In this work,environmental mechanical energy,including human motion,was harvested and transferred to electronic energy by nanogenerators with electrospun polymeric mats.Considering the high electrostatic field during the process,electrospinning was ideally suited for producing piezoelectric polyvinylidene fluoride(PVDF)nanofibers with β-form crystal phase.The inorganic salts and multiwalled carbon nanotubes(MWCNTS)were doped into the polymer nanofibers mats to further enhance the output of nanogenerators,respectively.High-alignment was proved to improve the output voltage and power of bend-mode piezoelectric nanogenerator(PENG).