3D hierarchical NiS2/MoS2 nanostructures on CFP with enhanced electrocatalytic activity for hydrogen evolution reaction

Jieqiong Wang; Zheng Liu; Changhong Zhan; Kexi Zhang; Xiaoyong Lai; Jinchun Tu; Yang Cao

doi:10.1016/j.jmst.2019.05.037

3D hierarchical NiS₂/MoS₂ nanostructures on CFP with enhanced electrocatalytic activity for hydrogen evolution reaction

Jieqiong Wang, Zheng Liu, Changhong Zhan, Kexi Zhang^*, Xiaoyong Lai, Jinchun Tu, Yang Cao

^*Corresponding author for this work

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

56 Citations (Scopus)

Abstract

The electrocatalytic activity for hydrogen evolution reaction (HER) is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3D hierarchical NiS₂/MoS₂ composite nanostructures on a carbon fiber paper (CFP) skeleton. The nanostructures distributed on CFP uniformly and composed of 2D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS₂/MoS₂ exhibit great HER activity including a low overpotential of 102 mV, a small Tafel slope of 67 mV/dec, and a high double-layer capacity of 53.7 mF/cm² in 1 M KOH aqueous solution. In addition, the HER activity is almost unchanged after galvanostatic technique with applied current densities of 10 mA/cm² for 20 h.

Original language	English
Pages (from-to)	155-160
Number of pages	6
Journal	Journal of Materials Science and Technology
Volume	39
DOIs	https://doi.org/10.1016/j.jmst.2019.05.037
Publication status	Published - Feb 15 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019

ASJC Scopus Subject Areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics
Metals and Alloys
Materials Chemistry

Keywords

3D hierarchical nanostructure
Bimetal sulfide
Hydrogen evolution reaction

Access to Document

10.1016/j.jmst.2019.05.037

Cite this

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title = "3D hierarchical NiS2/MoS2 nanostructures on CFP with enhanced electrocatalytic activity for hydrogen evolution reaction",

abstract = "The electrocatalytic activity for hydrogen evolution reaction (HER) is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper (CFP) skeleton. The nanostructures distributed on CFP uniformly and composed of 2D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 mV, a small Tafel slope of 67 mV/dec, and a high double-layer capacity of 53.7 mF/cm2 in 1 M KOH aqueous solution. In addition, the HER activity is almost unchanged after galvanostatic technique with applied current densities of 10 mA/cm2 for 20 h.",

keywords = "3D hierarchical nanostructure, Bimetal sulfide, Hydrogen evolution reaction",

author = "Jieqiong Wang and Zheng Liu and Changhong Zhan and Kexi Zhang and Xiaoyong Lai and Jinchun Tu and Yang Cao",

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year = "2020",

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day = "15",

doi = "10.1016/j.jmst.2019.05.037",

language = "English",

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T1 - 3D hierarchical NiS2/MoS2 nanostructures on CFP with enhanced electrocatalytic activity for hydrogen evolution reaction

AU - Wang, Jieqiong

AU - Liu, Zheng

AU - Zhan, Changhong

AU - Zhang, Kexi

AU - Lai, Xiaoyong

AU - Tu, Jinchun

AU - Cao, Yang

PY - 2020/2/15

Y1 - 2020/2/15

N2 - The electrocatalytic activity for hydrogen evolution reaction (HER) is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper (CFP) skeleton. The nanostructures distributed on CFP uniformly and composed of 2D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 mV, a small Tafel slope of 67 mV/dec, and a high double-layer capacity of 53.7 mF/cm2 in 1 M KOH aqueous solution. In addition, the HER activity is almost unchanged after galvanostatic technique with applied current densities of 10 mA/cm2 for 20 h.

AB - The electrocatalytic activity for hydrogen evolution reaction (HER) is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper (CFP) skeleton. The nanostructures distributed on CFP uniformly and composed of 2D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 mV, a small Tafel slope of 67 mV/dec, and a high double-layer capacity of 53.7 mF/cm2 in 1 M KOH aqueous solution. In addition, the HER activity is almost unchanged after galvanostatic technique with applied current densities of 10 mA/cm2 for 20 h.

KW - 3D hierarchical nanostructure

KW - Bimetal sulfide

KW - Hydrogen evolution reaction

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