▎ 摘　　要

NOVELTY - Piezoelectric energy harvesting device is prepared by based on zinc oxide nanofiber/graphene composite aerogel, where the preparation method of the device comprises preparing the zinc oxide nanofiber precursor solution, and preparing the graphene aerogel, doping the ordered zinc oxide nanofibers into the graphene aerogel to prepare zinc oxide nanofiber/graphene composite aerogel, covering the upper surface of the prepared zinc oxide nanofiber/graphene composite aerogel with conductive silver paste, adhering copper foil, coating the other side of the copper foil with conductive silver paste to wrap one end of the copper wire, placing it in a 130 degrees C oven for 30 minutes, taking it out, and repeating the above operation on the other side of the aerogel to obtain a piezoelectric energy harvesting device. USE - Used as piezoelectric energy harvesting device. ADVANTAGE - The device: does not destroy the internal and external structure of the aerogel, so that it maintains the advantages of good appearance and high elasticity; can evenly distribute the zinc oxide nanofibers inside the aerogel, so that it can obtain the ability of piezoelectric energy harvesting. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for manufacturing a piezoelectric energy harvesting device comprising (1) dissolving the zinc oxide particles in a sodium hydroxide solution to obtain a clear solution, adding a nonionic surfactant, and ultrasonically dispersing to obtain a uniform zinc oxide nanofiber precursor solution, (2) using 325 mesh natural flake graphite as raw material, a graphene oxide solution is prepared by the modified Hummers method, ultrasonically dispersing uniformly graphene oxide solution, preparing reduced graphene oxide hydrogel by hydrothermal method, and drying to obtain the reduced graphene oxide aerogel, (3) immersing the graphene aerogel in the zinc oxide nanofiber precursor solution and taking it out to obtain the zinc oxide nanofiber/graphene composite aerogel precursor, (4) hydrothermally heating the zinc oxide nanofiber/graphene composite aerogel precursor, and drying to obtain a zinc oxide nanofiber/graphene composite aerogel and (5) coating the upper surface of the zinc oxide nanofiber/graphene composite aerogel with conductive silver paste, adhering copper foil, the other side of the copper foil is coated with conductive silver paste to wrap one end of the copper wire, placing it in a 130 degrees C oven for 30 minutes, taking it out, and repeating the above operation on the other side of the aerogel to obtain a simple device for piezoelectric energy harvesting