Coaxial wet-spun yarn supercapacitors for high-energy density and safe wearable electronics

Liang Kou, Tieqi Huang, Bingna Zheng, Yi Han, Xiaoli Zhao, Karthikeyan Gopalsamy, Haiyan Sun and Chao Gao ()
Additional contact information
Liang Kou: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Tieqi Huang: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Bingna Zheng: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Yi Han: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Xiaoli Zhao: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Karthikeyan Gopalsamy: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Haiyan Sun: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
Chao Gao: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University

Nature Communications, 2014, vol. 5, issue 1, 1-10

Abstract: Abstract Yarn supercapacitors have great potential in future portable and wearable electronics because of their tiny volume, flexibility and weavability. However, low-energy density limits their development in the area of wearable high-energy density devices. How to enhance their energy densities while retaining their high-power densities is a critical challenge for yarn supercapacitor development. Here we propose a coaxial wet-spinning assembly approach to continuously spin polyelectrolyte-wrapped graphene/carbon nanotube core-sheath fibres, which are used directly as safe electrodes to assembly two-ply yarn supercapacitors. The yarn supercapacitors using liquid and solid electrolytes show ultra-high capacitances of 269 and 177 mF cm−2 and energy densities of 5.91 and 3.84 μWh cm−2, respectively. A cloth supercapacitor superior to commercial capacitor is further interwoven from two individual 40-cm-long coaxial fibres. The combination of scalable coaxial wet-spinning technology and excellent performance of yarn supercapacitors paves the way to wearable and safe electronics.

Date: 2014
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms4754 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4754

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms4754

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().