CERAMICS INTERNATIONAL
·
2012
·Vol. 39
·期 4
·3915-3919
·
IF 1.751
Junxia Wang,Hengchang Nie,Chunfeng Lan,Genshui Wang,Xianlin Dong,Xuefeng Chen,Fei Cao,Hongliang He
Porous Pb (Zr 0.95 Ti 0.05 ) O 3 / x MgO (PZT/MgO, x =0, 0.1, 0.2, 0.5 and 1.0 wt%) ferroelectric ceramics were prepared with MgO nanoparticles as reinforcing phase. The effects of MgO nanoparticles on the phase, microstructure, electrical and mechanical properties of as-prepared ceramics were investigated. The results show that the grain size is reduced obviously when increasing the amount of MgO. Compared with pure porous PZT, T C of MgO-added PZT ceramics shifts to higher temperature. Moreover, dielectric, ferroelectric and piezoelectric properties show no much degradation. Further, PZT/MgO ceramics possess enhanced mechanical properties compared to pure porous PZT ceramics, the largest increment of the fracture toughness and hardness being 31.3% and 19.8%, respectively. The optimal electrical and mechanical properties are obtained with the addition of less than 0.5 wt% MgO nanoparticles.
研究领域:
材料科学
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无机非金属材料
·
功能陶瓷
·
电子材料
·
固态物理
·
纳米复合材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Guanliang Chen,Xiujuan Lin,Jianan Li,John G. Fisher,Yan Zhang,Shifeng Huang,Xin Cheng
Flexible dielectric composite films are highly desirable materials with potential application in capacitors due to their high energy density and discharged efficiency. However, agglomeration induced by the large surface energy of nanoparticles and their large dielectric losses are unfavorable to the improvement of energy density. Submicron lead zirconate titanate (PZT) particles have shown great potential as filler in achieving a high energy storage capacity because of their excellent dielectric properties and good dispersion. In this work, calcined PZT particles were used to prepare PZT/polyvinylidene fluoride (PVDF) composite films. The results showed that composite films of high quality could be obtained even with high contents of submicron PZT particles. The introduction of PZT particles significantly improved the dielectric performance of composite films compared with that of the pristine PVDF film. The discharged energy density of composite films with 10 vol% PZT particles achieved 6.41 J/cm 3 at 250 kV/mm. A high efficiency of 87.25% was obtained at 50 kV/mm. These findings confirm the feasibility of PZT particles as inorganic filler in composite films for energy storage applications.
研究领域:
材料科学
·
电气工程
·
能量存储
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7193-7207
·
IF 2.1
Yuan ChongXiao,Zhang Chao,Yang Cheng,Wu Fuling,Xiao Shibing,Sun Huajun
Flexible wearable sensing devices are in great demand for self-powered systems. In this study, we fabricated fiber films of poly(vinylidene fluoride) (PVDF) matrix embedded with modified lead zirconate titanate nanoparticles (PZT NPs) using the electrospinning process. Each fiber film was cut into small pieces of 2 × 2 cm 2 , and pairs of pieces were pressed with a hot-pressing method. Modified PZT NPs with a high piezoelectric coefficient were embedded in PVDF fibers as a piezoelectric-reinforcing phase, which promoted the formation of the polar β phase in PVDF. The embedded PZT NPs affected the distribution of the polarized electric field and formed a local electric field between two PZT NPs, which promoted the polarization of PVDF, thereby enhancing the piezoelectric properties of PVDF/PZT NPs fiber films. The piezoelectric coefficient ( d 33 ) of the PVDF/PZT NPs fiber films embedding 4 wt.% PZT NPs showed the most significant enhancement, from 12 pC/N for neat PVDF to 21 pC/N, which is an approximately 75% improvement. The results of this work demonstrate the great potential application of piezoelectric composite fiber films in flexible wearable sensing devices.
研究领域:
材料科学
·
纳米技术
·
传感器
·
可穿戴技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 22
·1-12
·
IF 2.8
Liu Gang,Pu Zining,Xu Limeng,Yao Cheng,Zhang Changhai,Zhang Tiandong,Chi Qingguo
Conventional polymer film capacitors suffer from significant performance degradation at high temperatures due to increased conductivity loss. This study aims to enhance the high-temperature energy storage performance of polyetherimide (PEI) films by constructing a PZT/SiO 2 heterojunction composite dielectric structure. PEI films were prepared by solution casting and then modified by magnetron sputtering to deposit PZT and SiO 2 layers. At 150 °C, the composite films exhibited a high breakdown strength of 636.7 MV/m, a discharged energy density of 4.28 J/cm 3 , and a charge–discharge efficiency exceeding 90%. The PZT/SiO 2 heterojunction effectively inhibited charge injection, reducing leakage current and improving cyclic stability with minimal degradation after 50000 charge–discharge cycles. This scalable method offers a promising approach for developing high-performance polymer-based energy storage materials suitable for high-temperature applications.
