Screen printed textile electrodes using graphene and carbon nanotubes with silver for flexible supercapacitor applications

Authors

Norawich Keawploy
Radhakrishnan Venkatkarthick
Panyawat Wangyao
Jiaqian Qin

Publication Date

2020-12-01

Abstract

The eco-friendly conductive cotton textile is promising alternatives for the flexible substrates in wearable devices since the cotton is as an inexpensive natural fabric material and compatible in modern portable electronics with adequate electrical conductivity. In this work, flexible conductive cotton-based electrodes areprepared via a screen-printing method using the carbonaceous nanomaterialssuch as carbon nanotubes (CNTs) and graphene with an additional component of conductive silver (Ag) powder and textile ink. The prepared conductive cotton electrodes exhibit lower sheet resistance (<10Ω) along with superior mass loading (20-30mgcm-2). On the basis of the performance of cottonelectrodes prepared, an all-solid-state flexible supercapacitor device was successfully fabricated whichexhibits a high specific areal capacitance of 677.12 mFcm-2at 0.0125 mAcm-2 for a suitable electrodecomposition (60% of Ag and 40% CNTs) using a PVA-KOH gel electrolyte. The flexible device endures a stable electrochemical performance under severe mechanical deformation using differentbending angles (0, 30, 45, 60and 90) of the device and possesses excellent cyclic stability with the capacitance retention of ~80% even after 3000 CV cycles.

First Page

39

Last Page

44

Recommended Citation

Keawploy, Norawich; Venkatkarthick, Radhakrishnan; Wangyao, Panyawat; and Qin, Jiaqian (2020) "Screen printed textile electrodes using graphene and carbon nanotubes with silver for flexible supercapacitor applications," Journal of Metals, Materials and Minerals: Vol. 30: No. 4, Article 4.
Available at: https://digital.car.chula.ac.th/jmmm/vol30/iss4/4