Hydrogen Evolution Catalysis.
dc.type	Journal Article
utslib.citation.volume	19
utslib.location.activity	Germany
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access	*
dc.date.updated	2024-03-27T00:01:56Z
pubs.issue	41
pubs.publication-status	Published
pubs.volume	19
utslib.citation.issue	41

Abstract:

Rational design and development of highly efficient hydrogen evolution reaction (HER) electrocatalysts is of great significance for the development of green water electrolysis hydrogen production technology. Ru-engineered 1D PtCo-Ptrich nanowires (Ru-Ptrich Co NWs) are fabricated by a facile electrodeposition method. The rich Pt surface on 1D Pt3 Co contributes to the fully exposed active sites and enhanced intrinsic catalytic activity (co-engineered by Ru and Co atoms) for HER. The incorporation of Ru atoms can not only accelerate the water dissociation in alkaline condition to provide sufficient H* but also modulate the electronic structure of Pt to achieve optimized H* adsorption energy. As a result, Ru-Ptrich Co NWs have exhibited ultralow HER overpotentials (η) of 8 and 112 mV to achieve current densities of 10 and 100 mA cm-2 in 1 m KOH, respectively, which far exceed those of commercial Pt/C catalyst (η10 = 29 mV, η100 = 206 mV). Density functional theory (DFT) calculations further demonstrate that the incorporated Ru atoms possess strong water adsorption capacity (-0.52 vs -0.12 eV for Pt), facilitating water dissociation. The Pt atoms in the outermost Pt-rich skin of Ru-Ptrich Co NWs achieve optimized H* adsorption free energy (ΔGH* ) of -0.08 eV, boosting hydrogen generation.

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http://hdl.handle.net/10453/177205