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Acetonitrile-free organic electrolyte for textile supercapacitor applications

Acetonitrile-free organic electrolyte for textile supercapacitor applications
Acetonitrile-free organic electrolyte for textile supercapacitor applications
Textile supercapacitors are a key enabler of future, wireless, textile based smart wearables. With high power densities and long cycle lives, textile supercapacitors can be readily paired with energy harvesters to power the wearable technology. However, the energy density of these devices remains low (of the order of μWh) and work to increase this through improvements in the electrode design are requiring ever more complex materials and manufacturing processes. This work presents a novel and safe organic electrolyte that can increase the energy density of a simple symmetric activated carbon textile supercapacitor by ~ 8 times when compared to previous devices utilizing an identical substrate and set of electrodes. With a capacitance of 34.0 mF.cm-2 and an energy density of 18.9 μWh.cm-2, this device showed excellent performance. The device also underwent a rarely seen test for calendar ageing and was found to still exhibit 48% capacitance retention after two months of calendar ageing. This novel electrolyte enables the production of high energy density electric double layer textile supercapacitors without the need for pseudocapacitve or battery-like electrode materials.
0013-4651
Hillier, Nicholas, David George
6bde7893-a2db-4edd-9e12-a8ab17aa3702
Yong, Sheng
688cbcf0-b32e-4b2b-9891-a0e0e1f59d71
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Beeby, Stephen
ba565001-2812-4300-89f1-fe5a437ecb0d
Hillier, Nicholas, David George
6bde7893-a2db-4edd-9e12-a8ab17aa3702
Yong, Sheng
688cbcf0-b32e-4b2b-9891-a0e0e1f59d71
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Beeby, Stephen
ba565001-2812-4300-89f1-fe5a437ecb0d

Hillier, Nicholas, David George, Yong, Sheng, Cruden, Andrew and Beeby, Stephen (2021) Acetonitrile-free organic electrolyte for textile supercapacitor applications. Journal of the Electrochemical Society, 168 (8), [080520].

Record type: Article

Abstract

Textile supercapacitors are a key enabler of future, wireless, textile based smart wearables. With high power densities and long cycle lives, textile supercapacitors can be readily paired with energy harvesters to power the wearable technology. However, the energy density of these devices remains low (of the order of μWh) and work to increase this through improvements in the electrode design are requiring ever more complex materials and manufacturing processes. This work presents a novel and safe organic electrolyte that can increase the energy density of a simple symmetric activated carbon textile supercapacitor by ~ 8 times when compared to previous devices utilizing an identical substrate and set of electrodes. With a capacitance of 34.0 mF.cm-2 and an energy density of 18.9 μWh.cm-2, this device showed excellent performance. The device also underwent a rarely seen test for calendar ageing and was found to still exhibit 48% capacitance retention after two months of calendar ageing. This novel electrolyte enables the production of high energy density electric double layer textile supercapacitors without the need for pseudocapacitve or battery-like electrode materials.

Text
FinalRevision_Hillier_JECS_ACN_Free_Organic_Electrolyte - Accepted Manuscript
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More information

Published date: 13 August 2021

Identifiers

Local EPrints ID: 450959
URI: http://eprints.soton.ac.uk/id/eprint/450959
ISSN: 0013-4651
PURE UUID: 6bec881c-ddc7-418c-9a91-fd7f2deddd9e
ORCID for Nicholas, David George Hillier: ORCID iD orcid.org/0000-0002-3544-8329
ORCID for Sheng Yong: ORCID iD orcid.org/0000-0002-8588-5981
ORCID for Andrew Cruden: ORCID iD orcid.org/0000-0003-3236-2535
ORCID for Stephen Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 26 Aug 2021 16:32
Last modified: 26 Nov 2021 03:12

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Contributors

Author: Nicholas, David George Hillier ORCID iD
Author: Sheng Yong ORCID iD
Author: Andrew Cruden ORCID iD
Author: Stephen Beeby ORCID iD

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