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.
Hillier, Nicholas
c684f55d-b076-43f9-94e4-9e718d1e217e
Yong, Sheng
688cbcf0-b32e-4b2b-9891-a0e0e1f59d71
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Beeby, Stephen
ba565001-2812-4300-89f1-fe5a437ecb0d
13 August 2021
Hillier, Nicholas
c684f55d-b076-43f9-94e4-9e718d1e217e
Yong, Sheng
688cbcf0-b32e-4b2b-9891-a0e0e1f59d71
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Beeby, Stephen
ba565001-2812-4300-89f1-fe5a437ecb0d
Hillier, Nicholas, Yong, Sheng, Cruden, Andrew and Beeby, Stephen
(2021)
Acetonitrile-free organic electrolyte for textile supercapacitor applications.
Journal of the Electrochemical Society, 168 (8), [080520].
(doi:10.1149/1945-7111/ac1a58).
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.
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Published date: 13 August 2021
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© 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
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Local EPrints ID: 450959
URI: http://eprints.soton.ac.uk/id/eprint/450959
ISSN: 0013-4651
PURE UUID: 6bec881c-ddc7-418c-9a91-fd7f2deddd9e
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Date deposited: 26 Aug 2021 16:32
Last modified: 01 Apr 2026 02:16
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Author:
Nicholas Hillier
Author:
Sheng Yong
Author:
Stephen Beeby
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