A highly sensitive electrochemical sensor of polysulfides in polymer lithium-sulfur batteries
A highly sensitive electrochemical sensor of polysulfides in polymer lithium-sulfur batteries
A novel and highly sensitive electrochemical sensor is used here to detect polysulfides as intermediates formed during cycling of a solid polymer lithium-sulfur cell. The formation of polysulfides is found to produce dramatic changes in the shape and magnitude of the voltammetric current of the sensor. Impedance analysis is also applied to quantify electrochemical properties such as charge-transfer and Warburg resistances of the polysulfide species. This new experimental set-up enables a rigorous analysis of the electrochemical properties of polysulfides and sulfur species, and it is used here to elucidate the fundamental cause of the effect of the choice of lithium salt (LiTFSI or LiFSI) on solid polymer Li-S cell performance.
Meddings, Nina
3018b390-3284-4da0-a9c6-4be738803717
Judez, Xabier
61382e4c-0405-4703-93c3-db351760ba43
Li, Chunmei
b58e5015-5de1-43cd-af4b-4ad2bd30e489
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37
5 May 2020
Meddings, Nina
3018b390-3284-4da0-a9c6-4be738803717
Judez, Xabier
61382e4c-0405-4703-93c3-db351760ba43
Li, Chunmei
b58e5015-5de1-43cd-af4b-4ad2bd30e489
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37
Meddings, Nina, Judez, Xabier, Li, Chunmei and Garcia-Araez, Nuria
(2020)
A highly sensitive electrochemical sensor of polysulfides in polymer lithium-sulfur batteries.
Journal of the Electrochemical Society, 167 (8), [080520].
(doi:10.1149/1945-7111/ab8ce9).
Abstract
A novel and highly sensitive electrochemical sensor is used here to detect polysulfides as intermediates formed during cycling of a solid polymer lithium-sulfur cell. The formation of polysulfides is found to produce dramatic changes in the shape and magnitude of the voltammetric current of the sensor. Impedance analysis is also applied to quantify electrochemical properties such as charge-transfer and Warburg resistances of the polysulfide species. This new experimental set-up enables a rigorous analysis of the electrochemical properties of polysulfides and sulfur species, and it is used here to elucidate the fundamental cause of the effect of the choice of lithium salt (LiTFSI or LiFSI) on solid polymer Li-S cell performance.
Text
article sensor PEO Li-S JES-R2e
- Accepted Manuscript
More information
Accepted/In Press date: 21 April 2020
e-pub ahead of print date: 24 April 2020
Published date: 5 May 2020
Additional Information:
Publisher Copyright:
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
Identifiers
Local EPrints ID: 440906
URI: http://eprints.soton.ac.uk/id/eprint/440906
ISSN: 0013-4651
PURE UUID: 36c51c53-4dae-4624-b50a-828a5198d405
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Date deposited: 22 May 2020 16:37
Last modified: 17 Mar 2024 03:31
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Contributors
Author:
Nina Meddings
Author:
Xabier Judez
Author:
Chunmei Li
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