研究领域:
材料科学
·
电气工程
·
高分子科学
·
储能技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Bing Xie,Tongtong Wang,Jinxia Cai,Qiuyu Zheng,Zhiyong Liu,Kun Guo,Pu Mao,Haibo Zhang,Shenglin Jiang
Polymer-based nanocomposites embedded high dielectric-constant (high- ε r ) ceramic fillers in high breakdown-strength (high- E b ) polymer matrix are extensively studied as the flexible dielectrics for high discharged-energy–density (high- U e ) film capacitors. Ferroelectric ceramics composition lying on the morphotropic phase boundary (MPB) show ultrahigh dielectric and polarization response, which as ceramic fillers, have great promise to enhance the U e of polymer/ceramic composites. Herein, high- ε r Pb(Zr 0.52 Ti 0.48 )O 3 (PZT) nanocubes (NCs) with MPB composition are prepared successfully via an improved hydrothermal reaction. Based on this, core–shell structured PZT@SiO 2 nanofillers are designed to reduce the uneven electric field distribution and leakage current in P(VDF-CTFE)-based nanocomposites for high E b . We demonstrate that the PZT@SiO 2 nanofillers with MPB composition can effectively resolve the paradox between ε r and E b . The prepared P(VDF-CTFE)/PZT@SiO 2 nanocomposites can display a high U e of 16.8 J/cm 3 at E b of 491 MV/m, which is substantially improved by 107% over the pristine P(VDF-CTFE). Plus, high discharging efficiency of 70% is also achieved. The superiority of the PZT@SiO 2 NCs with MPB in improving the capacitive energy density of film capacitors will be expected to provide a design paradigm for advanced polymer composites with high energy storage performance.
研究领域:
材料科学
·
能量存储
·
介电与绝缘材料
·
纳米复合材料
·
铁电材料
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Weigang Ma,Chuanmin Wang,Xinran Wang,Xinyi Zhou,Ya Lu,Xin Guo,Nguyen-Minh-An Tran,Junsheng Yang,Huabin Yang,Danyang Wang,Hua Tan,Haibo Zhang
The vat photopolymerization (VPP) technology offers exceptional flexibility in design and manufaction of high-performance piezoceramic structures. However, due to the high refractive index and strong UV absorption characteristics of Pb-based ceramics, ceramic slurries are required to have a low solid content in for efficient deep-curing. This limitation often results in sintering distortion, cracking, low density, and deteriorated piezoelectric properties. To address these challenges, a heat treatment process was initially employed to spheroidize the PZT powder, which effectively decreased light scattering and absorption. Subsequently, high-refractive-index and highly reactive photosensitive resins were introduced to enhance the penetration of UV light and reduce the critical exposure energy of the slurry. Additionally, a hindered amine light stabilizer is added to capture the peroxy radicals to overcome the oxygen inhibition effect and further increase the curing depth. As a result, a PZT slurry with a high solid content of 45 vol.%, was successfully formulated, facilitating the manufacturing of PZT ceramics with complex structures. The sintered samples achieved a high relative density of 96.5% and a d 33 value of 573 pC/N. These optimized strategies provide a solid foundation for the development of high-performance PZT devices with intricate geometries.
研究领域:
材料科学
·
陶瓷
·
增材制造
·
光聚合
·
压电材料
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Qinghui Jiang,Hui Long,Xianwei Zeng,Bo Wang,Boyu Yang,Jitao Yi,Yubo Luo,Junyou Yang,Haitao Ye,Yong Liu
BiCuSeO, an oxide thermoelectric material with a superlattice structure, presents the advantages of affordability, low toxicity, and environmental friendliness . However, its intrinsic low electrical conductivity has impeded its possible applications. To address this challenge, we put tiny PbZr 0.52 Ti 0.48 O 3 (PZT) with varying weight percentages ( x = 0, 5, 7, 9, 11) into BiCuSeO (BCSO) to fabricate thermoelectric nanocomposites . Through the spark plasma sintering process, PZT particles underwent in-situ decomposition, generating nano-sized second phases such as PbO 2 , TiO 2 , and PbZrO 3 , which are homogenously distributed within BCSO matrix (validated by XRD and TEM). The introduced PbO 2 , TiO 2 , and PbZrO 3 second phases served a dual purpose: inhibiting the grain growth of BCSO and introducing additional nano-grain boundaries. This resulted in more effective phonon scattering sites, thereby reducing lattice thermal conductivity . Simultaneously, the Pb element derived from PZT decomposition was doped into the Bi site of the BCSO matrix, causing a reduction in the band gap of BCSO from 0.49 eV to 0.388 eV and a significant increase in carrier concentration. Consequently, this doping enhanced the electrical conductivity of BCSO-based composites, with the composite with 11 wt% PZT additive amount exhibiting a remarkable 318-fold increase, reaching 550 S/cm compared to pristine BCSO. Notably, the composite with 7 wt% PZT additive amount achieved an exceptionally low lattice thermal conductivity of 0.333 W m −1 K −1 at 823 K. Through the synergistic optimization of electrical and thermal transport properties, the BCSO-based composite with 7 wt% PZT additive amount obtained a ZT value of ∼0.9 at 873 K, representing a 2.45-fold increase compared to pristine BiCuSeO. This straightforward method presents a cost-effective and scalable approach to enhance the thermoelectric performance of various materials, opening new avenues for potential commercial applications.
