Enhancing the hydrogen evolution reaction on MoS2 flakes by cold plasma treatment

Wang，Jue1,2,3; Feng，Xichen4; Hedman，Daniel2; Wu，Xiaohua5; Pan，Haiyang4; Zhang，Qinfang1

2022-04-01

10.1016/j.elecom.2022.107250

ELECTROCHEMISTRY COMMUNICATIONS   影响因子和分区

1388-2481

1873-1902

The edge sites of molybdenum disulfide (MoS) have high catalytic activity for the hydrogen evolution reaction (HER). However, the ratio of edge sites to those on the surface of MoS is generally low, which limits the catalytic activity. Thus, efficient and rapid creation of catalytically active sites on the inert MoS basal plane is important. Cold plasma treatment can achieve such a result. Here we report the use of a cold plasma method to introduce defects and local phase transformation of the inert 2H phase of MoS. After cold plasma treatment with argon or oxygen, the previously inert MoS basal plane shows outstanding performance. The overpotential, at a high current density of 300 mA cm, was reduced by 30% (18%) from 373 mV to 261 mV (307 mV) after argon (oxygen) cold plasma treatment. Our results clearly show that argon and oxygen cold plasma treatments have the effect of activating the inert 2H phase of MoS. This is a promising method for the creation of active sites on two-dimensional materials.

Cold plasma Electrocatalyst Hydrogen evolution Molybdenum disulfide

SCI ; EI

英语

其他

National Natural Science Foundation of China[11904311,12104391] ; Yancheng Institute of Technology[xjr2019056] ; Institute for Basic Science[IBS-R019-D1]

Electrochemistry

Electrochemistry

WOS:000803918100002

ELSEVIER SCIENCE INC

20221111773994

Argon ; Catalyst activity ; Electrocatalysts ; Layered semiconductors ; Oxygen ; Plasma applications ; Sulfur compounds

Semiconducting Materials:712.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Plasma Physics:932.3

CHEMISTRY

2-s2.0-85125961102

Scopus

1.Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province,Yancheng Institute of Technology,Yancheng,224051,China
2.Center for Multidimensional Carbon Materials,Institute for Basic Science (IBS),Ulsan,44919,South Korea
3.Department of Materials Science and Engineering,Ulsan National Institute of Science and Technology (UNIST),Ulsan,44919,South Korea
4.School of Materials Science and Engineering,Yancheng Institute of Technology,Yancheng,224051,China
5.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China

Wang，Jue,Feng，Xichen,Hedman，Daniel,et al. Enhancing the hydrogen evolution reaction on MoS2 flakes by cold plasma treatment[J]. ELECTROCHEMISTRY COMMUNICATIONS,2022,137.

Wang，Jue,Feng，Xichen,Hedman，Daniel,Wu，Xiaohua,Pan，Haiyang,&Zhang，Qinfang.(2022).Enhancing the hydrogen evolution reaction on MoS2 flakes by cold plasma treatment.ELECTROCHEMISTRY COMMUNICATIONS,137.

Wang，Jue,et al."Enhancing the hydrogen evolution reaction on MoS2 flakes by cold plasma treatment".ELECTROCHEMISTRY COMMUNICATIONS 137(2022).