High thermal stability in PLZST anti-ferroelectric energy storage ceramics with the coexistence of tetragonal and orthorhombic phase |
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| Authors: | Pin Liu Ming-Yu Li Qingfeng Zhang Wenru Li Yujing Zhang Meng Shen Shiyong Qiu Guangzu Zhang Shenglin Jiang |
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| Affiliation: | 1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China;2. Key Lab of Functional Materials for Electronic Information (B), Ministry of Education, Wuhan 430074, China;3. Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics & Electronic Science, Hubei University, Wuhan 430062, China |
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| Abstract: | The orthorhombic phase Pb0.97La0.02(Zr0.93Sn0.05Ti0.02)O3 (PLZST) and the tetragonal phase (Pb0.93Ba0.04La0.02)(Zr0.65Sn0.3Ti0.05)O3 (PBLZST) were composited by the conventional solid state method to acquire high energy storage density and high thermal stability. X-ray diffraction spectra revealed the coexistence of orthorhombic and tetragonal structure, indicating that the ceramics were successfully composited. The component ratio of PLZST/PBLZST significantly influenced the thermal stability as well as the energy storage density due to the opposite energy storage performance-temperature trend of PLZST and PBLZST. The phase composition, microstructure and electric properties were discussed to explain the performance in the ceramic composites. High energy storage density of 3.20?±?0.02?J/cm3 at 20?°C with a variation <15% over a temperature range from 20?°C to 150?°C were found in the ceramic composite with a PLZST/PBLZST ratio of 55:45. This work provide an effective method to broaden applications of energy storage ceramics in high temperature. |
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| Keywords: | Thermal stability Energy storage Anti-ferroelectric ceramics Tetragonal and orthorhombic phase |
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