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- Title
High energy storage density and large strain with ultra-low hysteresis in Mn-doped 0.65Bi0.5Na0.5TiO3-0.35SrTiO3 ceramics.
- Authors
Cao, Wenping; Li, Weili; Lin, Qianru; Xu, Dan
- Abstract
In this study, the energy storage performance and strain behavior of MnO-doped 0.65Bi0.5Na0.5TiO3-0.35SrTiO3 (NBT-ST-xMn) lead-free ceramics were investigated. MnO was induced as a 'hard' dopant to promote the formation of defect dipoles and improve relative density, enhancing the difference between the maximum and remnant polarization (Pmax-Pr) as well as the breakdown electric field (BDS) values. A high recoverable energy density of 1.14 J cm3 with a high energy efficiency of 83 % were achieved simultaneously under low electric field of 89 kV cm-1 at x = 0.5 mol%. Meanwhile, a relatively high strain of 0.22 % with ultra-low hysteresis of 14 % was attained under a moderate electric field of 60 kV/cm at x = 1.0 mol%. The results illustrate that the proper selection of base composition and effective chemical modifier make the NBT-ST an outstanding candidate for actuators and energy storage devices.
- Subjects
ENERGY storage; ENERGY density; ELECTRIC breakdown; HYSTERESIS; LEAD-free ceramics; HEAT storage; CERAMICS
- Publication
Journal of Materials Science: Materials in Electronics, 2021, Vol 32, Issue 13, p17645
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-06299-2