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Hydrophobic thiol coatings to facilitate a triphasic interface for carbon dioxide reduction to ethylene at gas diffusion electrodes

Hydrophobic thiol coatings to facilitate a triphasic interface for carbon dioxide reduction to ethylene at gas diffusion electrodes
Hydrophobic thiol coatings to facilitate a triphasic interface for carbon dioxide reduction to ethylene at gas diffusion electrodes
The electrochemical reduction of CO2 continues to see significant interest as a viable means of both producing important chemical materials and lowering carbon emissions. The primary challenge to making this process economically viable is the design of catalyst, electrode and reactor components that can selectively produce just one of the many possible CO2 reduction products. In this work, we report the use of hydrophobic 1-octadecanethiol coatings at copper coated gas diffusion electrodes to enhance the production of ethylene. This thiol coating gives a substantial increase in the production of ethylene at low current densities as well as a change in the rate determining step, as indicated by the substantial reduction in the Tafel slope. The observed changes to the CO2 reduction reaction indicate that the thiol layer provides a triphasic interface within the gas diffusion electrode catalyst layer.
0301-7249
375-387
Perry, Samuel
8e204d86-4a9c-4a5d-9932-cf470174648e
Mavrikis, Sotirios
6b5b53fb-a664-4c2e-b17d-5c27850d6ea9
Wegener, Moritz
e585873e-16c0-440c-b17f-5442f014415a
Nazarovs, Pāvels
85218d6a-4018-4786-aab0-ed028e1b2c2c
Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Ponce De Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Perry, Samuel
8e204d86-4a9c-4a5d-9932-cf470174648e
Mavrikis, Sotirios
6b5b53fb-a664-4c2e-b17d-5c27850d6ea9
Wegener, Moritz
e585873e-16c0-440c-b17f-5442f014415a
Nazarovs, Pāvels
85218d6a-4018-4786-aab0-ed028e1b2c2c
Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Ponce De Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c

Perry, Samuel, Mavrikis, Sotirios, Wegener, Moritz, Nazarovs, Pāvels, Wang, Ling and Ponce De Leon, Carlos (2021) Hydrophobic thiol coatings to facilitate a triphasic interface for carbon dioxide reduction to ethylene at gas diffusion electrodes. Faraday Discussions, 230, 375-387. (doi:10.1039/D0FD00133C).

Record type: Article

Abstract

The electrochemical reduction of CO2 continues to see significant interest as a viable means of both producing important chemical materials and lowering carbon emissions. The primary challenge to making this process economically viable is the design of catalyst, electrode and reactor components that can selectively produce just one of the many possible CO2 reduction products. In this work, we report the use of hydrophobic 1-octadecanethiol coatings at copper coated gas diffusion electrodes to enhance the production of ethylene. This thiol coating gives a substantial increase in the production of ethylene at low current densities as well as a change in the rate determining step, as indicated by the substantial reduction in the Tafel slope. The observed changes to the CO2 reduction reaction indicate that the thiol layer provides a triphasic interface within the gas diffusion electrode catalyst layer.

Text
Hydrophobic Thiol Coatings to Facilitate a Triphasic Interface for Carbon Dioxide Reduction to Ethylene at Gas Diffusion Electrodes - Accepted Manuscript
Restricted to Repository staff only until 4 February 2022.
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More information

Accepted/In Press date: 3 February 2021
e-pub ahead of print date: 4 February 2021
Published date: 4 February 2021

Identifiers

Local EPrints ID: 446967
URI: http://eprints.soton.ac.uk/id/eprint/446967
ISSN: 0301-7249
PURE UUID: feb56208-45d1-47b3-9070-57b575deab6f
ORCID for Ling Wang: ORCID iD orcid.org/0000-0002-2894-6784
ORCID for Carlos Ponce De Leon: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 01 Mar 2021 17:30
Last modified: 03 Aug 2021 01:38

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Contributors

Author: Samuel Perry
Author: Sotirios Mavrikis
Author: Moritz Wegener
Author: Pāvels Nazarovs
Author: Ling Wang ORCID iD

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