JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 21
·17258-17271
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IF 2.779
Zhou Chuang,Cai Wei,Yang Xue,Zhang Qianwei,Chen Dakai,Wang Yaohan,Huang Rui,Du Mingchao,Gao Rongli,Chen Gang,Deng Xiaoling,Wang Zhenhua,Lei Xiang,Fu Chunlin
(K,Na)NbO 3 − x at.% Tm 2 O 3 (KNNT x ) piezoelectric ceramics with submicron grain size were successfully prepared by solid-state method combined with microwave sintering. With the increase of content of Tm 3+ , KNNT x ceramics gradually transformed from orthorhombic (O) phase to the coexistence of O and tetragonal (T) phase at room temperature, and the phase transition temperature of O–T phase shifted to low temperature region. The leakage behaviors, dielectric, ferroelectric, and piezoelectric properties of KNNT x ceramics depend on the structure evolution, cationic vacancy and grain refinement caused by Tm 3+ doping, and the relevant mechanisms have been illustrated. The substitution of Tm 3+ at A sites increases the critical driving force for the rapid growth of grains and obviously refine the grain of KNNT x ceramics, resulting in its deteriorated ferroelectricity and enhanced piezoelectricity. Especially the piezoelectric constant of KNNT x ceramics increased from 109.8 to 163.6 pC/N. These findings are of great significance for developing excellent lead-free piezoelectric materials.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Xu Lihui,Lin Jinfeng,Yang Yuxuan,Zhao Zhihao,Shi Xiaoming,Ge Guanglong,Qian Jin,Shi Cheng,Li Guohui,Wang Simin,Zhang Yang,Li Peng,Shen Bo,Fu Zhengqian,Wu Haijun,Huang Houbing,Li Fei,Ding Xiangdong,Sun Jun,Zhai Jiwei
The contradiction between high piezoelectricity and uniquely poor temperature stability generated by polymorphic phase boundary is a huge obstacle to high-performance (K, Na)NbO 3 -based ceramics entering the application market as Pb-based substitutes. We possess the phase boundary by mimicking Pb(Zr, Ti)O 3 ’s morphotropic phase boundary structure via the synergistic optimization of diffusion phase boundary and crystal orientation in 0.94(Na 0.56 K 0.44 )NbO 3 −0.03Bi 0.5 Na 0.5 ZrO 3 −0.03(Bi 0.5 K 0.5 )HfO 3 textured ceramics. As a result, a prominent comprehensive performance is obtained, including giant d 33 of 550 ± 30 pC/N and ultrahigh temperature stability ( d 33 change rate less than 1.2% within 25-150 °C), representing a significant breakthrough in lead-free piezoceramics, even surpassing the Pb-based piezoelectric ceramics. Within the same temperature range, the d 33 change rate of the commercial Pb(Zr, Ti)O 3 −5 ceramics is only about 10%, and more importantly, its d 33 (~ 350 pC/N) is much lower than that of the (K, Na)NbO 3 -based ceramics in this work. This study demonstrates a strategy for constructing the phase boundary with MPB feature, settling the problem of temperature instability in (K, Na)NbO 3 -based ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 6
·3481-3490
·
IF 3.9
Shuo Gao,Peng Li,Jiawei Qu,Wei Li,Jiwei Zhai,Feifei Wang,Jigong Hao,Peng Fu,Zhongbin Pan,Wangfeng Bai
It is difficult to maintain strong piezoelectric properties over a wide temperature range in (K,Na)NbO 3 (KNN)-based ceramics owing to the polymorphic phase boundary (PPB). Here, we propose advantageously utilizing the synergistic effect of crystal orientation and phase structure to address this issue. The 〈0 0 1〉 pc textured (1 − x )(K 0.48 Na 0.52 )(Nb 0.96 Sb 0.04 )O 3 – x (Bi 0.5 Ag 0.5 )ZrO 3 (KNNS– x BAZ) ceramics with different phase structures were synthesized via the templated grain growth method. A high piezoelectric coefficient ( d 33 ) of 505 ± 25 pC/N, an electric field-induced strain of 0.21%, and a superior temperature stability ( d 33 exhibited a high retention of ≥78% at the temperature up to 200°C; strain maintained within 5.7% change over a temperature range of 30–150°C) were simultaneously achieved in textured KNNS–0.03BAZ ceramics. The flattened Gibbs free energy induced by the R–O–T multiphase coexistence, the strong anisotropy of crystals, and the abundant nanodomains contributed to the enhanced piezoelectric properties. The contribution of the strong anisotropy of crystals in 〈0 0 1〉 pc textured ceramics compensates for the deterioration of the piezoelectric properties caused by the phase structure deviation from the PPB with increasing temperature, which benefits the superior temperature stability of the textured KNNS–0.03BAZ ceramics. The previous merits prove that utilizing the synergistic effect of crystal orientation and phase structure is an effective strategy to boost the piezoelectricity and their temperature stability of KNN-based ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 11
·3655-3662
·
IF 7.059
Guanhua Song,Zhibin Liu,Faqiang Zhang,Feng Liu,Yan Gu,Zhifu Liu,Yongxiang Li
A lead-free piezoelectric ceramic library of (1 − x − y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 [100(1 − x − y)BNT–100xBT–100yKNN] (0 ≤ x ≤ 0.12, 0 ≤ y ≤ 0.12) with 91 samples was prepared by using a high-throughput (HT) method. By comparing the performance mapping of Pr, Ec, TF–R, d33, d33* and the domain configuration to the compositions, the property diagram of the ternary library could be identified with three regions of (I) rhombohedral ferroelectric, (II) relaxor ferroelectric and (III) tetragonal ferroelectric phases. Remarkable phase-boundary effects were observed between two adjacent regions with phase coexistence features. Interestingly, the maximum d33 value was obtained near the I–III region boundary, while the maximum d33* value was obtained on the I–II region boundary. The electric field-induced rhombohedral–tetragonal phase transition at the I–III region boundary brings good piezoelectric properties. The reversible relaxor–ferroelectric phase transition near the I–II region boundary could be the origin of the enhanced depolarization effect of the samples with the recovery of the electric field, leading to high d33* values.
