Highly Stretchable Hybrid Nanomembrane Supercapacitors

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Highly Stretchable Hybrid Nanomembrane Supercapacitors

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Title: Highly Stretchable Hybrid Nanomembrane Supercapacitors
Author(s):
Kim, Keon Jung;
Lee, Jae Ah (UT Dallas);
Lima, Márcio D. (UT Dallas);
Baughman, Ray H. (UT Dallas);
Kim, Seon Jeong
Item Type: article
Keywords: Carbon nanotubes
Supercapacitors
Poly 3,4-ethylenedioxythiophene (PEDOT)
Membrane filters
Description: Includes supplementary material
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.
ISSN: 2046-2069
Link to Related Resource: http://dx.doi.org/10.1039/c6ra02757a
Persistent Link: http://hdl.handle.net/10735.1/5816
Bibliographic Citation: Kim, Keon Jung, Jae Ah Lee, Márcio D. Lima, Ray H. Baughman, et al. 2016. "Highly stretchable hybrid nanomembrane supercapacitors." RSC Advances 6(29), doi: 10.1039/C6RA02757A
Terms of Use: ©2016 The Royal Society of Chemistry. This article may not be further made available or distributed.
Sponsors: This work was supported by the Creative Research Initiative Center for Self-powered Actuation and the Korea-US Air Force Cooperation Program Grant No. 2013K1A3A1A32035592 in Korea. In the USA, Air Force Office of Scientific Research grants FA9550-15-1- 0089 and AOARD-FA2386-13-4119, NASA grants NNX14CS09P and NNX15CS05C, and the Robert A. Welch Foundation grant AT-0029.

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