Coaxial silver nanowire/polypyrrole nanocomposite supercapacitors

By Yuksel, Recep; Alpugan, Ece; Unalan, Husnu Emrah
Published in Organic Electronics 2018


Three-dimensional (3D) core-shell silver nanowire (Ag NW) - polypyrrole (PPy) nanocomposites are used for the fabrication of supercapacitors. In-situ chemical polymerization of {PPy} onto Ag {NWs} results in the formation of diameter tunable, coaxial and 3D nanocomposites. Inner Ag {NW} core facilitates the charge transfer and {PPy} shell shows a remarkably high pseudocapacitance. Fabricated Ag NW/PPy nanocomposite has a specific capacitance of 509 F g?1 at a current density of 0.31 A g?1, while the energy and power densities are found to be 4.27 Wh kg?1, 60.7 W kg?1, respectively. For these devices a capacity retention of more than 90% is obtained following 10000 cycles. It is envisaged that the 3D core-shell nanocomposite architecture investigated here can be extended to other conducting polymer and metal nanowire systems.

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