From industrially weavable and knittable highly conductive yarns to large wearable energy storage textiles

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

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Author(s)

  • Yan Huang
  • Hong Hu
  • Wenjun Meng
  • Chang Liu
  • Chonglei Hao
  • Zuankai Wang

Detail(s)

Original languageEnglish
Pages (from-to)4766-4775
Journal / PublicationACS Nano
Volume9
Issue number5
Online published16 Apr 2015
Publication statusPublished - 26 May 2015

Abstract

Wearable electronic textiles that store capacitive energy are a next frontier in personalized electronics. However, the lack of industrially weavable and knittable conductive yarns in conjunction with high capacitance, limits the wide-scale application of such textiles. Here pristine soft conductive yarns are continuously produced by a scalable method with the use of twist-bundle-drawing technique, and are mechanically robust enough to be knitted to a cloth by a commercial cloth knitting machine. Subsequently, the reduced-graphene-oxide-modified conductive yarns covered with a hierarchical structure of MnO2 nanosheets and a polypyrrole thin film were used to fabricate weavable, knittable and wearable yarn supercapacitors. The resultant modified yarns exhibit specific capacitances as high as 36.6 mF cm-1 and 486 mF cm-2 in aqueous electrolyte (three-electrode cell) or 31 mF cm-1 and 411 mF cm-2 in all solid-state two-electrode cell. The symmetric solid-state supercapacitor has high energy densities of 0.0092 mWh cm-2 and 1.1 mWh cm-3 (both normalized to the whole device) with a long cycle life. Large energy storage textiles are fabricated by weaving our flexible all-solid-state supercapacitor yarns to a 15 cm × 10 cm cloth on a loom and knitting in a woollen wrist band to form a pattern, enabling dual functionalities of energy storage capability and wearability.

Research Area(s)

  • energy storage textiles, knittability, wearability, weavability, yarn supercapacitors

Citation Format(s)

From industrially weavable and knittable highly conductive yarns to large wearable energy storage textiles. / Huang, Yan; Hu, Hong; Zhu, Minshen et al.

In: ACS Nano, Vol. 9, No. 5, 26.05.2015, p. 4766-4775.

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