Component-controllable synthesis of Co(SxSe1-x)2 nanowires supported by carbon fiber paper as high-performance electrode for hydrogen evolution reaction

Ke Wang; Chongjian Zhou; Dan Xi; Zhongqi Shi; Cheng He; Hongyan Xia; Guiwu Liu; Guanjun Qiao

doi:10.1016/j.nanoen.2015.10.001

Component-controllable synthesis of Co(S_xSe_1-x)₂ nanowires supported by carbon fiber paper as high-performance electrode for hydrogen evolution reaction

Ke Wang
, Chongjian Zhou
, Dan Xi
, Zhongqi Shi
, Cheng He
, Hongyan Xia
, Guiwu Liu
, Guanjun Qiao

School of Materials Science and Engineering

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

140 Scopus citations

Abstract

The ternary alloyed Co(S_xSe_1-x)₂ nanowires (NWs) supported by carbon fiber paper (CFP) have been successfully synthesized. By adjusting the components of the NWs, it is found that the Co(S_0.73Se_0.27)₂ NWs on CFP exhibit the highest electrocatalytic activity towards hydrogen evolution reaction (HER). To drive the current density of 100mVcm^-2, the Co(S_0.73Se_0.27)₂ NWs only require a small overpotential of 157mV in 0.5M H₂SO₄ solution and the corresponding Tafel slope is only 45.3mVdec^-1. After 20h continuous electrolysis or cycling for 5000 times in acid electrolyte, the robust catalytic activity is still perfectly preserved. DFT calculation results demonstrate that the high intrinsic activity of Co(S_0.73Se_0.27)₂ NWs towards HER is derived from the significant reduction of kinetic energy barrier induced by anion doping. This work presents a new efficient catalyst for HER and the anion doping strategy implemented here could be extended to other earth-abundant electrocatalysts to improve the catalytic performance.

Original language	English
Pages (from-to)	1-11
Number of pages	11
Journal	Nano Energy
Volume	18
DOIs	https://doi.org/10.1016/j.nanoen.2015.10.001
State	Published - 1 Nov 2015

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Component controllable synthesis
Dopant
Hydrogen evolution reaction
Nanowire
Pyrite
Three dimensional

Access to Document

10.1016/j.nanoen.2015.10.001

Cite this

@article{5f188e78a9ce46a7bc8e6ea8b3ea9da7,

title = "Component-controllable synthesis of Co(SxSe1-x)2 nanowires supported by carbon fiber paper as high-performance electrode for hydrogen evolution reaction",

abstract = "The ternary alloyed Co(SxSe1-x)2 nanowires (NWs) supported by carbon fiber paper (CFP) have been successfully synthesized. By adjusting the components of the NWs, it is found that the Co(S0.73Se0.27)2 NWs on CFP exhibit the highest electrocatalytic activity towards hydrogen evolution reaction (HER). To drive the current density of 100mVcm-2, the Co(S0.73Se0.27)2 NWs only require a small overpotential of 157mV in 0.5M H2SO4 solution and the corresponding Tafel slope is only 45.3mVdec-1. After 20h continuous electrolysis or cycling for 5000 times in acid electrolyte, the robust catalytic activity is still perfectly preserved. DFT calculation results demonstrate that the high intrinsic activity of Co(S0.73Se0.27)2 NWs towards HER is derived from the significant reduction of kinetic energy barrier induced by anion doping. This work presents a new efficient catalyst for HER and the anion doping strategy implemented here could be extended to other earth-abundant electrocatalysts to improve the catalytic performance.",

keywords = "Component controllable synthesis, Dopant, Hydrogen evolution reaction, Nanowire, Pyrite, Three dimensional",

author = "Ke Wang and Chongjian Zhou and Dan Xi and Zhongqi Shi and Cheng He and Hongyan Xia and Guiwu Liu and Guanjun Qiao",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = nov,

day = "1",

doi = "10.1016/j.nanoen.2015.10.001",

language = "英语",

volume = "18",

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T1 - Component-controllable synthesis of Co(SxSe1-x)2 nanowires supported by carbon fiber paper as high-performance electrode for hydrogen evolution reaction

AU - Wang, Ke

AU - Zhou, Chongjian

AU - Xi, Dan

AU - Shi, Zhongqi

AU - He, Cheng

AU - Xia, Hongyan

AU - Liu, Guiwu

AU - Qiao, Guanjun

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The ternary alloyed Co(SxSe1-x)2 nanowires (NWs) supported by carbon fiber paper (CFP) have been successfully synthesized. By adjusting the components of the NWs, it is found that the Co(S0.73Se0.27)2 NWs on CFP exhibit the highest electrocatalytic activity towards hydrogen evolution reaction (HER). To drive the current density of 100mVcm-2, the Co(S0.73Se0.27)2 NWs only require a small overpotential of 157mV in 0.5M H2SO4 solution and the corresponding Tafel slope is only 45.3mVdec-1. After 20h continuous electrolysis or cycling for 5000 times in acid electrolyte, the robust catalytic activity is still perfectly preserved. DFT calculation results demonstrate that the high intrinsic activity of Co(S0.73Se0.27)2 NWs towards HER is derived from the significant reduction of kinetic energy barrier induced by anion doping. This work presents a new efficient catalyst for HER and the anion doping strategy implemented here could be extended to other earth-abundant electrocatalysts to improve the catalytic performance.

AB - The ternary alloyed Co(SxSe1-x)2 nanowires (NWs) supported by carbon fiber paper (CFP) have been successfully synthesized. By adjusting the components of the NWs, it is found that the Co(S0.73Se0.27)2 NWs on CFP exhibit the highest electrocatalytic activity towards hydrogen evolution reaction (HER). To drive the current density of 100mVcm-2, the Co(S0.73Se0.27)2 NWs only require a small overpotential of 157mV in 0.5M H2SO4 solution and the corresponding Tafel slope is only 45.3mVdec-1. After 20h continuous electrolysis or cycling for 5000 times in acid electrolyte, the robust catalytic activity is still perfectly preserved. DFT calculation results demonstrate that the high intrinsic activity of Co(S0.73Se0.27)2 NWs towards HER is derived from the significant reduction of kinetic energy barrier induced by anion doping. This work presents a new efficient catalyst for HER and the anion doping strategy implemented here could be extended to other earth-abundant electrocatalysts to improve the catalytic performance.

KW - Component controllable synthesis

KW - Dopant

KW - Hydrogen evolution reaction

KW - Nanowire

KW - Pyrite

KW - Three dimensional

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U2 - 10.1016/j.nanoen.2015.10.001

DO - 10.1016/j.nanoen.2015.10.001

M3 - 文章

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