Publication detail

Corrosion of catalyst in high resolution: Layered transition metal dichalcogenides electrocatalyse water splitting and corrode during the process

WERT, S. IFFELSBERGER, C. NOVCIC, K. PUMERA, M.

Original Title

Corrosion of catalyst in high resolution: Layered transition metal dichalcogenides electrocatalyse water splitting and corrode during the process

Type

journal article in Web of Science

Language

English

Original Abstract

Among the vast field of 2D materials, transition metal dichalcogenides (TMDs) have emerged as promising materials for electrocatalysis. Many of them, such as MoS2, were found to be potent electrocatalysts for the hydrogen evolution reaction (HER), which is vital for making electrochemical water splitting, a green route for obtaining hydrogen, economically feasible. In this work, we investigated the morphological and (electro)chemical changes undergoing in synthetic bulk crystals of MoS2, TiS2, and TiSe2 during HER. Local electrochemical changes were observed using scanning electrochemical microscopy (SECM). Scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM) were utilized to monitor morphological changes. Furthermore, the chemical composition of the materials was analyzed using X-ray photoelectron spectroscopy (XPS) and electron dispersive X-ray spectroscopy (EDS). Changes in the atomic structure were studied using X-ray diffraction (XRD). Our experiments showed different degrees of corrosion occurring in these materials, with the magnitude of corrosion decreasing in the order TiSe2 > TiS2 > MoS2. These findings are of tremendous importance for the development of transition metal dichalcogenide electrocatalysts, which are touted to replace platinum for hydrogen evolution reaction. (C) 2022 Elsevier Inc. All rights reserved.

Keywords

Transition metal dichalcogenides; Scanning electrochemical microscopy; 2D materials; Titanium disulfide; Titanium diselenide; Molybdenum disulfide; Hydrogen; Corrosion

Authors

WERT, S.; IFFELSBERGER, C.; NOVCIC, K.; PUMERA, M.

Released

1. 12. 2022

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE

Location

SAN DIEGO

ISBN

1090-2694

Periodical

Journal of Catalysis

Year of study

416

Number

1

State

United States of America

Pages from

85

Pages to

91

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0021951722004432?via%3Dihub

BibTex

@article{BUT181616,
  author="Stefan {Wert} and Christian {Iffelsberger} and Katarina {Novcic} and Martin {Pumera}",
  title="Corrosion of catalyst in high resolution: Layered transition metal dichalcogenides electrocatalyse water splitting and corrode during the process",
  journal="Journal of Catalysis",
  year="2022",
  volume="416",
  number="1",
  pages="85--91",
  doi="10.1016/j.jcat.2022.10.023",
  issn="1090-2694",
  url="https://www.sciencedirect.com/science/article/pii/S0021951722004432?via%3Dihub"
}