Enhancing energy harvesting potential of (K,Na,Li)NbO3-epoxy composites via Li substitution
article
In this study the influence of Li substitution on the piezoelectric performance of lead free K0.5Na0.5NbO3 (KNN)-epoxy composites is explored. Cuboid KNN piezoceramic particles modified with 0 to 12 mol.% of Li are prepared via a double calcination technique. The KNN-based particles are dispersed at 10 vol.% in an epoxy matrix to develop both random and dielectrophoretically structured composites. While the dielectric constant of these composites appears almost independent of Li content, the piezoelectric charge constant of structured composites peaks before the polymorphic phase transition, at 3 mol.% of Li. The enhanced energy harvesting capabilities of these composites make them an interesting choice for flexible energy generators.
TNO Identifier
862354
Source
Journal of the American Ceramic Society
Publisher
Wiley
Collation
26 p.