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- Title
Dielectric temperature stability and energy storage performance of NBT-based lead-free ceramics for Y9P capacitors.
- Authors
Li, Hongtian; Zhou, Shiyu; Zhao, Jianwei; Yan, Tingnan; Du, Yuxiao; Zhou, Huanfu; Pu, Yongping; Wang, Dawei
- Abstract
In this work, novel (1 − x)(0.75Na 0. 5 Bi 0. 5 TiO3)-0.25Sr(Zr 0. 2 Sn 0. 2 Hf 0. 2 Ti 0. 2 Nb 0. 2 )O3- x NaNbO3 (NBT-SZSHTN- x NN, x = 0.1, 0.15, 0.2, 0.25) ceramics were fabricated. The influence of co-doping of NN and high entropy perovskite oxide (SZSHTN) on the phase structure, microstructure and dielectric properties of NBT-based lead-free ceramics was investigated. Dense microstructure with a grain size of ∼ 5 μ m is observed. When x = 0.25, a wide dielectric temperature stable range of −35.4–224.3 ∘ C with a low temperature coefficient of capacitance of < 10% is achieved, fulfilling the industry standard of Y9P specification. Furthermore, excellent energy storage performance with recoverable energy density of 2.4 J/cm3, discharge efficiency of 71%, power density of 25.495 MW/cm3 and discharge rate < 200 ns are simultaneously obtained, which shows great potential for high temperature capacitor applications.
- Subjects
CERAMIC capacitors; LEAD-free ceramics; DIELECTRICS; CERAMICS; ENERGY density; DIELECTRIC properties; POWER density; ENERGY storage; DIELECTRIC materials
- Publication
Journal of Advanced Dielectrics, 2023, Vol 13, Issue 1, p1
- ISSN
2010-135X
- Publication type
Article
- DOI
10.1142/S2010135X22420073