Dielectric temperature stability and energy storage performance of NBT-based lead-free ceramics for Y9P capacitors
| Autor: | Hongtian Li, Shiyu Zhou, Jianwei Zhao, Tingnan Yan, Yuxiao Du, Huanfu Zhou, Yongping Pu, Dawei Wang |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Advanced Dielectrics. 13 |
| ISSN: | 2010-1368 2010-135X |
| DOI: | 10.1142/s2010135x22420073 |
| Popis: | In this work, novel (1 [Formula: see text])(0.75Na[Formula: see text]Bi[Formula: see text]TiO3)-0.25Sr(Zr[Formula: see text]Sn[Formula: see text]Hf[Formula: see text]Ti[Formula: see text]Nb[Formula: see text])O3-[Formula: see text]NaNbO3 (NBT-SZSHTN-[Formula: see text]NN, [Formula: see text] = 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 [Formula: see text]5 [Formula: see text]m is observed. When [Formula: see text] = 0.25, a wide dielectric temperature stable range of −35.4–224.3[Formula: see text]C with a low temperature coefficient of capacitance of [Formula: see text] 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 [Formula: see text] 200 ns are simultaneously obtained, which shows great potential for high temperature capacitor applications. |
| Databáze: | OpenAIRE |
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