研究领域:
材料科学
·
热电学
·
纳米技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 23
·13023-13030
·
IF 4.22
Bian Kan,Li Xiuxiu,Wang Yiping,Li Xiongjie,Sun Sheng,Feng Shuo,Yang Ying
Pb(Zr, Ti)O 3 (PZT)-based piezoelectric ceramics and Al 2 O 3 -based structural ceramics were cast and co-fired to prepare a layered piezoelectric ceramic/structural ceramic composite. Considering the significant differences in sintering characteristics of PZT- and Al 2 O 3- based ceramics, control of the sintering temperature and the dependence of the linear shrinkage on the solid content of the tape-casting films were systematically conducted at first. The sintering density and the interface bonding properties of the prepared composites were then investigated. The results of electrical and mechanical properties of the composite ceramics indicate: By using sintering aids, Al 2 O 3 ceramic could be fully densified and co-fired with PZT ceramic at 1150 °C. Shrinkage matching during sintering was achieved by adjusting the solid contents to 45 vol.% and 65 vol.% for PZT and alumina tape-casting films. In the layered composites, Al 2 O 3 structural ceramic presents an excellent mechanical property with HV hardness of 667, while the PZT functional ceramic presents d 33 , ε r and tanδ of 259 pC/N, 965 and 0.37%, respectively.
研究领域:
材料科学
·
陶瓷工程
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DOI
高影响因子
APPLIED PHYSICS LETTERS
·
2019
·Vol. 115
·期 5
·
IF 3.521
Wang Jinxin,Jiang Guicheng,Huang Weicheng,Liu Danqing,Yang Bin,Cao Wenwu
Materials with an electrocaloric effect (ECE) have been extensively studied for their cooling applications. Most ECE films are oriented and are difficult to integrate into industrial production processes. Here, an ECE ( ΔS = 4.48 J K −1 kg −1 and ΔT = 6.4 °C at ΔE = 390 kV cm −1 ) is obtained in an unoriented PbZr 0.95 Ti 0.05 O 3 (PZT) film fabricated on an FTO substrate using an improved sol-gel method. To improve the ECE, Si-doped PZT films with 1–4 mol. % of Si are deposited. X-ray diffraction and X-ray photoelectron spectroscopy results confirm that Si was doped into the PZT lattice. The orthorhombic and tetragonal antiferroelectric phases coexist in the PZT/0.01 Si film. A large ECE ( ΔS = 5.89 J K −1 kg −1 and ΔT = 8.5 °C at ΔE = 390 kV cm −1 ) is acquired in the PZT/0.01 Si film, which was measured by an indirect method. This work demonstrates that ECE of unoriented PZT antiferroelectric films on FTO substrates can be improved by a certain amount of Si doping.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xiujuan Lin,Yaoting Zhao,Chao Wang,Wenlong Li,Rui Guo,Xiaofang Zhang,Feng Yu,Gensheng Dong,Chungang Li,Shifeng Huang
1-3 piezoelectric composites, as materials with integrated structural/functional characteristics, are typically used to manufacture ultrasonic transducers. As a core sensitive element, the structural dimensions as well as the molding quality of the 1–3 piezoelectric array, will directly affect the transducer's operating performance. In this paper, an improved soft mold process is proposed to prepare lead zirconate titanate (PZT) microscale 1–3 piezoelectric arrays by a soft mold combined with UV curing process. Firstly, the rheological behavior of PZT ceramic suspension and the preparation process of polydimethylsiloxane (PDMS) soft mold were studied. The surface contact angle of the Si master mold modified by trimethylchlorosilane (TMCS) was significantly increased, facilitating the peeling of the PDMS soft mold from the Si master mold surface, thus improving the surface quality of the PDMS soft mold. Then, the sintering process, microstructure, and electrical properties of microscale 1–3 piezoelectric arrays were systematically investigated. The perpendicularity and integrity of the piezoelectric arrays were improved by an optimized sintering process, and the arrays had micropillar diameters as small as 8 μm and aspect ratios over 7.5. The electrical properties of the piezoelectric composites with thicknesses of 55 μm and 42 μm were analyzed to obtain their resonant frequencies f s of 33.8 MHz and 41.3 MHz, respectively. The developed novel soft mold process can realize the preparation of microscale 1–3 piezoelectric arrays with fine structure and large aspect ratios, which are expected to fabricate high-frequency ultrasonic transducers.
