Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105871
Title: Multimaterial 3D-printed water electrolyzer with earth-abundant electrodeposited catalysts
Authors: Ambrosi, Adriano
Pumera, Martin
Keywords: Science::Chemistry
3D-printing
Electrochemistry
Issue Date: 2018
Source: Ambrosi, A., & Pumera, M. (2018). Multimaterial 3D-printed water electrolyzer with earth-abundant electrodeposited catalysts. ACS Sustainable Chemistry & Engineering, 6(12), 16968-16975. doi:10.1021/acssuschemeng.8b04327
Series/Report no.: ACS Sustainable Chemistry & Engineering
Abstract: Additive manufacturing (AM) is reaching a stage of development that enables high throughput fabrication of end products/devices. An important contribution to the advancement of this technology is given by the possibility to combine different materials into a single printing process or integrate diverse technologies for the fabrication of different components. Here we show how a prototype water electrolyzer can be fabricated using two different AM technologies, named selective laser melting and fused deposition modeling to produce the metallic components (electrodes) and the liquid/gas handling components (cells) of the electrolyzer, respectively. Both components are produced following a precise design which enables their perfect integration and assembly. The electrodes are produced in stainless steel which can be directly used for both the cathodic hydrogen evolution reaction (HER) and the anodic oxygen evolution reaction. However, we propose to introduce a simple and rapid electrochemical surface modification of the steel electrodes with more efficient earth-abundant catalysts in order to enhance the overall water splitting performance. For the HER we deposited a thin film of Ni-MoS2 composite while a NiFe double hydroxide film is deposited on the anode. Scanning electron microscopy combined with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy are employed to characterize the electrode surface before and after the electrodeposition with the catalysts. Electrochemical testing is then used to optimize the composition of the catalysts by verifying the catalytic performance of the electrodes. As proof-of-concept, an electrochemical testing is performed with the 3D printed and assembled device.
URI: https://hdl.handle.net/10356/105871
http://hdl.handle.net/10220/50038
DOI: 10.1021/acssuschemeng.8b04327
Rights: © 2018 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acssuschemeng.8b04327
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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