Fabrication of a flexible and stretchable three-dimensional conductor based on Au-Ni@graphene coated polyurethane sponge by electroless plating

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

3 Scopus Citations
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Author(s)

  • Songfang Zhao
  • Feng Liu
  • Bo Zhang
  • Ying Wang
  • Guoping Zhang
  • Rong Sun
  • Ching-Ping Wong

Detail(s)

Original languageEnglish
Pages (from-to)8135-8143
Journal / PublicationJournal of Materials Chemistry C
Volume6
Issue number30
Online published10 Jul 2018
Publication statusPublished - 14 Aug 2018

Abstract

Flexible and stretchable electronics, which could function properly under different deformations, have attracted extensive attention recently, due to their widespread application potential. Among them, flexible and stretchable conductors have played a significant role in bridging stretchable electronics (e.g., flexible strain sensors and stretchable energy storage devices) and measured targets (e.g., human motion detection and multifunctional output devices). Although various types of fabrication method for flexible conductors have been reported, the fabrication of stretchable conductors exhibiting stretchability, conductive stability, and durability remains a challenge. Here, we developed a flexible and stretchable three-dimensional (3D) conductor by the electroless plating technique. The prepared flexible and stretchable conductor combines two strengths including the excellent conductivity of 3D gold-nickel@graphene coated polyurethane sponge (Au-Ni@GPUS) conductive networks and the flexibility of casting encapsulated PDMS. The resistance of the conductor ranges from original 2.5 Ω to 4.0 Ω when the applied strain increased from 0% to 30% for the first stretching-releasing cycle. And after 1000 stretching-releasing cycles, the original resistance exhibited a small increase to 3.1 Ω, while the resistance under 30% applied strain was 6.0 Ω which well illustrates the conductive stability and durability. Besides, the resistance of the conductor is retained even after 1000 cycles of bending (the bending angle ranges from 0° to 180°) and twisting (the twisting angle ranges from 0° to 180°), confirming the excellent conductivity of the conductor. Additionally, the fabricated flexible and stretchable conductor has been successfully applied as a flexible interconnect of light-emitting diodes and a stretchable mobile phone charging interconnect.

Citation Format(s)

Fabrication of a flexible and stretchable three-dimensional conductor based on Au-Ni@graphene coated polyurethane sponge by electroless plating. / Han, Fei; Su, Xingyu; Huang, Mingqi; Li, Jinhui; Zhang, Yuan; Zhao, Songfang; Liu, Feng; Zhang, Bo; Wang, Ying; Zhang, Guoping; Sun, Rong; Wong, Ching-Ping.

In: Journal of Materials Chemistry C, Vol. 6, No. 30, 14.08.2018, p. 8135-8143.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review