“One for two” strategy of fully integrated textile based supercapacitor powering an ultra-sensitive pressure sensor for wearable applications

Gunasekaran, Sivagaami Sundari and Veeralingam, Sushmitha and Badhulika, Sushmee (2022) “One for two” strategy of fully integrated textile based supercapacitor powering an ultra-sensitive pressure sensor for wearable applications. Journal of Energy Storage, 48. pp. 1-10. ISSN 2352-152X

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Textile-based energy storage devices help realize the full potential of flexible electronics as they combine the functionality of wearable devices with the inherent high-power density and fast charging/discharging capability of supercapacitors. In this work, Nickel di-selenide (NiSe2) is grown on carbon cloth (CC) via a facile one-pot hydrothermal technique and is used for supercapacitor and pressure sensor to demonstrate a textile-based fully integrated system. In a three-electrode configuration, the NiSe2 electrode produces a half-cell specific capacitance of 980 Fg−1 at 1 Ag−1, indicating its high-rate capability. Further, the NiSe2 electrode is combined with activated carbon (AC) electrodes generated from biomass to construct an asymmetric supercapacitor device (ASC) with a 1.6 V of output voltage. The ASC device delivers maximum specific energy of 50 Whkg−1 at a current density of 1 Ag−1 and a maximum specific power of 900 Wkg−1 at 10 Ag−1. An ultra-sensitive pressure sensor is fabricated by sandwiching the NiSe2 grown carbon cloth between thin layers of PDMS, which exhibits a sensitivity of 0.91 kPa−1 in the wide dynamic pressure range of 1– 80 kPa−1. An exceptional mechanical stability is obtained for an unloading/loading of 1 kPa of pressure for 5000 cycles. Further, it is powered using the NiSe2/CC || AC/CC AFSC for steady and reliable detection of radial pulse pressure on the human wrist in real-time. This work paves a new path in exploring the potential of textiles when combined with nanomaterials to develop low-cost, self-powered healthcare systems for real-time monitoring of health parameters. © 2022 Elsevier Ltd

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IITH Creators:
IITH CreatorsORCiD
Badhulika, Sushmeehttps://orcid.org/0000-0003-3237-3031
Item Type: Article
Additional Information: SB acknowledges financial assistance from Science and Engineering Research Board (SERB) grant SB/WEA-03/2017 .
Uncontrolled Keywords: All-in-one textile system; Carbon cloth; Hydrothermal; NiSe2; Pressure sensor; Supercapacitor
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 22 Jul 2022 09:13
Last Modified: 22 Jul 2022 09:13
URI: http://raiith.iith.ac.in/id/eprint/9527
Publisher URL: http://doi.org/10.1016/j.est.2022.103994
OA policy: https://v2.sherpa.ac.uk/id/publication/35361
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