Publication detail

Catalyst Formation and In Operando Monitoring of the Electrocatalytic Activity in Flow Reactors

IFFELSBERGER, C. WERT, S. MATYSIK, F. PUMERA, M.

Original Title

Catalyst Formation and In Operando Monitoring of the Electrocatalytic Activity in Flow Reactors

Type

journal article in Web of Science

Language

English

Original Abstract

Flow reactors are of increasing importance and have become crucial devices due to their wide application in chemical synthesis, electrochemical hydrogen evolution reaction (HER), or electrochemical waste water treatment. In many of these applications, catalyst materials such as transition-metal chalcogenides (TMCs) for the HER, provide the desired electrochemical reactivity for the HER. Generally, the flow electrolyzers' performance is evaluated as the overall output, but the decrease in activity of the electrolyzer is due to localized failure of the catalyst. Herein, we present a method for the spatially resolved (tens of micrometers) In Operando analysis of the catalytic activity under real operation conditions as well as the localized deposition of the catalyst in an operating model flow reactor. For these purposes, scanning electrochemical microscopy was applied for MoSx catalyst deposition and for localized tracking of the TMC activity with a resolution of 25 mu m. This approach offers detailed information about the catalytic performance and should find broad application for the characterization and optimization of flow reactor catalysis under real operational conditions.

Keywords

electrochemical additive manufacturing; electrodeposition; hydrogen evolution reaction; transition-metal chalcogenides; hydrodynamic scanning electrochemical microscopy

Authors

IFFELSBERGER, C.; WERT, S.; MATYSIK, F.; PUMERA, M.

Released

4. 8. 2021

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1944-8244

Periodical

ACS APPL MATER INTER

Year of study

13

Number

30

State

United States of America

Pages from

35777

Pages to

35784

Pages count

8

URL

https://pubs.acs.org/doi/10.1021/acsami.1c09127

BibTex

@article{BUT172549,
  author="Christian {Iffelsberger} and Stefan {Wert} and Frank-Michael {Matysik} and Martin {Pumera}",
  title="Catalyst Formation and In Operando Monitoring of the Electrocatalytic Activity in Flow Reactors",
  journal="ACS APPL MATER INTER",
  year="2021",
  volume="13",
  number="30",
  pages="35777--35784",
  doi="10.1021/acsami.1c09127",
  issn="1944-8244",
  url="https://pubs.acs.org/doi/10.1021/acsami.1c09127"
}