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学者姓名：侯育冬
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摘要 ：
High temperature piezoelectric energy harvester (HT-PEH) is an important solution to replace chemical battery to achieve independent power supply of HT wireless sensors. However, simultaneously excellent performances, including high figure of merit (FOM), insulation resistivity (rho) and depolarization temperature (T-d) are indispensable but hard to achieve in lead-free piezoceramics, especially operating at 250 degrees C has not been reported before. Herein, well-balanced performances are achieved in BiFeO3-BaTiO3 ceramics via innovative defect engineering with respect to delicate manganese doping. Due to the synergistic effect of enhancing electrostrictive coefficient by polarization configuration optimization, regulating iron ion oxidation state by high valence manganese ion and stabilizing domain orientation by defect dipole, comprehensive excellent electrical performances (T-d = 340 degrees C, rho(250) (degrees C) > 10(7) Omega cm and FOM2(50 degrees C) = 4905 x 10(-15 )m(2) N-1) are realized at the solid solubility limit of manganese ions. The HT-PEHs assembled using the rationally designed piezoceramic can allow for fast charging of commercial electrolytic capacitor at 250 degrees C with high energy conversion efficiency (eta = 11.43%). These characteristics demonstrate that defect engineering tailored BF-BT can satisfy high-end HT-PEHs requirements, paving a new way in developing self-powered wireless sensors working in HT environments.
关键词 ：
Piezoelectric energy harvester Piezoelectric energy harvester Lead-free piezoceramic Lead-free piezoceramic Dopants modulation Dopants modulation High-temperature High-temperature Defect engineering Defect engineering
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| GB/T 7714 | Xi, Kaibiao , Guo, Jianzhe , Zheng, Mupeng et al. Defect Engineering with Rational Dopants Modulation for High-Temperature Energy Harvesting in Lead-Free Piezoceramics [J]. | NANO-MICRO LETTERS , 2025 , 17 (1) . |
| MLA | Xi, Kaibiao et al. "Defect Engineering with Rational Dopants Modulation for High-Temperature Energy Harvesting in Lead-Free Piezoceramics" . | NANO-MICRO LETTERS 17 . 1 (2025) . |
| APA | Xi, Kaibiao , Guo, Jianzhe , Zheng, Mupeng , Zhu, Mankang , Hou, Yudong . Defect Engineering with Rational Dopants Modulation for High-Temperature Energy Harvesting in Lead-Free Piezoceramics . | NANO-MICRO LETTERS , 2025 , 17 (1) . |
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摘要 ：
Large piezoelectric voltage coefficient (g33) and figure of merit (FOM33) are the key parameters of perovskite ceramics for piezoelectric sensors and energy harvesters. Here, the Bi(Zn2/3Nb1/3)O3 (BZN) member with a low tolerance factor is introduced into the BiScO3-PbTiO3 (BS-PT) perovskite high-temperature piezoelectric matrix to decouple the piezoelectric coefficient (d33) and dielectric constant (epsilon r) by modulating the morphotropic phase boundary and grain size. For the optimal 0.38BS-0.01BZN-0.61PT ceramic that benefits from the decoupling of d33 and epsilon r, its Curie temperature, g33 and FOM33 are as high as 436 degrees C, 38.6 mV & sdot;m & sdot;N1 and 16.5x1012 m2 & sdot;N1, respectively. Furthermore, the 0.38BS-0.01BZN-0.61PT ceramic also shows the technical advantages of large g33 and FOM33 even at harsh elevated temperatures (>= 200 degrees C). Due to its outstanding comprehensive performances above, the 0.38BS-0.01BZN-0.61PT ceramic surpasses many other BS-PT-based piezoceramics. These results demonstrate that the 0.38BS-0.01BZN-0.61PT material is a promising competitor for high-temperature electro-mechanical coupling applications.
