Textile based ferroelectret for wearable energy harvesting

Abstract

Abstract Ferroelectrets are typically thin polymer foams that convert mechanical energy into electrical energy. This paper reports the fabrication and testing of a textile based ferroelectret made from two fluorinated ethylene propylene (FEP) films and a conventional textile (cotton, poly-cotton and silk) formed into a sandwich structure. These layers are laminated together and achieve a maximum measured stabilized piezoelectric coefficient d 33 of 987 pC/N for the FEP-silk ferroelectret, which is 85% of its initial piezoelectric coefficients d 33 after polarization.