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Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors

Pullanchiyodan, Abhilash; Manjakkal, Libu; Dervin, Saoirse; Shakthivel, Dhayalan; Dahiya, Ravinder

Authors

Abhilash Pullanchiyodan

Saoirse Dervin

Dhayalan Shakthivel

Ravinder Dahiya



Abstract

Fabric-based supercapacitors have received considerable interest as energy storage devices for wearable systems. This work demonstrates the use of metal coated fabrics as the active material and current collector with nontoxic polyvinyl alcohol (PVA)-KCl gel electrolyte for wearable supercapacitors (SCs). To evaluate the influence of the metal coating, the electrochemical and capacitive studies are carried out and results are compared with a newly developed metal free graphite printed textile (cellulose-polyester) (CP-Gr) based SC. It is evident that the homemade graphite paste electrode printed on the top of Armor FR (Ni/Cu coated polyester fabric) (AFR-Gr) and Nora Dell (Ni/Cu/Ag coated polyamide) (ND-Gr) based SCs with PVA-KCl electrolyte exhibits the specific capacitance of 99.06 and 46.88 mF cm−2, respectively, at sweep rate of 5 mV s−1. These values are 24 and 52 times greater than that of CP-Gr based SC. The AFR-Gr and ND-Gr based SCs have an excellent energy density of 8.81 and 4.17 µWh cm−2, respectively, at 5 mV s−1. The fabricated ND-Gr based SC gives a stable response for more than 5000 charging/discharging cycles. Finally, the nontoxic nature of the PVA-KCl gel electrolyte is evaluated and confirmed through in vitro cytocompatibility assessment with adult human dermal fibroblasts cells for wearable applications.

Journal Article Type Article
Acceptance Date Feb 18, 2020
Online Publication Date Feb 28, 2020
Publication Date 2020-05
Deposit Date Jul 19, 2022
Publicly Available Date Jul 20, 2022
Journal Advanced Materials Technologies
Print ISSN 2365-709X
Electronic ISSN 2365-709X
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 5
Issue 5
Article Number 1901107
DOI https://doi.org/10.1002/admt.201901107
Keywords biocompatibility, fabric supercapacitors, gel electrolytes, graphite, metal nanoparticles
Public URL http://researchrepository.napier.ac.uk/Output/2890614

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