关键词 ：
Grain size Grain size Electromechanical coupling performance Electromechanical coupling performance Piezoceramic Piezoceramic BiScO3-PbTiO3 BiScO3-PbTiO3 Phase structure Phase structure
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| GB/T 7714 | Yu, Xiaole , Jiang, Shihua , Xi, Kaibiao et al. Realizing excellent electromechanical coupling performance in BiScO3-Bi (Zn2/3Nb1/3)O3-PbTiO3 ternary high-temperature perovskite ceramics [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (8) : 5001-5007 . |
| MLA | Yu, Xiaole et al. "Realizing excellent electromechanical coupling performance in BiScO3-Bi (Zn2/3Nb1/3)O3-PbTiO3 ternary high-temperature perovskite ceramics" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 44 . 8 (2024) : 5001-5007 . |
| APA | Yu, Xiaole , Jiang, Shihua , Xi, Kaibiao , Xu, Wenlong , Zheng, Mupeng , Zhu, Mankang et al. Realizing excellent electromechanical coupling performance in BiScO3-Bi (Zn2/3Nb1/3)O3-PbTiO3 ternary high-temperature perovskite ceramics . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (8) , 5001-5007 . |
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摘要 ：
An electrostatic capacitor for energy storage is an important basic component of pulse power electronics. The electrical breakdown strength (E-b) of normal ferroelectrics is low, which limits their application in dielectric energy storage. Constructing a 0-3-type composite dielectric, that is, introducing an insulating metallic oxide into the ferroelectric matrix, can greatly enhance E-b. Unfortunately, an intergranular secondary phase typically forms that causes large attenuation of the dielectric constant, which leads to limited improvement of energy storage performance. In this work, a composite ceramic with an intragranular segregation structure was intentionally designed using the BaTiO3-BaZrO3-CaTiO3 (BCZT) system as an example. Compared with those of a BCZT solid solution without a secondary phase and a BCZT composite with a grain-boundary secondary phase, the rationally designed BCZT composite with an intragranular secondary phase delivered a large recoverable energy density of 5.86 J/cm(3) and high efficiency of 86.7% at a moderate electric field of 550 kV/cm. Such performance was achieved because the intragranular segregation structure displayed delayed saturation polarization with a high E-b. This microstructural engineering strategy is generally applicable to optimize composite dielectrics to meet the demands of high-performance energy storage capacitors.
关键词 ：
secondary phase secondary phase Composite dielectrics Composite dielectrics Electrostatic energy storage Electrostatic energy storage BCZT BCZT Ferroelectrics Ferroelectrics
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| GB/T 7714 | Li, Yihao , Hou, Yudong , Xi, Kaibiao et al. An Intragranular Segregation Structure Enables an Excellent Energy Storage Performance in Composite Dielectrics through Delayed Saturation Polarization [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (42) : 57386-57394 . |
| MLA | Li, Yihao et al. "An Intragranular Segregation Structure Enables an Excellent Energy Storage Performance in Composite Dielectrics through Delayed Saturation Polarization" . | ACS APPLIED MATERIALS & INTERFACES 16 . 42 (2024) : 57386-57394 . |
| APA | Li, Yihao , Hou, Yudong , Xi, Kaibiao , Zheng, Mupeng , Zhu, Mankang . An Intragranular Segregation Structure Enables an Excellent Energy Storage Performance in Composite Dielectrics through Delayed Saturation Polarization . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (42) , 57386-57394 . |
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摘要 ：
Piezoelectric energy harvesting technology is drawing substantial attention as an eco-friendly method to promote energy transformation, which is at the forefront of current scientific research. However, the difficulties involved in obtaining a stable output voltage (Vout) and a controllable output current density (Iout) represent bottlenecks in the development of piezoelectric energy harvesters (PEHs) for practical applications. Here, a novel strategy that couples elastic polarization configuration with activity rattling space in lead-free potassium sodium niobate-based piezoceramics is proposed to break through this barrier. The cantilever beam-type PEHs assembled using the rationally designed piezoceramic system show a stable Vout (approximate to 22 V) and a controllable Iout over the range from 6.09 to 20.16 mu A cm-2, which is sufficient to drive multiple types of wireless sensors that have the same rated voltage but different rated current requirements. These fantastic power generation performances are associated with a stable piezoelectric voltage coefficient (g33), an increasing piezoelectric charge coefficient (d33), and a weakened electrostrictive coefficient (Q33) that stem from polarization configuration optimization in combination with introduction of the activity rattling space design. This work provides a good approach to modulation of the overall performance of piezoelectric materials to meet the demands of advanced PEH applications. The polarization configuration optimization with the introduction of activity rattling space design brings a stable piezoelectric voltage coefficient (g33), and an increasing piezoelectric charge coefficient (d33), resulting in the fantastic power generation performances with a stable Vout and a controllable Iout in lead-free KNNS-xBNZ PEHs. image
