Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/160014
Title: High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSₓ as a catalyst for the hydrogen evolution reaction
Authors: Iffelsberger, Christian
Pumera, Martin
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Iffelsberger, C. & Pumera, M. (2021). High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSₓ as a catalyst for the hydrogen evolution reaction. Journal of Materials Chemistry A, 9(38), 22072-22081. https://dx.doi.org/10.1039/D1TA05581J
Journal: Journal of Materials Chemistry A
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.
URI: https://hdl.handle.net/10356/160014
ISSN: 2050-7488
DOI: 10.1039/D1TA05581J
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2021 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ERI@N Journal Articles

SCOPUSTM   
Citations 50

5
Updated on Sep 19, 2023

Web of ScienceTM
Citations 50

4
Updated on Sep 20, 2023

Page view(s)

49
Updated on Sep 21, 2023

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.