Vanadium carbide nanoparticles encapsulated in graphitic carbon network nanosheets: A high-efficiency electrocatalyst for hydrogen evolution reaction

Xiang Peng; Liangsheng Hu; Lei Wang; Xuming Zhang; Jijiang Fu; Kaifu Huo; Yoon Suk Lee; Kwok Yin Wong; Paul K. Chu

doi:10.1016/j.nanoen.2016.06.020

Vanadium carbide nanoparticles encapsulated in graphitic carbon network nanosheets: A high-efficiency electrocatalyst for hydrogen evolution reaction

Xiang Peng, Liangsheng Hu, Lei Wang, Xuming Zhang, Jijiang Fu, Kaifu Huo, Yoon Suk Lee, Kwok Yin Wong, Paul K. Chu

Research output: Journal article publication › Journal article › Academic research › peer-review

121 Citations (Scopus)

Abstract

A hierarchical nanosheet structure comprising isolated vanadium carbide nanoparticles encapsulated in a highly conductive mesoporous graphitic carbon network (VC-NS) is synthesized by a hydrothermal reaction and subsequent low-temperature magnesium thermic reaction. It has a large specific surface area and boasts highly efficient HER (hydrogen evolution reaction) activity such as very small overpotential, fast proton discharge kinetics, and excellent durability. The small Tafel slope of 56 mV dec-1with a low overpotential of only 98 mV at 10 mA cm-2is quite close to that of the commercial 20% Pt/C catalyst. The excellent durability is indicated by the overpotential shift of only 10 mV after 10000 cyclic voltammetric cycles at a current density of 80 mA cm-2. The high-performance precious-metal-free electrocatalyst is promising in HER and related energy generation applications.

Original language	English
Pages (from-to)	603-609
Number of pages	7
Journal	Nano Energy
Volume	26
DOIs	https://doi.org/10.1016/j.nanoen.2016.06.020
Publication status	Published - 1 Aug 2016

Keywords

Electrocatalysis
Hierarchical nanosheets
Hydrogen evolution reaction
Magnesium thermic reaction
Vanadium carbide

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

UN SDGs

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

More information

10.1016/j.nanoen.2016.06.020

Cite this

@article{f383c0ce56714969b134b278e04f504d,

title = "Vanadium carbide nanoparticles encapsulated in graphitic carbon network nanosheets: A high-efficiency electrocatalyst for hydrogen evolution reaction",

abstract = "A hierarchical nanosheet structure comprising isolated vanadium carbide nanoparticles encapsulated in a highly conductive mesoporous graphitic carbon network (VC-NS) is synthesized by a hydrothermal reaction and subsequent low-temperature magnesium thermic reaction. It has a large specific surface area and boasts highly efficient HER (hydrogen evolution reaction) activity such as very small overpotential, fast proton discharge kinetics, and excellent durability. The small Tafel slope of 56 mV dec-1with a low overpotential of only 98 mV at 10 mA cm-2is quite close to that of the commercial 20% Pt/C catalyst. The excellent durability is indicated by the overpotential shift of only 10 mV after 10000 cyclic voltammetric cycles at a current density of 80 mA cm-2. The high-performance precious-metal-free electrocatalyst is promising in HER and related energy generation applications.",

keywords = "Electrocatalysis, Hierarchical nanosheets, Hydrogen evolution reaction, Magnesium thermic reaction, Vanadium carbide",

author = "Xiang Peng and Liangsheng Hu and Lei Wang and Xuming Zhang and Jijiang Fu and Kaifu Huo and Lee, {Yoon Suk} and Wong, {Kwok Yin} and Chu, {Paul K.}",

year = "2016",

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doi = "10.1016/j.nanoen.2016.06.020",

language = "English",

volume = "26",

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journal = "Nano Energy",

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T1 - Vanadium carbide nanoparticles encapsulated in graphitic carbon network nanosheets: A high-efficiency electrocatalyst for hydrogen evolution reaction

AU - Peng, Xiang

AU - Hu, Liangsheng

AU - Wang, Lei

AU - Zhang, Xuming

AU - Fu, Jijiang

AU - Huo, Kaifu

AU - Lee, Yoon Suk

AU - Wong, Kwok Yin

AU - Chu, Paul K.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - A hierarchical nanosheet structure comprising isolated vanadium carbide nanoparticles encapsulated in a highly conductive mesoporous graphitic carbon network (VC-NS) is synthesized by a hydrothermal reaction and subsequent low-temperature magnesium thermic reaction. It has a large specific surface area and boasts highly efficient HER (hydrogen evolution reaction) activity such as very small overpotential, fast proton discharge kinetics, and excellent durability. The small Tafel slope of 56 mV dec-1with a low overpotential of only 98 mV at 10 mA cm-2is quite close to that of the commercial 20% Pt/C catalyst. The excellent durability is indicated by the overpotential shift of only 10 mV after 10000 cyclic voltammetric cycles at a current density of 80 mA cm-2. The high-performance precious-metal-free electrocatalyst is promising in HER and related energy generation applications.

AB - A hierarchical nanosheet structure comprising isolated vanadium carbide nanoparticles encapsulated in a highly conductive mesoporous graphitic carbon network (VC-NS) is synthesized by a hydrothermal reaction and subsequent low-temperature magnesium thermic reaction. It has a large specific surface area and boasts highly efficient HER (hydrogen evolution reaction) activity such as very small overpotential, fast proton discharge kinetics, and excellent durability. The small Tafel slope of 56 mV dec-1with a low overpotential of only 98 mV at 10 mA cm-2is quite close to that of the commercial 20% Pt/C catalyst. The excellent durability is indicated by the overpotential shift of only 10 mV after 10000 cyclic voltammetric cycles at a current density of 80 mA cm-2. The high-performance precious-metal-free electrocatalyst is promising in HER and related energy generation applications.

KW - Electrocatalysis

KW - Hierarchical nanosheets

KW - Hydrogen evolution reaction

KW - Magnesium thermic reaction

KW - Vanadium carbide

UR - http://www.scopus.com/inward/record.url?scp=84975258338&partnerID=8YFLogxK

U2 - 10.1016/j.nanoen.2016.06.020

DO - 10.1016/j.nanoen.2016.06.020

M3 - Journal article

SN - 2211-2855

VL - 26

SP - 603

EP - 609

JO - Nano Energy

JF - Nano Energy

ER -

Vanadium carbide nanoparticles encapsulated in graphitic carbon network nanosheets: A high-efficiency electrocatalyst for hydrogen evolution reaction

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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