关键词 ：
rattling space rattling space lead-free piezoceramic lead-free piezoceramic piezoelectric energy harvester piezoelectric energy harvester polarization configuration polarization configuration
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| GB/T 7714 | Xi, Kaibiao , Hou, Yudong , Zheng, Mupeng et al. Elastic Polarization Configuration Coupled with Activity Rattling Space Boosts Energy Harvesting Performance of Lead-Free Piezoceramic [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (29) . |
| MLA | Xi, Kaibiao et al. "Elastic Polarization Configuration Coupled with Activity Rattling Space Boosts Energy Harvesting Performance of Lead-Free Piezoceramic" . | ADVANCED FUNCTIONAL MATERIALS 34 . 29 (2024) . |
| APA | Xi, Kaibiao , Hou, Yudong , Zheng, Mupeng , Zhu, Mankang . Elastic Polarization Configuration Coupled with Activity Rattling Space Boosts Energy Harvesting Performance of Lead-Free Piezoceramic . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (29) . |
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摘要 ：
With the rapid development of space exploration and new energy vehicles, it is urgent to build ultrawide temperature multilayer ceramic capacitors (UWT MLCCs) to match electronic circuits that can withstand harsh environmental conditions. Relaxor ferroelectrics with diffuse phase transition feature are potential dielectrics for the construction of UWT MLCCs. However, how to ensure high dielectric constant together with low dielectric loss in the wide temperature region is still a big challenge. Here, the above dif ficulties are addressed by tailoring the combination types of polar nanoregions (PNRs) in the (1x ) (0.8Na 0.5 Bi 0.5 TiO 3 -0.2K 0.5 Bi 0.5 TiO 3 )- x NaTaO 3 (NBT-KBT- x NT) system. Compared with PNRs types of P 4 bm + R 3 c and P 4 bm + Pbnm , the combination type of P 4 bm + Pbnm + R 3 c PNRs in NBT-KBT-0.31NT is the most bene ficial to obtain comprehensive excellent dielectric performance because it can balance the relationship between high dielectric constant and temperature stability over a wide temperature region. Further, by optimizing the laminating pressure and co- firing temperature to realize a tight interfacial structure between the dielectric layer and the Pt inner electrode, a record-high dielectric constant ( epsilon r = (907% +/- 15%)) together with low dielectric loss (tan d <= 0.025) is achieved over an ultra-wide range from -61 degrees C to 306 degrees C for NBT-KBT-0.31NT MLCC, demonstrating that tailoring the combination types of PNRs is a powerful strategy in designing UWT MLCC dielectrics. (c) 2023 The Authors. Published by Elsevier B.V. on behalf of The Chinese Ceramic Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词 ：
Lead-free dielectrics Lead-free dielectrics Multilayer ceramic capacitor Multilayer ceramic capacitor Ultra-wide temperature Ultra-wide temperature Polar nanoregion Polar nanoregion
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| GB/T 7714 | Liu, Jiacheng , Xi, Kaibiao , Song, Beibei et al. Boosting ultra-wide temperature dielectric stability of multilayer ceramic capacitor through tailoring the combination types of polar nanoregions [J]. | JOURNAL OF MATERIOMICS , 2024 , 10 (4) : 751-761 . |
| MLA | Liu, Jiacheng et al. "Boosting ultra-wide temperature dielectric stability of multilayer ceramic capacitor through tailoring the combination types of polar nanoregions" . | JOURNAL OF MATERIOMICS 10 . 4 (2024) : 751-761 . |
| APA | Liu, Jiacheng , Xi, Kaibiao , Song, Beibei , Cheng, Huarong , Yu, Xiaole , Zheng, Mupeng et al. Boosting ultra-wide temperature dielectric stability of multilayer ceramic capacitor through tailoring the combination types of polar nanoregions . | JOURNAL OF MATERIOMICS , 2024 , 10 (4) , 751-761 . |
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摘要 ：
Aerospace and electric vehicles often require high -temperature piezoelectric energy harvesters (HT-PEHs) to power wireless sensors operating at temperatures above 200 degrees C. In this work, by rational modulation of the phase composition of BiFeO 3 -BaTiO 3 (BF -BT) based on appropriate bismuth content compensation, the temperature dependences of the piezoelectric and insulating properties of selected materials and their applicability to HTPEHs were studied. The results show that BF-0.30BT ceramics located at the morphotropic phase boundary (MPB) have both a high energy harvesting figure of merit and good insulating characteristics at 200 degrees C; this combination of characteristics has not been reported in other types of lead-free piezoceramics to date. When compared with equivalent devices with different compositions, the cantilever beam -type HT-PEH that was assembled with BF-0.30BT has an excellent high -temperature power generation capacity that can not only achieve high-speed charging of commercial capacitors and light 36 light -emitting diodes (LEDs) at 200 degrees C, but also demonstrates satisfactory high -temperature cycling reliability. All these characteristics combine to demonstrate that BF-0.30BT is a promising lead-free candidate material for HT-PEH applications.
