Publication detail

High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSx as a catalyst for the hydrogen evolution reaction

IFFELSBERGER, C. PUMERA, M.

Original Title

High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSx as a catalyst for the hydrogen evolution reaction

Type

journal article in Web of Science

Language

English

Original Abstract

High-resolution electrochemical additive manufacturing follows the principle of additive manufacturing (AM) in that new devices are constructed by electrochemically driven, localized and layered deposition of material. As for AM, an important limitation is the deposition of functional materials such as catalyst materials, which are mandatory for their incorporation into real electrochemical devices. As catalyst materials, transition metal chalcogenides attracted considerable attention due to their potential to replace platinum as a catalyst in the electrochemical hydrogen evolution reaction (HER). While considerable effort has been devoted to the preparation and engineering of 2D structures, their microstructuring is still a major challenge. Here, using MoSx as a functional material for HER catalysis as an example, we demonstrate that high-resolution electrochemical additive manufacturing leads to printing of microstructured highly active electrochemical devices. A one-step process for localized electrochemical deposition and microstructuring of MoSx with controlled chemical composition using scanning electrochemical microscopy (SECM) is demonstrated. The resulting materials were investigated by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and SECM. Practical applicability is demonstrated by large-scale printing and investigation of their performance as catalysts for energy conversion using linear sweep voltammetry. This method of high-resolution electrochemical additive fabrication of active materials will have wide application as it can be extended for the deposition of active materials on any conductive surface.

Keywords

TRANSITION-METAL DICHALCOGENIDES; DIRECT-MODE; DEPOSITION; MICROSCOPY; ELECTRODES; PERFORMANCE; GRAPHENE; GROWTH; FILMS; GOLD

Authors

IFFELSBERGER, C.; PUMERA, M.

Released

5. 10. 2021

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

2050-7496

Periodical

Journal of Materials Chemistry A

Year of study

9

Number

38

State

United Kingdom of Great Britain and Northern Ireland

Pages from

22072

Pages to

22081

Pages count

10

URL

https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA05581J

BibTex

@article{BUT173091,
  author="Christian {Iffelsberger} and Martin {Pumera}",
  title="High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSx as a catalyst for the hydrogen evolution reaction",
  journal="Journal of Materials Chemistry A",
  year="2021",
  volume="9",
  number="38",
  pages="22072--22081",
  doi="10.1039/d1ta05581j",
  issn="2050-7496",
  url="https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA05581J"
}