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Highly stretchable hybrid nanomembrane supercapacitors

Title
Highly stretchable hybrid nanomembrane supercapacitors
Author
김선정
Keywords
SOLID-STATE SUPERCAPACITORS; HIGH-ENERGY DENSITY; HIGH-PERFORMANCE; YARN SUPERCAPACITORS; FLEXIBLE ELECTRONICS; TRANSPARENT; FILMS; SENSORS
Issue Date
2016-03
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v. 6, NO 29, Page. 24756-24759
Abstract
Supercapacitors that are lightweight, mechanically deformable (stretchable, flexible) and electrochemically stable have potential for various applications like portable, wearable, and implantable electronics. Here we demonstrate a stretchable and high-performing hybrid nanomembrane supercapacitor. The hybrid nanomembrane is prepared by vapour phase polymerization (VPP) based nanoscopic PEDOT coating on carbon nanotube sheets (CNS) transferred onto an elastomeric substrate to form a wavy structure. The resulting wavy structured hybrid nanomembrane based supercapacitor exhibits high electrochemical performance and mechanical stretchability, simultaneously. The high specific capacitances and energy density (82 F g(-1), 11 mF cm(-2), and 7.28 W h kg(-1) at 0% strain) are retained under large mechanical deformation (77 F g(-1) and 6.87 W h kg(-1) at a biaxial strain of 600%). Moreover, there is only ˂1% degradation of capacitance ratio after 1000 cycles stretching/releasing and bending/unbending. This high mechanical cyclic stability is shown even during stretching/releasing and bending/unbending measured by dynamic cyclic voltammetry (CV). These results suggest that our supercapacitor is valuable in a wide range of applications that require it to be electrochemically stable under large mechanical deformation, such as strain sensors, wearable electronics and biomedical devices.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA02757A#!divAbstracthttp://hdl.handle.net/20.500.11754/36441
ISSN
2046-2069
DOI
10.1039/c6ra02757a
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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