研究领域:
材料科学
·
固体力学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Peng Li,Shuo Gao,Guangrui Lu,Yang Zhao,Jigong Hao,Peng Fu,Juan Du,Wangfeng Bai,Wei Li,Jiwei Zhai
The temperature instability of piezoelectric properties in KNN-based ceramics has been a major bottleneck impeding them toward practical applications. Herein, we prepared multilayer composite ceramics using two kinds of textured thick films with different polymorphic phase transition temperatures. The composite ceramics simultaneously exhibited outstanding piezoelectric properties (d 33 = 400 ± 20 pC/N; S = 0.18 % at 40 kV/cm) and piezoelectric temperature stability (d 33 and S variation within 5 % and 2 %, respectively over the temperature range of room temperature to 180 °C). The synergistic contribution of slightly fluctuating ε r ·P r values, the robust phase and domain structures, and the complementary effect of piezoelectric fluctuation between the two composite layers led to the outstanding temperature stability of piezoelectric properties . Furthermore, the piezoelectric energy harvester produced using KNN-T 1 /T 2 composite ceramics exhibits a large power density of 5.4 mW/cm 3 . These results prove great potential of KNN-T 1 /T 2 ceramics in high temperature piezoelectric devices.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Jizhong Deng,Guoxiang Zhang,Ya Yang,Wenjun Zhu,Zhiyi Wu,Yuanyu Wang
The development of wearable technology has been driven by the increasing demand for flexible and sensitive sensors that can utilize body motion to generate electricity or acquire physiological data for health assessment and rehabilitation. In this work, piezoelectric materials K 0.5 Na 0.5 NbO 3 nanoparticles (KNN NPs), synthesized through a one-step hydrothermal method, were integrated into poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] films to enhance their electrical properties for application in wearable piezoelectric nanogenerator (PENG) sensors. The maximum content of β phase in the composite film is as high as 83.1%, which may be attributed to the enhancement of polar interface interactions. The PENG sensors exhibited an open-circuit voltage of 12 V, a short-circuit current of 0.86 μA, and a peak power of 3.18 μW under optimal load, showcasing superior performance and stability over 4700 cycles. Monitoring results from human body motion demonstrated the potential application prospects of PENG sensors in motion analysis and medical rehabilitation.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yan Mu,Junjun Wang,Bingsen Wang,Yufang Jiao,Jian He,Meng Liu,Che Sun,Shaoyang Yuan,Danqing Liu,Wenlong Yang,Fengmin Wu
Lead-free BNT-BT based ceramics exhibit significant potential for achieving high piezoelectric performance. However, it is an effective strategy to achieve a morphotropic phase boundary (MPB) region with good thermal stability remains challenging. Herein, the incorporation of K 0.5 Na 0.5 NbO 3 into the Bi 0.5 Na 0.5 TiO 3 -BaTiO 3 binary system was explored, leading to a significant enhancement in both piezoelectric performance and thermal stability. The ternary BNT-BT-KNN ceramic system was systematically investigated with respect to its phase diagram, crystal structure, electrical properties, and relaxation behavior. It was observed that both the grain size and domain size gradually decrease as the KNN content increases. Remarkable electromechanical coupling factor ( k p = 0.217), exceptionally high piezoelectric properties ( d 33 = 105 pC/N), and improved ( T d = 164 °C) were achieved at BNT-BT-0.01KNN ceramics. The phase diagram of BNT-BT-KNN has been established, offering a comprehensive roadmap for the development of high-performance piezoelectric ceramics with enhanced piezoelectric responses. This work may facilitate potential applications in piezoelectric actuators.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2024
·Vol. 136
·期 7
·
IF 2.7
Zha Jielin,Yang Yulong,Liu Jiaxun,Lu Xiaomei,Hu Xueli,Yan Shuo,Wu Zijing,Zhou Min,Huang Fengzhen,Ying Xuenong,Zhu Jinsong
