Piezoelectric-triboelectric composite sensor based on flexible porous PVDF-BTO film and preparation method of piezoelectric-triboelectric composite sensor

• Main Authors: PAN LIJIA, ZHANG JIAHAN, LI JIEAN, SHI YI, GAO XINGXUN, TAO RUOWEN, ZHOU ZHOU
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2022
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention discloses a piezoelectric-triboelectricity composite sensor based on a flexible porous PVDF-BTO film and a preparation method of the piezoelectric-triboelectricity composite sensor. The composite sensor adopts a PVDF-BTO nanofiber film and an elastic natural rubber film as a negative friction layer and a positive friction layer respectively; the bottom surface of the PVDF-BTO thin film and the upper surface of the natural rubber film are respectively pasted with a conductive adhesive tape as an electrode; preparing a porous composite film composed of a ferroelectric material BTO and a piezoelectric material PVDF by using an electrostatic spinning method; and the optimal doping content of the BTO is explored. According to the invention, a material device structure is designed for coupling all factors such as electrostatic induction, a piezoelectric effect and a porous dipole so as to improve the output of the nano-generator, and a new strategy is provided for the development of the nano-generator