Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry

Aldous, Iain; Hardwick, Laurence J.

doi:10.1002/anie.201601615

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Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry

Iain Aldous, Laurence J. Hardwick

Angewandte Chemie International Edition, Volume: 55, Issue: 29, Pages: 8254 - 8257

Swansea University Author: Iain Aldous

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DOI (Published version): 10.1002/anie.201601615

Abstract

The reduction of dioxygen in the presence of sodium cations can be tuned to give either sodium superoxide or sodium peroxide discharge products at the electrode surface. Control of the mechanistic direction of these processes may enhance the ability to tailor the energy density of sodium–oxygen batt...

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Published in:	Angewandte Chemie International Edition
ISSN:	1433-7851
Published:	Wiley 2016
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa51335
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first_indexed	2019-08-09T16:32:04Z
last_indexed	2023-02-22T03:59:19Z
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spelling	2023-02-21T16:36:35.0617115 v2 51335 2019-08-06 Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry 87867d675f1cd66804b1c6c2626cac24 Iain Aldous Iain Aldous true false 2019-08-06 CHEG The reduction of dioxygen in the presence of sodium cations can be tuned to give either sodium superoxide or sodium peroxide discharge products at the electrode surface. Control of the mechanistic direction of these processes may enhance the ability to tailor the energy density of sodium–oxygen batteries (NaO2: 1071 Wh kg−1 and Na2O2: 1505 Wh kg−1). Through spectroelectrochemical analysis of a range of non‐aqueous solvents, we describe the dependence of these processes on the electrolyte solvent and subsequent interactions formed between Na+ and O2−. The solvents ability to form and remove [Na+‐O2−]ads based on Gutmann donor number influences the final discharge product and mechanism of the cell. Utilizing surface‐enhanced Raman spectroscopy and electrochemical techniques, we demonstrate an analysis of the response of Na‐O2 cell chemistry with sulfoxide, amide, ether, and nitrile electrolyte solvents. Journal Article Angewandte Chemie International Edition 55 29 8254 8257 Wiley 1433-7851 11 7 2016 2016-07-11 10.1002/anie.201601615 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2023-02-21T16:36:35.0617115 2019-08-06T21:12:06.4239950 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Iain Aldous 1 Laurence J. Hardwick 2 0051335-07082019120122.pdf Aldous2019.pdf 2019-08-07T12:01:22.1970000 Output 1233055 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/
title	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
spellingShingle	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry Iain Aldous
title_short	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
title_full	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
title_fullStr	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
title_full_unstemmed	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
title_sort	Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry
author_id_str_mv	87867d675f1cd66804b1c6c2626cac24
author_id_fullname_str_mv	87867d675f1cd66804b1c6c2626cac24_***_Iain Aldous
author	Iain Aldous
author2	Iain Aldous Laurence J. Hardwick
format	Journal article
container_title	Angewandte Chemie International Edition
container_volume	55
container_issue	29
container_start_page	8254
publishDate	2016
institution	Swansea University
issn	1433-7851
doi_str_mv	10.1002/anie.201601615
publisher	Wiley
college_str	Faculty of Science and Engineering
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department_str	School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
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description	The reduction of dioxygen in the presence of sodium cations can be tuned to give either sodium superoxide or sodium peroxide discharge products at the electrode surface. Control of the mechanistic direction of these processes may enhance the ability to tailor the energy density of sodium–oxygen batteries (NaO2: 1071 Wh kg−1 and Na2O2: 1505 Wh kg−1). Through spectroelectrochemical analysis of a range of non‐aqueous solvents, we describe the dependence of these processes on the electrolyte solvent and subsequent interactions formed between Na+ and O2−. The solvents ability to form and remove [Na+‐O2−]ads based on Gutmann donor number influences the final discharge product and mechanism of the cell. Utilizing surface‐enhanced Raman spectroscopy and electrochemical techniques, we demonstrate an analysis of the response of Na‐O2 cell chemistry with sulfoxide, amide, ether, and nitrile electrolyte solvents.
published_date	2016-07-11T04:03:11Z
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score	11.013799

Solvent-Mediated Control of the Electrochemical Discharge Products of Non-Aqueous Sodium-Oxygen Electrochemistry

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