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Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors

Title
Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors
Author
김선정
Keywords
WALLED CARBON NANOTUBES; REDUCED GRAPHENE OXIDE; SOLID-STATE; ENERGY-STORAGE; ASYMMETRIC SUPERCAPACITORS; MICRO-SUPERCAPACITORS; FIBER SUPERCAPACITORS; HIGH PERFORMANCES; HYBRID FIBERS; TEXTILES
Issue Date
2016-12
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v. 7, Page. 13811
Abstract
Yarn-based supercapacitors having improved performance are needed for existing and emerging wearable applications. Here, we report weavable carbon nanotube yarn supercapacitors having high performance because of high loadings of rapidly accessible charge storage particles (above 90 wt% MnO2). The yarn electrodes are made by a biscrolling process that traps host MnO2 nanoparticles within the galleries of helically scrolled carbon nanotube sheets, which provide strength and electrical conductivity. Despite the high loading of brittle metal oxide particles, the biscrolled solid-state yarn supercapacitors are flexible and can be made elastically stretchable (up to 30% strain) by over-twisting to produce yarn coiling. The maximum areal capacitance of the yarn electrodes were up to 100 times higher than for previously reported fibres or yarn supercapacitors. Similarly, the energy density of complete, solid-state supercapacitors made from biscrolled yarn electrodes with gel electrolyte coating were significantly higher than for previously reported fibre or yarn supercapacitors.
URI
https://www.nature.com/articles/ncomms13811http://repository.hanyang.ac.kr/handle/20.500.11754/101924
ISSN
2041-1723
DOI
10.1038/ncomms13811
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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