Publication detail

MoS2 versatile spray-coating of 3D electrodes for the hydrogen evolution reaction

GUSMÃO, R. SOFER, Z. MARVAN, P. PUMERA, M.

Original Title

MoS2 versatile spray-coating of 3D electrodes for the hydrogen evolution reaction

Type

journal article in Web of Science

Language

English

Original Abstract

A facile one-step MoS2 spray-coating method was applied to a range of rigid, flexible, porous and 3D printed carbon-based surfaces, yielding high loadings in MoS2 flakes. The characterization of MoS2 flakes from a commercial lubricant spray reveals up to micron-scale bulk sheets of the layered material, constituted in its majority by the semiconducting 2H polymorph, in the presence of the metallic 1T phase. Consequently, the process generates MoS2 spray-coated surfaces with improved hydrogen evolution reaction (HER) catalytic performance. In the case of carbon-based screen printed electrodes (SPE), a short-term thermal post-treatment of the MoS2 spray-coated SPE had a further beneficial effect in the HER overpotential. The MoS2 spray-coated 3D metallic meshes held the lowest HER overpotential of the series. Finally, MoS2 spray-coated 3D printed electrodes yielded improved heterogeneous charge transfer and a 500 mV shift in the required overpotential at a current density of -10 mA cm(-2). The MoS2 spray-coated 3D printed electrode displayed an abundant coverage at the inner, external and planar zones of electrodes by the MoS2 sheets, even after long-term operation conditions. These outcomes can be beneficial for future tailoring of MoS2 spray-coated surfaces and their implementation in energy conversion technologies.

Keywords

BLACK PHOSPHORUS; LAYER MOS2; PERFORMANCE; NANOSHEETS; EFFICIENT

Authors

GUSMÃO, R.; SOFER, Z.; MARVAN, P.; PUMERA, M.

Released

28. 5. 2019

ISBN

2040-3372

Periodical

Nanoscale

Year of study

11

Number

20

State

United Kingdom of Great Britain and Northern Ireland

Pages from

9888

Pages to

9895

Pages count

8

URL

https://pubs.rsc.org/en/content/articlelanding/2019/NR/C9NR01876J#!divAbstract

BibTex

@article{BUT158493,
  author="Rui {Gusmão} and Zdeněk {Sofer} and Petr {Marvan} and Martin {Pumera}",
  title="MoS2 versatile spray-coating of 3D electrodes for the hydrogen evolution reaction",
  journal="Nanoscale",
  year="2019",
  volume="11",
  number="20",
  pages="9888--9895",
  doi="10.1039/c9nr01876j",
  issn="2040-3372",
  url="https://pubs.rsc.org/en/content/articlelanding/2019/NR/C9NR01876J#!divAbstract"
}