DocumentCode :
3463330
Title :
Flexible composite thermal energy harvester using piezoelectric PVDF polymer and shape memory alloy
Author :
Gusarov, B. ; Gimeno, L. ; Gusarova, E. ; Viala, B. ; Boisseau, S. ; Cugat, O.
Author_Institution :
Univ. Grenoble Alpes, Grenoble, France
fYear :
2015
fDate :
21-25 June 2015
Firstpage :
722
Lastpage :
725
Abstract :
A novel flexible composite thermal energy harvester is presented, which couples pyroelectric and piezoelectric effects of polyvinylidene fluoride (PVDF) with shape memory effect of a TiNiCu alloy. The harvester combines superior flexibility of PVDF with large temperature-induced strain of the shape memory alloy (SMA) to harvest small and quasi-static temperature variations. The composite with a volume of 27.5 mm3 (post-stamp size) can harvest an energy density of 0.41 mJ/cm3 per event, i.e. a temperature variation of 20°C. The harvester can directly power a light-emitting diode (LED) without any storage unit. The use of PVDF quadruples the energy, compared to previously reported harvesters based on PZT-fiber composites.
Keywords :
energy harvesting; fibre reinforced composites; nickel alloys; piezoelectric materials; shape memory effects; titanium alloys; LED; PVDF; PZT-fiber composites; SMA; energy density; flexible composite thermal energy harvester; light-emitting diode; piezoelectric PVDF polymer; polyvinylidene fluoride; quasi-static temperature variations; shape memory alloy; shape memory effect; temperature-induced strain; Energy harvesting; Shape; Shape memory alloys; Strain; Temperature measurement; Thermal energy; PVDF; Thermal energy harvesting; TiNiCu; polyvinylidene fluoride; shape memory alloy;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2015 Transducers - 2015 18th International Conference on
Conference_Location :
Anchorage, AK
Type :
conf
DOI :
10.1109/TRANSDUCERS.2015.7181025
Filename :
7181025
Link To Document :
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