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

Authors

  • Norawich Keawploy Metallurgical Engineering Department, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand
  • Radhakrishnan Venkatkarthick Research Unit of Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand
  • Panyawat Wangyao Metallurgical Engineering Department, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand
  • Jiaqian Qin Research Unit of Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand

Keywords:

Screen printing, Graphene, CNT, Cotton, Flexible supercapacitor

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 are prepared via a screen-printing method using the carbonaceous nanomaterials such 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 (<10 Ω) along with superior mass loading (20-30 mg.cm-2). On the basis of the performance of cotton electrodes prepared, an all-solid-state flexible supercapacitor device was successfully fabricated which exhibits a high specific areal capacitance of 677.12 mF.cm-2 at 0.0125 mA.cm-2 for a suitable electrode composition (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 different bending 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.

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Author Biographies

Norawich Keawploy, Metallurgical Engineering Department, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand

Metallurgical Engineering Department, Engineering Faculty

Radhakrishnan Venkatkarthick, Research Unit of Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand

Center of Excellence in Smart Wearable Devices

Panyawat Wangyao, Metallurgical Engineering Department, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand

Metallurgical Engineering Department, Engineering Faculty

Jiaqian Qin, Research Unit of Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand

Center of Excellence in Smart Wearable Devices

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Published

2020-12-22

How to Cite

[1]
N. Keawploy, R. Venkatkarthick, P. Wangyao, and J. Qin, “Screen printed textile electrodes using graphene and carbon nanotubes with silver for flexible supercapacitor applications”, J. Met. Mater. Miner., vol. 30, no. 4, pp. 39-44, Dec. 2020.

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Original Research Articles