关键词 ：
Piezoelectric energy harvester Piezoelectric energy harvester MPB MPB Piezoelectricity Piezoelectricity High -temperature High -temperature BF -BT piezoceramic BF -BT piezoceramic
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| GB/T 7714 | Guo, Jianzhe , Hou, Yudong , Xi, Kaibiao et al. High-temperature stable power generation capacity of BF-BT-based piezoceramics with rationally modulated MPB structure [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 990 . |
| MLA | Guo, Jianzhe et al. "High-temperature stable power generation capacity of BF-BT-based piezoceramics with rationally modulated MPB structure" . | JOURNAL OF ALLOYS AND COMPOUNDS 990 (2024) . |
| APA | Guo, Jianzhe , Hou, Yudong , Xi, Kaibiao , Yu, Xiaole , Zheng, Mupeng , Zhu, Mankang . High-temperature stable power generation capacity of BF-BT-based piezoceramics with rationally modulated MPB structure . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 990 . |
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摘要 ：
一种具有低阻高发电性能的无铅压电陶瓷材料及制备方法，属于无铅压电陶瓷材料技术领域。在Ba0.85Ca0.15Zr0.1Ti0.9O3陶瓷中用低电阻率的BaSnO3取代部分的BaZrO3，在压电常数基本不变的同时，使陶瓷材料的电阻率显著降低，从而获得了极高的电流密度和功率密度，在压电能量收集器应用领域具有重要前景。
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| GB/T 7714 | 郑木鹏 , 安帅 , 高鑫 et al. 一种具有低阻高发电性能的无铅压电陶瓷材料及制备方法 : CN202310799122.0[P]. | 2023-07-03 . |
| MLA | 郑木鹏 et al. "一种具有低阻高发电性能的无铅压电陶瓷材料及制备方法" : CN202310799122.0. | 2023-07-03 . |
| APA | 郑木鹏 , 安帅 , 高鑫 , 侯育冬 , 朱满康 . 一种具有低阻高发电性能的无铅压电陶瓷材料及制备方法 : CN202310799122.0. | 2023-07-03 . |
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摘要 ：
Lead-free piezoceramics with a temperature-insensitive figure of merit (FOM = d(2)/epsilon) are urgently required to build a new generation of piezoelectric energy harvesters (PEHs) that can be used for environmental protection and new energy applications. Although (K,Na)NbO3 (KNN)-based ceramics are among the most promising lead-free piezoelectric candidates, the piezoelectric charge constant (d(33)) and dielectric constant (epsilon(r)) of KNN with an individual orthorhombic (O) phase exhibit opposite change trends in a certain temperature range, resulting in FOM with poor temperature stability. To break this bottleneck, a diffuse multiphase coexistence (DMC) strategy is proposed to realize a temperature-insensitive FOM. By constructing a DMC-featured orthorhombic-tetragonal (O-T) phase boundary associated with a hierarchical domain configuration, the temperature-driven synergistic variation of d(33) and epsilon(r) was realized in the 0.965(K0.48Na0.52)NbO3-0.035(Bi0.5Li0.5)ZrO3 (KNN-BLZ) system. Benefiting from an excellent temperature-insensitive FOM, the power density of the cantilever beam-type PEH produced by KNN-BLZ obtained a record value of 865 mu W cm(-3) at 80 degrees C, which was superior to the reported value of approximately 380 mu W cm(-3) for KNN-based PEHs measured at room temperature. These results pave the way for applications of KNN-BLZ piezoceramics, and also greatly impact our understanding of the strong correlations between the thermal stability of DMC structure and temperature-dependent energy-harvesting properties.
