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A critical evaluation of electrode thickness effects and side reactions on electrolytes for aluminium-sulfur batteries

A critical evaluation of electrode thickness effects and side reactions on electrolytes for aluminium-sulfur batteries
A critical evaluation of electrode thickness effects and side reactions on electrolytes for aluminium-sulfur batteries
The high abundance and low cost of aluminum and sulfur make the Al–S battery an attractive combination. However, significant improvements in performance are required, and increasing the thickness and sulfur content of the sulfur electrodes is critical for the development of batteries with competitive specific energies. This work concerns the development of sulfur electrodes with the highest sulfur content (60 wt %) reported to date for an Al–S battery system and a systematic study of the effect of the sulfur electrode thickness on battery performance. If low‐cost electrolytes made from acetamide or urea are used, slow mass transport of the electrolyte species is identified as the main cause of the poor sulfur utilization when the electrode thickness is decreased, whereas complete sulfur utilization is achieved with a less viscous ionic liquid. In addition, the analysis of very thin electrodes reveals the occurrence of degradation reactions in the low‐cost electrolytes. The new analysis method is ideal for evaluating the stability and mass transport limitations of novel electrolytes for Al–S batteries.
1864-5631
Lampkin, John
509a899a-1400-46e8-becd-4af728704bcf
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Furness, Liam
146129ff-d855-4d8f-a098-34e178fba676
Raccichini, Rinaldo
7f943ecf-6b1b-4e4a-b222-8f3c27e679df
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37
Lampkin, John
509a899a-1400-46e8-becd-4af728704bcf
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Furness, Liam
146129ff-d855-4d8f-a098-34e178fba676
Raccichini, Rinaldo
7f943ecf-6b1b-4e4a-b222-8f3c27e679df
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37

Lampkin, John, Li, He, Furness, Liam, Raccichini, Rinaldo and Garcia-Araez, Nuria (2020) A critical evaluation of electrode thickness effects and side reactions on electrolytes for aluminium-sulfur batteries. ChemSusChem. (doi:10.1002/cssc.202000447).

Record type: Article

Abstract

The high abundance and low cost of aluminum and sulfur make the Al–S battery an attractive combination. However, significant improvements in performance are required, and increasing the thickness and sulfur content of the sulfur electrodes is critical for the development of batteries with competitive specific energies. This work concerns the development of sulfur electrodes with the highest sulfur content (60 wt %) reported to date for an Al–S battery system and a systematic study of the effect of the sulfur electrode thickness on battery performance. If low‐cost electrolytes made from acetamide or urea are used, slow mass transport of the electrolyte species is identified as the main cause of the poor sulfur utilization when the electrode thickness is decreased, whereas complete sulfur utilization is achieved with a less viscous ionic liquid. In addition, the analysis of very thin electrodes reveals the occurrence of degradation reactions in the low‐cost electrolytes. The new analysis method is ideal for evaluating the stability and mass transport limitations of novel electrolytes for Al–S batteries.

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More information

Accepted/In Press date: 15 April 2020
e-pub ahead of print date: 17 April 2020

Identifiers

Local EPrints ID: 439630
URI: http://eprints.soton.ac.uk/id/eprint/439630
ISSN: 1864-5631
PURE UUID: 93d752c9-b423-4d30-8647-343b4572e25c
ORCID for Nuria Garcia-Araez: ORCID iD orcid.org/0000-0001-9095-2379

Catalogue record

Date deposited: 28 Apr 2020 16:35
Last modified: 26 Nov 2021 06:15

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Contributors

Author: John Lampkin
Author: He Li ORCID iD
Author: Liam Furness
Author: Rinaldo Raccichini

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