Synthesis of MoWS2 on Flexible Carbon-Based Electrodes for High-Performance Hydrogen Evolution Reaction

Duc Anh Nguyen; Thi Suong Le; Dae Young Park; Dongseok Suh; Mun Seok Jeong

doi:10.1021/acsami.9b10383

Synthesis of MoWS₂ on Flexible Carbon-Based Electrodes for High-Performance Hydrogen Evolution Reaction

Duc Anh Nguyen, Thi Suong Le, Dae Young Park, Dongseok Suh, Mun Seok Jeong

Department of Physics

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

33 Scopus citations

Abstract

We directly synthesize MoWS₂ nanosheets on conductive carbon nanotube yarn (MoWS₂/CNTY) and carbon fiber cloth (MoWS₂/CC) through a fast and low-temperature thermolysis method to obtain flexible catalyst electrodes that show high performance in the hydrogen evolution reaction. Small Tafel slopes of 41.8 and 46.7 mV dec^-1 are achieved for MoWS₂/CC and MoWS₂/CNTY, respectively, by optimizing the density of the exposed active edge sites of vertically aligned MoWS₂ on CNTY and CC. Furthermore, the catalyst electrodes demonstrate good electrocatalytic stability over 36 h. The proposed technique for fabricating high-performance, binder-free, and flexible catalyst electrodes is more accessible and faster than conventional methods.

Original language	English
Pages (from-to)	37550-37558
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	11
Issue number	41
DOIs	https://doi.org/10.1021/acsami.9b10383
State	Published - 16 Oct 2019

Bibliographical note

Funding Information:
This work was supported by the Institute of Basic Science (No. IBS-R011-D1) and the National Research Foundation of Korea (No. NRF-2019R1A2B5B02070657 and No. 2018K1A4A3A01064272 (Global Research & Development Center Program), Nano Material Technology Development Program (2014M3A7B6020163), and Creative Materials Discovery Program (NRF-2019M3D1A1078296)) funded by the Ministry of Science and ICT.

Publisher Copyright:
Copyright © 2019 American Chemical Society.

Keywords

carbon cloths
carbon nanotube yarns
electrocatalysts
hydrogen evolution reaction (HER)
molybdenum tungsten disulfide (MoWS)

Access to Document

10.1021/acsami.9b10383

Cite this

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title = "Synthesis of MoWS2 on Flexible Carbon-Based Electrodes for High-Performance Hydrogen Evolution Reaction",

abstract = "We directly synthesize MoWS2 nanosheets on conductive carbon nanotube yarn (MoWS2/CNTY) and carbon fiber cloth (MoWS2/CC) through a fast and low-temperature thermolysis method to obtain flexible catalyst electrodes that show high performance in the hydrogen evolution reaction. Small Tafel slopes of 41.8 and 46.7 mV dec-1 are achieved for MoWS2/CC and MoWS2/CNTY, respectively, by optimizing the density of the exposed active edge sites of vertically aligned MoWS2 on CNTY and CC. Furthermore, the catalyst electrodes demonstrate good electrocatalytic stability over 36 h. The proposed technique for fabricating high-performance, binder-free, and flexible catalyst electrodes is more accessible and faster than conventional methods.",

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author = "Nguyen, {Duc Anh} and Le, {Thi Suong} and Park, {Dae Young} and Dongseok Suh and Jeong, {Mun Seok}",

note = "Funding Information: This work was supported by the Institute of Basic Science (No. IBS-R011-D1) and the National Research Foundation of Korea (No. NRF-2019R1A2B5B02070657 and No. 2018K1A4A3A01064272 (Global Research & Development Center Program), Nano Material Technology Development Program (2014M3A7B6020163), and Creative Materials Discovery Program (NRF-2019M3D1A1078296)) funded by the Ministry of Science and ICT. Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

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AU - Suh, Dongseok

AU - Jeong, Mun Seok

N1 - Funding Information: This work was supported by the Institute of Basic Science (No. IBS-R011-D1) and the National Research Foundation of Korea (No. NRF-2019R1A2B5B02070657 and No. 2018K1A4A3A01064272 (Global Research & Development Center Program), Nano Material Technology Development Program (2014M3A7B6020163), and Creative Materials Discovery Program (NRF-2019M3D1A1078296)) funded by the Ministry of Science and ICT. Publisher Copyright: Copyright © 2019 American Chemical Society.

PY - 2019/10/16

Y1 - 2019/10/16

N2 - We directly synthesize MoWS2 nanosheets on conductive carbon nanotube yarn (MoWS2/CNTY) and carbon fiber cloth (MoWS2/CC) through a fast and low-temperature thermolysis method to obtain flexible catalyst electrodes that show high performance in the hydrogen evolution reaction. Small Tafel slopes of 41.8 and 46.7 mV dec-1 are achieved for MoWS2/CC and MoWS2/CNTY, respectively, by optimizing the density of the exposed active edge sites of vertically aligned MoWS2 on CNTY and CC. Furthermore, the catalyst electrodes demonstrate good electrocatalytic stability over 36 h. The proposed technique for fabricating high-performance, binder-free, and flexible catalyst electrodes is more accessible and faster than conventional methods.

AB - We directly synthesize MoWS2 nanosheets on conductive carbon nanotube yarn (MoWS2/CNTY) and carbon fiber cloth (MoWS2/CC) through a fast and low-temperature thermolysis method to obtain flexible catalyst electrodes that show high performance in the hydrogen evolution reaction. Small Tafel slopes of 41.8 and 46.7 mV dec-1 are achieved for MoWS2/CC and MoWS2/CNTY, respectively, by optimizing the density of the exposed active edge sites of vertically aligned MoWS2 on CNTY and CC. Furthermore, the catalyst electrodes demonstrate good electrocatalytic stability over 36 h. The proposed technique for fabricating high-performance, binder-free, and flexible catalyst electrodes is more accessible and faster than conventional methods.

KW - carbon cloths

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KW - molybdenum tungsten disulfide (MoWS)

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