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US 12,604,664 B2Granted
Flexible lead-free piezoelectric composite film and preparation method thereof, and electronic device
AssigneeTwenty Four Hours International Pte. Ltd.
InventorsJunhua Chen, Xiaosong Zhang
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Abstract
A method for preparing a flexible lead-free piezoelectric composite film, in which a rare-earth-doped SrSbxSc2-xTaCl2O8 precursor powder is prepared and coated with a BaTiO3 shell to form core-shell nanoparticles, and the core-shell nanoparticles are dispersed in a polyvinylidene fluoride (PVDF) matrix to obtain the flexible lead-free piezoelectric composite film. An electronic device including such piezoelectric composite film is also provided.
Claims18
A method of preparing a flexible lead-free piezoelectric composite film, comprising:
- (A) preparing a SrSbxSc2-xTaCl2O8 precursor powder doped with a rare-earth element, wherein 0.8<x<1.2;
- (B) coating the SrSbxSc2-xTaCl2O8 precursor powder with a shell to form a core-shell nanoparticle, wherein the shell is made from BaTiO3;
- and
- (C) dispersing the core-shell nanoparticle in a polyvinylidene fluoride (PVDF) matrix to obtain the flexible lead-free piezoelectric composite film.
1 more element
Dependencies are inferred from the claim text.