Ultraflexible and robust graphene supercapacitors printed on textiles for wearable electronics applications.

Abdelkader, A.M., Karim, N., Vallés, C., Afroj, S., Novoselov, K.S. and Yeates, S.G., 2017. Ultraflexible and robust graphene supercapacitors printed on textiles for wearable electronics applications. 2D Materials, 4 (3).

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DOI: 10.1088/2053-1583/aa7d71

Abstract

Printed graphene supercapacitors have the potential to empower tomorrow’s wearable electronics. We report a solid-state flexible supercapacitor device printed on textiles using graphene oxide ink and a screen-printing technique. After printing, graphene oxide was reduced in situ via a rapid electrochemical method avoiding the use of any reducing reagents that may damage the textile substrates. The printed electrodes exhibited excellent mechanical stability due to the strong interaction between the ink and textile substrate. The unique hierarchical porous structure of the electrodes facilitated ionic diffusion and maximised the surface area available for the electrolyte/ active material interface. The obtained device showed outstanding cyclic stability over 10 000 cycles and maintained excellent mechanical flexibility, which is necessary for wearable applications. The simple printing technique is readily scalable and avoids the problems associated with fabricating supercapacitor devices made of conductive yarn, as previously reported in the literature.

Item Type:Article
ISSN:2053-1583
Additional Information:This is an author-created, un-copyedited version of an article accepted for publication/published in 2D Materials. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/2053-1583/aa7d71
Uncontrolled Keywords:graphene; supercapacitors; wearable devices; screen printing
Group:Faculty of Science & Technology
ID Code:29910
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:26 Oct 2017 15:26
Last Modified:26 Oct 2017 15:26

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