Graphene doping to enhance the mechanical energy conversion performances of GR/KNN/P(VDF-TrFE) flexible piezoelectric sensors
Xiaofang Zhang, Weimin Xia, Congjun Cao, Peipei Che, Hong Pan, Yuanqing Chen
Abstract
. Under three different test scenarios of a ball drop experiment, a surface of the mouse wheel, and an action of 2.5 MPa external stress, this GR/KNN/P(VDF-TrFE)-based FPS shows high piezoelectric output voltages of 7.4 V, ∼2.0 V, and 15.4 V, respectively. Moreover, the FPS retains its performance even after an extended period of cantilever vibration cycles (2200). Thus, the conductive filler GR is responsible for promoting the energy conversion performance of the piezoelectric polymer, which also provides an application candidate of this GR/KNN/P(VDF-TrFE) film in FPSs.
Topics & Concepts
Materials sciencePiezoelectricityComposite materialGrapheneComposite numberCeramicDielectricCrystallinityPiezoelectric sensorNanotechnologyOptoelectronicsAdvanced Sensor and Energy Harvesting MaterialsDielectric materials and actuatorsInnovative Energy Harvesting Technologies