▎ 摘　　要

In this paper, we report a robust and a low-cost spin coating approach for fabrication of large area flexible piezoelectric nanocomposite generator device for harvesting biomechanical motions. In order to develop the piezoelectric nanocomposite, ZnO and BaTiO3 were used as filler materials for realization of piezoelectric nanogenerator. Serial stretching and bending tests over these devices illustrated generation of maximum open-circuit voltage of similar to 237 and similar to 736 mV for ZnO and BaTiO3, respectively. Furthermore, we also demonstrated a 2 x enhancement in output voltage performance of nanogenerator by adding graphene platelets to these diphasic piezoelectric nanocomposite systems.