Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27384
Title: From industrially weavable and knittable highly conductive yarns to large wearable energy storage textiles
Authors: Huang, Y
Hu, H 
Huang, Y
Zhu, M
Meng, W
Liu, C
Pei, Z
Hao, C
Wang, Z
Zhi, C
Keywords: Energy storage textiles
Knittability
Wearability
Weavability
Yarn supercapacitors
Issue Date: 2015
Publisher: American Chemical Society
Source: ACS nano, 2015, v. 9, no. 5, p. 4766-4775 How to cite?
Journal: ACS nano 
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.
URI: http://hdl.handle.net/10397/27384
ISSN: 1936-0851
EISSN: 1936-086X
DOI: 10.1021/acsnano.5b00860
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