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

Christian Iffelsberger, Martin Pumera

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

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 MoSxas 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 MoSxwith 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.

Original languageEnglish
Pages (from-to)22072-22081
Number of pages10
JournalJournal of Materials Chemistry A
Volume9
Issue number38
DOIs
Publication statusPublished - 2021 Oct 14

Bibliographical note

Funding Information:
acknowledges the nancial support from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 888797. C. I. gratefully acknowledges the CzechNanoLab project LM2018110 funded by MEYS CR for the nancial support of the measurements/sample fabrication at the CEITEC Nano Research Infrastructure. The authors thank Dr Gao from CEITEC BUT for the collaboration with SEM and EDS measurements.

Funding Information:
The M. P. acknowledges the financial support from the Grant Agency of the Czech Republic (GACR EXPRO: 19-26896X). C. I. acknowledges the financial support from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 888797. C. I. gratefully acknowledges the CzechNanoLab project LM2018110 funded by MEYS CR for the financial support of the measurements/sample fabrication at the CEITEC Nano Research Infrastructure. The authors thank Dr Gao from CEITEC BUT for the collaboration with SEM and EDS measurements.

Funding Information:
The M. P. acknowledges the nancial support from the Grant Agency of the Czech Republic (GACR EXPRO: 19-26896X). C. I.

Publisher Copyright:
© The Royal Society of Chemistry 2021.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Fingerprint

Dive into the research topics of 'High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSxas a catalyst for the hydrogen evolution reaction'. Together they form a unique fingerprint.

Cite this