Premium
Piezoelectric Properties of Lead‐free Piezoelectric Ceramics and Their Energy Harvester Characteristics
Author(s) -
Seo InTae,
Choi ChangHoi,
Song Daniel,
Jang MinSoo,
Kim BoYun,
Nahm Sahn,
Kim YoungSik,
Sung TaeHyun,
Song HyunCheol
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12227
Subject(s) - ceramic , piezoelectricity , figure of merit , materials science , composite material , dimensionless quantity , dielectric , energy harvesting , power density , power (physics) , optoelectronics , thermodynamics , physics
The energy convergence efficiency (η) and dimensionless figure of merit ( DFOM ) of CuO ‐added ( Na 0.5 K 0.5 ) NbO 3 ( CNKN ) ceramics are larger than those of NKN ceramics because of their large Q m values and small dielectric losses. Moreover, the η and DFOM values of CNKN ceramics are comparable to those of P‐5C ceramics, which exhibit the highest η and DFOM . Furthermore, the CNKN harvester exhibits a high power density of 12 mW/cm 3 at 93 Hz with a load resistance of 250 kΩ; this is similar to the PZT ‐based energy harvester, indicating that the CNKN ceramic is a good candidate material for energy harvesters.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom