Journal
NANO ENERGY
Volume 12, Issue -, Pages 401-409Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.11.048
Keywords
Carbon nanotube; Helical yarn; Fiber-shaped supercapacitor; Stretchable device
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Funding
- Natural Science Foundation in China [NSFC 11272109]
- Ph.D. Programs Foundation of Ministry of Education of China [20122302110065, 20120001110076]
- NSFC [91127004, 51325202]
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Stretchable fiber-shaped supercapacitors have been fabricated by attaching active materials to elastic polymeric substrates. Here, we report a substrate-free, self-stretchable carbon nanotube (CNT) yarn supercapacitor utilizing the helical loop structure incorporated into the CNT yarns. Our helical CNT yarn supercapacitors can work stably under many extreme deformation conditions such as super-elongation (tensile strain up to 150%), arbitrary shape change (entangling), and high frequency stretching (up to 10 Hz over 10000 cycles). By designing and manufacturing particular yarn structures as described here, fiber-shaped supercapacitors with unprecedented properties and high performance could be developed, which have potential applications in portable, wearable, and body-integrated energy storage devices. (C) 2014 Elsevier Ltd. All rights reserved.
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