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

ACS Appl Mater Interfaces. 2019 Oct 16;11(41):37550-37558. doi: 10.1021/acsami.9b10383. Epub 2019 Oct 4.

Authors

Duc Anh Nguyen¹, Thi Suong Le¹, Dae Young Park^{1

2}, Dongseok Suh^{1

2}, Mun Seok Jeong^{1

2}

Affiliations

¹ Department of Energy Science , Sungkyunkwan University , Suwon 16419 , Republic of Korea.
² Center for Integrated Nanostructure Physics (CINAP) , Institute for Basic Science (IBS) , Suwon 16419 , Republic of Korea.

PMID: 31553157
DOI: 10.1021/acsami.9b10383

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.

Keywords: carbon cloths; carbon nanotube yarns; electrocatalysts; hydrogen evolution reaction (HER); molybdenum tungsten disulfide (MoWS2).