Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction

Jun Lu; Hui Wang; Xuyun Wang; Rongfang Wang; Jianwei Ren

doi:10.1016/j.jallcom.2022.165883

Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction

Jun Lu
, Hui Wang
, Xuyun Wang
, Rongfang Wang
, Jianwei Ren

Mechanical Engineering Science

Qingdao University of Science and Technology

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Practices in large-scale hydrolysis hydrogen production requires low-cost non-precious metal catalysts with high-efficiency. In this work, amorphous/polycrystalline CoP@CoB hollow nanochains are in-situ fabricated by applying gas-phase phosphating on CoB nano-chains. As expected, the formation of amorphous/polycrystalline with partially hollow structures and P-doping increased the number of exposed active sites, and altered the electronic structure of Co. As a result, the electron transfer and Hydrogen Evolution Reaction (HER) performance are enhanced. Based on the Kirkendall effect, the fabricated CoP@CoB catalyst generates a current density of 10 mA cm⁻² at overpotential of 135 mV, which is much lower than the reported value of 250 mV for amorphous CoB nanoparticles.

Original language	English
Article number	165883
Journal	Journal of Alloys and Compounds
Volume	920
DOIs	https://doi.org/10.1016/j.jallcom.2022.165883
Publication status	Published - 5 Nov 2022

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

CoP@CoB
Core-shell
Electrocatalysts
Hydrogen evolution reaction
Kirkendall effect

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2022.165883

Cite this

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title = "Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction",

abstract = "Practices in large-scale hydrolysis hydrogen production requires low-cost non-precious metal catalysts with high-efficiency. In this work, amorphous/polycrystalline CoP@CoB hollow nanochains are in-situ fabricated by applying gas-phase phosphating on CoB nano-chains. As expected, the formation of amorphous/polycrystalline with partially hollow structures and P-doping increased the number of exposed active sites, and altered the electronic structure of Co. As a result, the electron transfer and Hydrogen Evolution Reaction (HER) performance are enhanced. Based on the Kirkendall effect, the fabricated CoP@CoB catalyst generates a current density of 10 mA cm−2 at overpotential of 135 mV, which is much lower than the reported value of 250 mV for amorphous CoB nanoparticles.",

keywords = "CoP@CoB, Core-shell, Electrocatalysts, Hydrogen evolution reaction, Kirkendall effect",

author = "Jun Lu and Hui Wang and Xuyun Wang and Rongfang Wang and Jianwei Ren",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = nov,

day = "5",

doi = "10.1016/j.jallcom.2022.165883",

language = "English",

volume = "920",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction

AU - Lu, Jun

AU - Wang, Hui

AU - Wang, Xuyun

AU - Wang, Rongfang

AU - Ren, Jianwei

PY - 2022/11/5

Y1 - 2022/11/5

N2 - Practices in large-scale hydrolysis hydrogen production requires low-cost non-precious metal catalysts with high-efficiency. In this work, amorphous/polycrystalline CoP@CoB hollow nanochains are in-situ fabricated by applying gas-phase phosphating on CoB nano-chains. As expected, the formation of amorphous/polycrystalline with partially hollow structures and P-doping increased the number of exposed active sites, and altered the electronic structure of Co. As a result, the electron transfer and Hydrogen Evolution Reaction (HER) performance are enhanced. Based on the Kirkendall effect, the fabricated CoP@CoB catalyst generates a current density of 10 mA cm−2 at overpotential of 135 mV, which is much lower than the reported value of 250 mV for amorphous CoB nanoparticles.

AB - Practices in large-scale hydrolysis hydrogen production requires low-cost non-precious metal catalysts with high-efficiency. In this work, amorphous/polycrystalline CoP@CoB hollow nanochains are in-situ fabricated by applying gas-phase phosphating on CoB nano-chains. As expected, the formation of amorphous/polycrystalline with partially hollow structures and P-doping increased the number of exposed active sites, and altered the electronic structure of Co. As a result, the electron transfer and Hydrogen Evolution Reaction (HER) performance are enhanced. Based on the Kirkendall effect, the fabricated CoP@CoB catalyst generates a current density of 10 mA cm−2 at overpotential of 135 mV, which is much lower than the reported value of 250 mV for amorphous CoB nanoparticles.

KW - CoP@CoB

KW - Core-shell

KW - Electrocatalysts

KW - Hydrogen evolution reaction

KW - Kirkendall effect

UR - https://www.scopus.com/pages/publications/85132516749

U2 - 10.1016/j.jallcom.2022.165883

DO - 10.1016/j.jallcom.2022.165883

M3 - Article

AN - SCOPUS:85132516749

SN - 0925-8388

VL - 920

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 165883

ER -

Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

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