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| GB/T 7714 | Xi, Kaibiao , Hou, Yudong , Yu, Xiaole et al. Diffuse multiphase coexistence renders temperature-insensitive lead-free energy-harvesting piezoceramics [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (7) : 3556-3564 . |
| MLA | Xi, Kaibiao et al. "Diffuse multiphase coexistence renders temperature-insensitive lead-free energy-harvesting piezoceramics" . | JOURNAL OF MATERIALS CHEMISTRY A 11 . 7 (2023) : 3556-3564 . |
| APA | Xi, Kaibiao , Hou, Yudong , Yu, Xiaole , Zheng, Mupeng , Zhu, Mankang . Diffuse multiphase coexistence renders temperature-insensitive lead-free energy-harvesting piezoceramics . | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (7) , 3556-3564 . |
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摘要 ：
一种高介电储能性能的K1/2Bi1/2TiO3基二元无铅陶瓷材料，属于功能陶瓷材料技术领域。通过传统固相法制备了(1‑x)K1/2Bi1/2TiO3‑xBi0.85Nd0.15FeO3的二元系无铅铁电陶瓷，其中0.06≤x≤0.15。引入的Bi0.85Nd0.15FeO3对KBT的相结构和微观局域结构进行调控，具有高储能密度、高效率和高温度稳定性，在大功率脉冲动力系统领域具有良好的应用前景。
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| GB/T 7714 | 朱满康 , 常子亮 , 李叶欣 et al. 一种高介电储能性能的K1/2Bi1/2TiO3基二元无铅陶瓷材料 : CN202310819193.2[P]. | 2023-07-05 . |
| MLA | 朱满康 et al. "一种高介电储能性能的K1/2Bi1/2TiO3基二元无铅陶瓷材料" : CN202310819193.2. | 2023-07-05 . |
| APA | 朱满康 , 常子亮 , 李叶欣 , 郑木鹏 , 侯育冬 . 一种高介电储能性能的K1/2Bi1/2TiO3基二元无铅陶瓷材料 : CN202310819193.2. | 2023-07-05 . |
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摘要 ：
一种兼具高储能性能和负电容温度系数的介电陶瓷材料及制备，属于多功能多层陶瓷电容器领域。化学式BaTiO3‑BaZrO3‑CaTiO3，优选20BaTiO3‑40BaZrO3‑40CaTiO3，称取适量的BaCO3、CaCO3、TiO2和ZrO2作为起始原料。高温煅烧后，研钵粉碎，再二次球磨将粉体研细，使用聚乙烯醇缩丁醛酒精溶液作粘结剂造粒，过120目筛后压制成型，保温3h排出胶体，随后在高温炉空气气氛中烧结，保温4h后，随炉自然冷却至室温。本发明有效提高了介质材料的击穿场强和电容温度线性度，同时获得高储能性能和负电容温度系数，为多功能多层陶瓷电容器介质材料设计提供了新思路。
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| GB/T 7714 | 侯育冬 , 刘嘉成 , 于肖乐 et al. 一种兼具高储能性能和负电容温度系数的介电陶瓷材料及制备 : CN202310250235.5[P]. | 2023-03-15 . |
| MLA | 侯育冬 et al. "一种兼具高储能性能和负电容温度系数的介电陶瓷材料及制备" : CN202310250235.5. | 2023-03-15 . |
| APA | 侯育冬 , 刘嘉成 , 于肖乐 , 朱满康 , 席凯彪 , 郑木鹏 . 一种兼具高储能性能和负电容温度系数的介电陶瓷材料及制备 : CN202310250235.5. | 2023-03-15 . |
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