Piezoelectric materials for bistable energy harvester: A comparative study. Issue 176 (21st November 2016)

• Record Type: Journal Article
• Authors: Shah, Vishrut; Kumar, Rajeev; Talha, Mohammad; Vaish, Rahul
• Is Part Of: Integrated ferroelectrics. Issue 176(2016)
• Page Start: 73
• Page End: 84
• Publication Date: 2016-11-21
• Subjects: Energy harvesting -- lead-free -- piezoelectric -- bistable; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2016.1248750
• Languages: English
• ISSNs: 1058-4587

Abstract

ABSTRACT: This paper deals with the potential of various lead-free piezoelectric materials for energy harvesting. The performance of these materials is simulated for unimorph bistable piezoelectric energy harvester. The finite element method considering first-order shear deformation theory is used to model the system. The energy harvesting potential of bistable system (Non-linear) is compared with its linear counterpart. The results depict that the mean power density is almost 100% higher in case of bistable system. K0.5 Na0.5 NbO3 -LiSbO3 (KNN-LS) family exhibited better performance than the conventional lead-based piezoelectric material lead zirconate titanate (PZT). The mean power density of K0.5 Na0.5 NbO3 -LiSbO3 -CaTiO3 (2 wt.%) is reported to be 65% higher than PZT.