Piezoelectric Properties of Lead‐free Piezoelectric Ceramics and Their Energy Harvester Characteristics
作者： In-Tae Seo , Chang-Hoi Choi , Daniel Song , Min-Soo Jang , Bo-Yun Kim
DOI: 10.1111/JACE.12227
关键词: Piezoelectricity 、 Ceramic 、 Power density 、 Energy harvester 、 Materials science 、 Dimensionless figure of merit 、 Load resistance 、 Dielectric loss 、 Composite material
摘要: The energy convergence efficiency (η) and dimensionless figure of merit (DFOM) CuO-added (Na0.5K0.5)NbO3 (CNKN) ceramics are larger than those NKN because their large Qm values small dielectric losses. Moreover, the η DFOM CNKN comparable to P-5C ceramics, which exhibit highest DFOM. Furthermore, harvester exhibits a high power density 12 mW/cm3 at 93 Hz with load resistance 250 kΩ; this is similar PZT-based harvester, indicating that ceramic good candidate material for harvesters.
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