Berlin 2015 – scientific programme
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DS: Fachverband Dünne Schichten
DS 36: Poster Session I
DS 36.34: Poster
Thursday, March 19, 2015, 09:30–12:00, Poster A
A polymer nanogenerator based on silver nanoparticles doped electrospun P(VDF-HFP) nanofibers — Dipankar Mandal1, •Karsten Henkel2, and Dieter Schmeißer2 — 1Organic Nano-piezoelectric Device Laboratory, Department of Physics, Jadavpur University, Kolkata 700032, India — 2Angewandte Physik - Sensorik, Brandenburgische TU Cottbus-Senftenberg, K.-Wachsmann-Allee 17, 03046 Cottbus, Germany
The rising energy demand within the increasing mobility of human society has driven the development of new alternative power sources for portable devices with ultra-low electric power consumption.
Based on its piezoelectric properties poly-vinylidene fluoride (PVDF) is a good candidate for mechanical energy harvesting for such devices. Moreover the copolymer poly(vinylidene fluoride-hexafluoropropylene) [P(VDF-HFP)] offers better film flexibility and cost-effectiveness than pure PVDF.
We report on a polymer nanogenerator (PNG) based on electrospun P(VDF-HFP) nanofibers doped with silver nanoparticles (Ag-NPs). The electrospun fibers were characterized by FTIR, XPS, SEM and pressure imparting probe. It has been found that the yield of the piezoelectric phase is increased by the addition of Ag-NPs due to an interaction between surface charges of Ag-NPs and the molecular dipoles. Furthermore, defects in the P(VDF-HFP) electrospun fibers are removed. Accordingly, a significant enhancement in the output power of the PNG was found. Similar trends were also observed with Pd-NPs.