Monoatomic Platinum-Embedded Hexagonal Close-Packed Nickel Anisotropic Superstructures as Highly Efficient Hydrogen Evolution Catalyst

Jiabao Ding; Yujin Ji; Youyong Li; Guo Hong

doi:10.1021/acs.nanolett.1c02313

Monoatomic Platinum-Embedded Hexagonal Close-Packed Nickel Anisotropic Superstructures as Highly Efficient Hydrogen Evolution Catalyst

Jiabao Ding, Yujin Ji, Youyong Li^*, Guo Hong^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

39 Citations (Scopus)

Abstract

The rational design of platinum (Pt) based nanostructures with specific crystal structure plays a significant role in their diverse applications. Herein, the anisotropic superstructures (ASs) of monoatomic Pt-embedded hexagonal close-packed nickel (hcp Ni) nanosheets were successfully synthesized for efficient hydrogen evolution in which an unusual dissociation-diffusion-desorption mechanism played a crucial role. The overpotential for the Pt/Ni ASs to reach the specific current density (10 mA cm^-2) is 28.0 mV, which is much lower than that of conventional Pt/C catalyst (71.0 mV). Moreover, at the overpotential of 100 mV, the mass activity of 30.2 A mg_Pt^-1 for the Pt/Ni ASs is 1060% greater than that in conventional Pt/C catalyst (2.6 A mg_Pt^-1). This work provides a new approach to synthesize highly anisotropic superstructures embedded with monoatomic noble metals to boost their hopeful applications in catalytic applications. © 2021 American Chemical Society.

Original language	English
Pages (from-to)	9381-9387
Journal	Nano Letters
Volume	21
Issue number	22
Online published	9 Nov 2021
DOIs	https://doi.org/10.1021/acs.nanolett.1c02313
Publication status	Published - 24 Nov 2021
Externally published	Yes

Research Keywords

anisotropic nanostructures
electrocatalysis
hcp Ni
hydrogen evolution reaction
monoatomic platinum

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title = "Monoatomic Platinum-Embedded Hexagonal Close-Packed Nickel Anisotropic Superstructures as Highly Efficient Hydrogen Evolution Catalyst",

abstract = "The rational design of platinum (Pt) based nanostructures with specific crystal structure plays a significant role in their diverse applications. Herein, the anisotropic superstructures (ASs) of monoatomic Pt-embedded hexagonal close-packed nickel (hcp Ni) nanosheets were successfully synthesized for efficient hydrogen evolution in which an unusual dissociation-diffusion-desorption mechanism played a crucial role. The overpotential for the Pt/Ni ASs to reach the specific current density (10 mA cm-2) is 28.0 mV, which is much lower than that of conventional Pt/C catalyst (71.0 mV). Moreover, at the overpotential of 100 mV, the mass activity of 30.2 A mgPt-1 for the Pt/Ni ASs is 1060% greater than that in conventional Pt/C catalyst (2.6 A mgPt-1). This work provides a new approach to synthesize highly anisotropic superstructures embedded with monoatomic noble metals to boost their hopeful applications in catalytic applications. {\textcopyright} 2021 American Chemical Society.",

keywords = "anisotropic nanostructures, electrocatalysis, hcp Ni, hydrogen evolution reaction, monoatomic platinum",

author = "Jiabao Ding and Yujin Ji and Youyong Li and Guo Hong",

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day = "24",

doi = "10.1021/acs.nanolett.1c02313",

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T1 - Monoatomic Platinum-Embedded Hexagonal Close-Packed Nickel Anisotropic Superstructures as Highly Efficient Hydrogen Evolution Catalyst

AU - Ding, Jiabao

AU - Ji, Yujin

AU - Li, Youyong

AU - Hong, Guo

PY - 2021/11/24

Y1 - 2021/11/24

N2 - The rational design of platinum (Pt) based nanostructures with specific crystal structure plays a significant role in their diverse applications. Herein, the anisotropic superstructures (ASs) of monoatomic Pt-embedded hexagonal close-packed nickel (hcp Ni) nanosheets were successfully synthesized for efficient hydrogen evolution in which an unusual dissociation-diffusion-desorption mechanism played a crucial role. The overpotential for the Pt/Ni ASs to reach the specific current density (10 mA cm-2) is 28.0 mV, which is much lower than that of conventional Pt/C catalyst (71.0 mV). Moreover, at the overpotential of 100 mV, the mass activity of 30.2 A mgPt-1 for the Pt/Ni ASs is 1060% greater than that in conventional Pt/C catalyst (2.6 A mgPt-1). This work provides a new approach to synthesize highly anisotropic superstructures embedded with monoatomic noble metals to boost their hopeful applications in catalytic applications. © 2021 American Chemical Society.

AB - The rational design of platinum (Pt) based nanostructures with specific crystal structure plays a significant role in their diverse applications. Herein, the anisotropic superstructures (ASs) of monoatomic Pt-embedded hexagonal close-packed nickel (hcp Ni) nanosheets were successfully synthesized for efficient hydrogen evolution in which an unusual dissociation-diffusion-desorption mechanism played a crucial role. The overpotential for the Pt/Ni ASs to reach the specific current density (10 mA cm-2) is 28.0 mV, which is much lower than that of conventional Pt/C catalyst (71.0 mV). Moreover, at the overpotential of 100 mV, the mass activity of 30.2 A mgPt-1 for the Pt/Ni ASs is 1060% greater than that in conventional Pt/C catalyst (2.6 A mgPt-1). This work provides a new approach to synthesize highly anisotropic superstructures embedded with monoatomic noble metals to boost their hopeful applications in catalytic applications. © 2021 American Chemical Society.

KW - anisotropic nanostructures

KW - electrocatalysis

KW - hcp Ni

KW - hydrogen evolution reaction

KW - monoatomic platinum

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DO - 10.1021/acs.nanolett.1c02313

M3 - RGC 21 - Publication in refereed journal

C2 - 34751578

SN - 1530-6984

VL - 21

SP - 9381

EP - 9387

JO - Nano Letters

JF - Nano Letters

IS - 22

ER -

Monoatomic Platinum-Embedded Hexagonal Close-Packed Nickel Anisotropic Superstructures as Highly Efficient Hydrogen Evolution Catalyst

Abstract

Research Keywords

UN SDGs

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