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

41 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

Funding

This work was funded by the research fund of University of Macau, Macau SAR (File no. MYRG2018-00079-IAPME, MYRG2019-00115-IAPME), the Science and Technology Development Fund, Macau SAR (File no. 0059/2018/A2, 009/2017/AMJ), and the Shenzhen Science and Technology Innovation Committee (SGDX20201103093600003). Dr. Y. Ji and Prof. Y. Li also wanted to thank the support of the Natural Science Foundation of Jiangsu Province (Grant BZ2020011), National Key R&D Program of China (Grants 2017YFB0701600, 2017YFA0204800).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

anisotropic nanostructures
electrocatalysis
hcp Ni
hydrogen evolution reaction
monoatomic platinum

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10.1021/acs.nanolett.1c02313

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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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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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U2 - 10.1021/acs.nanolett.1c02313

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

Funding

UN SDGs

Research Keywords

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