Journal
NANO RESEARCH
Volume 7, Issue 11, Pages 1680-1690Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0528-6
Keywords
single-walled carbon nanotubes; supercapacitor; stretchability; all-solid-state; nanocomposites; polyaniline
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Funding
- National Basic Research Program of China [2012CB932302]
- National Natural Science Foundation of China [51172271, 51372269, 90921012]
- Chinese Academy of Sciences [XDA09040202]
- Beijing Municipal Education Commission [YB20108000101]
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In order to develop an excellent pseudocapacitor with both high specific capacitance and outstanding stretchability to match with other devices applicable in future wearable and bio-implantable systems, we focus our studies on three vital aspects: Stretchability of hybrid film electrodes, the interface between different components, and the integrated performance in stretchability and electrochemistry of supercapacitors based on single-walled carbon nanotube/polyaniline (SWCNT/PANI) composite films on pre-elongated elastomers. Owing to the moderate porosity, the buckled hybrid film avoids the cracking which occurs in conventional stretchable hybrid electrodes, and both a high specific capacitance of 435 F center dot g(-1) and a high strain tolerance of 140% have been achieved. The good SWCNT/PANI interfacial coupling and the reinforced solid electrolyte penetration structure enable the integrated pseudocapacitors to have stretch-resistant interfaces between different units and maintain a high performance under a stretching of 120% elongation, even after 1,000 cyclic elongations.
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