Journal
SMART MATERIALS AND STRUCTURES
Volume 27, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aabdbc
Keywords
fluorinated ethylene propylene; flexible ferroelectret; human body energy harvesting
Funding
- UK engineering and Physical Sciences Research Council (EPSRC) [EP/P010164/1]
- EPSRC [EP/P010164/1] Funding Source: UKRI
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Ferroelectret is a thin and flexible cellular polymer foam that generates electrical power under mechanical force. This paper reports the fabrication and testing of an easy to assemble ferroelectret which is made from two fluorinated ethylene propylene (FEP) films and a standard polymer foam formed into a sandwich structure. The measured piezoelectric coefficient d(33) of the FEP-porous polymer ferroelectret is 1000 pC N-1 . The energy harvester based on the FEP-porous polymer ferroelectret generate an output power of 6.4 mu W. This is corresponding to volume unit power output of 62.4 mu W cm(-3) . The practical electromechanical coupling factor is achieved at 0.107. Within 40 s, a 10 mu F capacitor is charged up to 0.2 V by the FEP-porous polymer ferroelectret harvester through a rectifier.
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