Highly Stretchable Fiber-Shaped Supercapacitors Based on Ultrathin Gold Nanowires with Double-Helix Winding Design

Yunmeng Zhao, Dashen Dong, Yan Wang, Shu Gong, Tiance An, Lim Wei Yap, Wenlong Cheng

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The ability of developing highly durable fiber-shaped electronic devices is crucial for next-generation smart textile electronics. Past several years have witnessed encouraging progress made in stretchable fiber-shaped supercapacitors using carbon materials, transition metal oxides, and conducting polymers. Here, we report a dry-spun strategy to produce scalable ultrathin gold nanowire-based fibers, which can lead to highly stretchable fiber-based supercapacitors using a double-helix winding design. Hildebrand's and Hansen's solubility parameters of gold nanowire-binding oleylamine ligands match those of styrene-ethylene/butylene-styrene and tetrahydrofuran, enabling the formation of high-quality dry-spun fibers. In conjunction with conductivity enhancement by electroless plating and pseudocapacitance by polyaniline, we obtained fiber-shaped supercapacitors stretchable up to 360% with a capacitance of 16.80 mF cm-2. The capacitance retention is about 85% after 2000 cycles of 0-200-0% stretching/releasing. Our fiber capacitors can be woven into an everyday glove, with negligible capacitance changes for normal finger movements.

Original languageEnglish
Pages (from-to)42612-42620
Number of pages9
JournalACS Applied Materials & Interfaces
Volume10
Issue number49
DOIs
Publication statusPublished - 12 Dec 2018

Keywords

  • dry spinning
  • fibers
  • gold nanowires
  • stretchable
  • supercapacitors

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