Development of environmental-friendly BZT–BCT/P(VDF–TrFE) composite film for piezoelectric generator

Abstract

Recently, environmentally friendly and flexible piezoelectric generators have attracted considerable interest in powering wearable and implantable devices. In our present work, an environmental-friendly, flexible and efficient piezoelectric generator is demonstrated, based on composite film of 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) nanoparticles embedded into polyvinylidene fluoride–trifluoroethylene P(VDF–TrFE) polymer. The effect of the different doping contents of BZT–BCT on the output performance and flexibility were investigated. As a result, the composite film with 30% contents BZT–BCT exhibited more excellent performance, which generated the maximum open-circuit voltage of 8.11 V and short-circuit current of 2.83 µA. Moreover, the output voltage of the device shows good linear relationship with the applied force. Owing to the sensitivity of microforce, this developed piezoelectric generator could open a new application field for using as force sensor.