Co(OH)2 nanosheet arrays electrodeposited with palladium nanoparticles for hydrogen evolution reaction

Le Yang; Na Wang; Bairui Tao; Fengjuan Miao; Yu Zang; Paul K. Chu

doi:10.1016/j.jallcom.2019.151775

Co(OH)₂ nanosheet arrays electrodeposited with palladium nanoparticles for hydrogen evolution reaction

Le Yang, Na Wang, Bairui Tao^*, Fengjuan Miao^*, Yu Zang, Paul K. Chu

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

Palladium (Pd) nanoparticles in combination with naturally abundant materials are stable and highly active catalysts for hydrogen production. Herein, Co(OH)₂ nanosheet arrays are prepared hydrothermally on graphene/nickel foam (graphene/NF) to produce Co(OH)₂/graphene/NF which provides the desirable three-dimensional (3D) substrate for subsequent Pd electrodeposition to obtain Pd/Co(OH)₂/graphene/NF. The materials exhibit excellent durability and catalytic performance in the hydrogen evolution reaction (HER) in an alkaline environment such as a low overpotential of 124 mV at 10 mA cm⁻²and Tafel slop of 53 mVdec⁻¹. The excellent performance is attributed to the synergistic catalytic effects rendered by the nanostructured interfaces between the Pd nanoparticles and Co(OH)₂ nanosheet arrays as well as large surface area. The technique and materials have large potential in energy conversion applications.

Original language	English
Article number	151775
Journal	Journal of Alloys and Compounds
Volume	810
Online published	9 Aug 2019
DOIs	https://doi.org/10.1016/j.jallcom.2019.151775
Publication status	Published - 25 Nov 2019

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

Co(OH)2
Durability
Hydrogenproduction
Pdnanoparticles

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Cite this

@article{477e150842f441478d9054878efb8270,

title = "Co(OH)2 nanosheet arrays electrodeposited with palladium nanoparticles for hydrogen evolution reaction",

abstract = "Palladium (Pd) nanoparticles in combination with naturally abundant materials are stable and highly active catalysts for hydrogen production. Herein, Co(OH)2 nanosheet arrays are prepared hydrothermally on graphene/nickel foam (graphene/NF) to produce Co(OH)2/graphene/NF which provides the desirable three-dimensional (3D) substrate for subsequent Pd electrodeposition to obtain Pd/Co(OH)2/graphene/NF. The materials exhibit excellent durability and catalytic performance in the hydrogen evolution reaction (HER) in an alkaline environment such as a low overpotential of 124 mV at 10 mA cm−2and Tafel slop of 53 mVdec−1. The excellent performance is attributed to the synergistic catalytic effects rendered by the nanostructured interfaces between the Pd nanoparticles and Co(OH)2 nanosheet arrays as well as large surface area. The technique and materials have large potential in energy conversion applications.",

keywords = "Co(OH)2, Durability, Hydrogenproduction, Pdnanoparticles",

author = "Le Yang and Na Wang and Bairui Tao and Fengjuan Miao and Yu Zang and Chu, {Paul K.}",

year = "2019",

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TY - JOUR

T1 - Co(OH)2 nanosheet arrays electrodeposited with palladium nanoparticles for hydrogen evolution reaction

AU - Yang, Le

AU - Wang, Na

AU - Tao, Bairui

AU - Miao, Fengjuan

AU - Zang, Yu

AU - Chu, Paul K.

PY - 2019/11/25

Y1 - 2019/11/25

N2 - Palladium (Pd) nanoparticles in combination with naturally abundant materials are stable and highly active catalysts for hydrogen production. Herein, Co(OH)2 nanosheet arrays are prepared hydrothermally on graphene/nickel foam (graphene/NF) to produce Co(OH)2/graphene/NF which provides the desirable three-dimensional (3D) substrate for subsequent Pd electrodeposition to obtain Pd/Co(OH)2/graphene/NF. The materials exhibit excellent durability and catalytic performance in the hydrogen evolution reaction (HER) in an alkaline environment such as a low overpotential of 124 mV at 10 mA cm−2and Tafel slop of 53 mVdec−1. The excellent performance is attributed to the synergistic catalytic effects rendered by the nanostructured interfaces between the Pd nanoparticles and Co(OH)2 nanosheet arrays as well as large surface area. The technique and materials have large potential in energy conversion applications.

AB - Palladium (Pd) nanoparticles in combination with naturally abundant materials are stable and highly active catalysts for hydrogen production. Herein, Co(OH)2 nanosheet arrays are prepared hydrothermally on graphene/nickel foam (graphene/NF) to produce Co(OH)2/graphene/NF which provides the desirable three-dimensional (3D) substrate for subsequent Pd electrodeposition to obtain Pd/Co(OH)2/graphene/NF. The materials exhibit excellent durability and catalytic performance in the hydrogen evolution reaction (HER) in an alkaline environment such as a low overpotential of 124 mV at 10 mA cm−2and Tafel slop of 53 mVdec−1. The excellent performance is attributed to the synergistic catalytic effects rendered by the nanostructured interfaces between the Pd nanoparticles and Co(OH)2 nanosheet arrays as well as large surface area. The technique and materials have large potential in energy conversion applications.

KW - Co(OH)2

KW - Durability

KW - Hydrogenproduction

KW - Pdnanoparticles

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DO - 10.1016/j.jallcom.2019.151775

M3 - RGC 21 - Publication in refereed journal

SN - 0925-8388

VL - 810

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 151775

ER -