Ag/Au/Polypyrrole Core-shell Nanowire Network for Transparent, Stretchable and Flexible Supercapacitor in Wearable Energy Devices

Transparent and stretchable energy storage devices have attracted significant interest due to their potential to be applied to biocompatible and wearable electronics. Supercapacitors that use the reversible faradaic redox reaction of conducting polymer have a higher specific capacitance as compared...

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Bibliographic Details
Published in:Scientific reports 2017-02, Vol.7 (1), p.41981-41981, Article 41981
Main Authors: Moon, Hyunjin, Lee, Habeom, Kwon, Jinhyeong, Suh, Young Duk, Kim, Dong Kwan, Ha, Inho, Yeo, Junyeob, Hong, Sukjoon, Ko, Seung Hwan
Format: Article
Language:English
Subjects:
639/166
639/301
639/4077
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Capacitance
Electrodes
Energy storage
Humanities and Social Sciences
Light penetration
multidisciplinary
Nanotechnology
Polymerization
Polymers
Redox potential
Redox reactions
Science
Science (multidisciplinary)
Silver
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Summary:Transparent and stretchable energy storage devices have attracted significant interest due to their potential to be applied to biocompatible and wearable electronics. Supercapacitors that use the reversible faradaic redox reaction of conducting polymer have a higher specific capacitance as compared with electrical double-layer capacitors. Typically, the conducting polymer electrode is fabricated through direct electropolymerization on the current collector. However, no research have been conducted on metal nanowires as current collectors for the direct electropolymerization, even though the metal nanowire network structure has proven to be superior as a transparent, flexible, and stretchable electrode platform because the conducting polymer’s redox potential for polymerization is higher than that of widely studied metal nanowires such as silver and copper. In this study, we demonstrated a highly transparent and stretchable supercapacitor by developing Ag/Au/Polypyrrole core-shell nanowire networks as electrode by coating the surface of Ag NWs with a thin layer of gold, which provide higher redox potential than the electropolymerizable monomer. The Ag/Au/Polypyrrole core-shell nanowire networks demonstrated superior mechanical stability under various mechanical bending and stretching. In addition, proposed supercapacitors showed fine optical transmittance together with fivefold improved areal capacitance compared to pristine Ag/Au core-shell nanowire mesh-based supercapacitors.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep41981