Piezoelectric PVDF/CNT Flexible Applied on Motorcycle
Aphisak Kaeopisan (1), Hassakorn Wattanasarn (2)*
(1,2) Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon, 47000, Thailand.
Abstract
For harvesting energy, mechanical energy converts to electrical energy using piezoelectric devices. In this study, piezoelectric flexible (PF) was synthesized form composite materials of polyvinylidene difluoride adding 1wt.% of carbon nanotube (PVDF-1wt.%CNT). The PVDF-1wt.%CNT size 0.5×30×100 mm3 and annealed at 60 ℃ for 1h. A copper tape was compressed for electrode on the top and bottom of the PF, poling at 6 kV mm–1 for 20 min. The results show that the piezoelectric coefficient (d33) maximum was 22 pC N–1. The 5 PF modules was fabricated to a device and attachment on a motorcycle coil spring compressor to investigate the generating electricity of the PF from mechanical energy. The motorcycle was tested using velocity at 50 km h–1 for 5 min run-on various surface road. The electricity from the PF modules were arranged using rectifier circuit installed motorcycle coil spring compressor, the output voltage was 3, 3.3, and 4 V for asphalt, cement, and gravel road, respectively. It expected that the harvesting energy devices using piezoelectric flexible is useful to apply on a motorcycle for generated electricity.
Keywords: PVDF; CNT; Composites; Harvesting energy; Mechanical energy
Topic: Energy and environment materials