研究领域:
材料科学
·
超声技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 7
·6760-6767
·
IF 2.195
Bao Runxi,Li Mingyu,Shen Meng,Liu Huan,Zhang Guangzu,Zeng Yike,Jiang Shenglin
Ceramic-polymer pyroelectric composite materials with favorable flexibility hold great potential for wearable sensors and energy harvesters, and the further improvement in pyroelectric properties would push them closer to practical application. In this work, an uniaxial stretching method was proposed to optimize the performance of lead zirconate titanate nanowires (PZT NWs)/polyvinylidene fluoride (PVDF) 1–3 composites. With just one stretching treatment, the pyroelectric coefficient of the composite was enhanced by inducing more β phase in PVDF matrix, and the permittivity was decreased by reorientation of PZT NWs to the strain direction in the meantime. As a result of the incorporated effects, the figure of merit of the stretched composite with orientated PZT NWs increases to the value of 2.18 × 10 −10 C cm −2 K −1 , which is 619% higher than that of untreated samples at 35 °C. This work could provide an efficient approach to fabricate high-performance ceramic-polymer pyroelectric composite materials.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
RARE METALS
·
2026
·
IF 11
Rui Yan,Weisan Fang,He Qi,Hang Ma,Chenyu Zhao,Jie Wu,Weihang Liu,Huifen Yu,Yu Chen,Liang Chen,Jun Chen
en High-power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade-off among key parameters ( T C , d 33 , Q m ). To transcend these limitations, we proposed a hierarchical design strategy in 0.97Pb(Zr x Ti 1- x )O 3 -0.03Bi(Mn 1/2 Ti 1/2 )O 3 ceramics: Bi 3+ and Mn 2+/3+ as lattice constituents occupy A and B-sites to stabilize the morphotropic phase boundary at x = 0.51, reducing polarization rotation barriers ( d 33 = 405 pC N −1 ) and sintering temperature (1080°C). Additionally, the subsequent introduction of 0.2 wt% MnCO 3 as an extrinsic dopant facilitates dual-site occupation, resulting in gradient-distributed oxygen vacancies that form ordered defect dipoles. The local random field disrupts ferroelectric long-range ordering, fostering a complex domain architecture that features both sub-micron and nanodomains. This stabilizes a dynamic equilibrium between irreversible domain-wall pinning and reversible polarization switching. Thus, the optimized material exhibits outstanding comprehensive electrical properties: d 33 = 418 pC N −1 , Q m = 550, T C = 351°C, k P = 0.59, tan δ = 0.0027. This work presents a novel material design paradigm for high-temperature high-performance piezoelectric materials. 摘要 zh 具有宽工作温度范围的高功率压电陶瓷对于极端条件下的传感器和执行器应用至关重要。然而,其发展从根本上受到关键参数( T C 、 d 33 、 Q m )之间内在平衡的阻碍。为了突破这些限制,我们提出了一种多级化设计策略:在0.97Pb(Zr x Ti 1- x )O 3 - 0.03Bi(Mn 1/2 Ti 1/2 )O 3 陶瓷中,通过Bi 3+ 和Mn 2+/3+ 作为晶格组分占据A和B位点,以此来稳定 x = 0.51处的准同型相界,并降低极化翻转能垒( d 33 = 405 pC N −1 )和烧结温度(1080°C)。此外,随后引入0.2 wt% MnCO 3 作为外源掺杂剂,促进双位点占据,形成梯度分布的氧空位,从而产生有序的缺陷偶极子。局部随机场能够破坏铁电长程有序性,形成同时包含亚微米和纳米畴的复杂畴结构。这能够稳定不可逆畴壁钉扎与可逆极化切换之间的动态平衡。因此,优化后的材料展现出卓越的综合电学性能: d 33 = 418 pC N −1 , Q m = 550, T C = 351°C, k P = 0.59, tan δ = 0.0027。本研究提出了一种高温高性能压电材料的新型材料设计范式。
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高影响因子
危险品化学品经营许可证（带存储）