Although K 0.5 Na 0.5 NbO 3 (KNN) possesses large maximum polarization and relatively high breakdown strength, the large remnant polarization constrains their practical applications as energy storage materials. In this work, through multi-element doping, (K 0.5−0.5 x Na 0.5−0.5 x Bi x )(Nb 1− x Sn 0.2 x Zn 0.6 x Ta 0.2 x )O 3 relaxor ferroelectrics were prepared. As the superparaelectric states (SPE) were adjusted to room temperature, orthorhombic, tetragonal, and cubic phases coexisted, accompanied by the highly dynamic polar nanoregions (PNRs). In particular, a high recoverable energy storage density of 4.5 J/cm 3 and an energy storage efficiency of 83% were achieved for the x = 0.125 ceramic, with the variations less than 11% and 4%, respectively, in the wide temperature range of 20–180 °C. These results demonstrate that the multiphase PNRs in the SPE state is an effective strategy for improving the energy storage performance of KNN-based ceramics.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Jizhong Deng,Ping Zhao,Zhiyi Wu,Yuanyu Wang
Flexible high-performance piezoelectric nanogenerator (PENG) excel in converting mechanical energy into electrical energy and exhibit remarkable sensitivity, a feature that is paramount for the development of self-driven piezoelectric sensors . In this study, electrospinning technology was used to prepare poly (vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] based piezoelectric nanofiber composite films containing potassium-sodium niobate nano particles (KNN NPs) and Nb 2 CT x co-doping, as well as single-component doping. The co-doped composite film attained an optimal β-phase content of 91.33%. Owing to the enhanced dipole alignment and interface charge polarization, the piezoelectric performance of the co-doped composite film was significantly enhanced compared to that of single-component doping. The co-doped piezoelectric composite film displayed a stable maximum output voltage of 20 V and an output current of 1.46 μA. The peak instantaneous power output was measured at 9.9 μW under the optimal resistive load of 10 MΩ. Durability testing over 2000 cycles affirmed the excellent mechanical stability of the piezoelectric composite film. Moreover, the fabricated piezoelectric composite film showed considerable potential in applications such as monitoring human activities and serving as an early warning system for natural disasters such as landslides, as indicated by the test results.
研究领域:
材料科学
·
能源技术
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Xuewen Peng,Bin Yang,Danjiang Deng,Zhiwei Cai,Xi Kong,Letao Yang,Jinming Guo
The application of lead-free dielectric ceramics for energy storage has received extensive attention because of their remarkable potential as pulse capacitors in power electronic devices. The current study developed a strategy for improving the energy storage performance of (K 0.5 Na 0.5 )NbO 3 (KNN)-based ceramics by incorporating Bi(Zn 2/3 Nb 1/3 )O 3 to reduce grain size, increase dielectric breakdown strength, and enhance ferroelectric relaxation degree. The resulting 0.87KNN–0.13BZN ceramics exhibited a high energy density (7.4 J/cm 3 ) and moderate energy efficiency (74%) at an ultrahigh electric field (750 kV/cm) as well as excellent optical properties. Therefore, the 0.87KNN–0.13BZN ceramic is a promising candidate for pulse capacitors, providing a feasible approach for the development of new lead-free energy storage materials.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2023
·Vol. 21
·期 1
·493-503
·
IF 2.1
Wangzhe Leng,Guoxi Wan,Yanyu Liu,Rui Ma,Yi Du
The new (0.96- x )(K 0.48 Na 0.52 Nb 0.96 Sb 0.04 )O 3 -0.04(Bi 0.5 Ag 0.5 )ZrO 3 - x (Fe 2 O 3 -In 2 O 3 ) ceramics with high dielectric, and electromechanical coupling properties were designed. In this work, the effect of KNN-based ceramics lattice distortion (c/a) and microstructure on the electrical properties was explored by varying the doping amount of Fe 3+ and In 3+ . The problem of a large number of oxygen vacancies generated by the volatilization of K and Na can be well solved by introducing Fe 3+ and In 3+ . The bulk density increases significantly and the maximum value is about 4.52 g/cm 3 .The sample with x = 0.003 has the smallest c/a, and exhibits the best piezoelectric and dielectric properties ( d 33 = 536 pC/N, ε r = 3432 and k p = 55.8 %). Low doping concentration of Fe 2 O 3 is considered a “soft” addition for KNN-based piezoelectric ceramics. The study of this mechanism provides a new idea to regulate the electrical performance of KNN-based ceramics.
研究领域:
材料科学
·
陶瓷工程
·
固体物理
✓ 已验证
DOI
高影响因子
Bioactive Materials
·
2025
·
IF 20.3
Yuhao Zheng,Shu Wang,Wenhe Jin,Zhuoxuan Li,Guoju Yang,Xiaoxu Li,Ning Li,Yue Wang,Fan Sheng,Zhiming Song
Antibacterial piezoelectric materials have broad application prospects in the medical field because of their broad-spectrum antibacterial properties and no bacterial drug resistance. At present, one of the main problems in the application of piezoelectric materials is the low electrocatalytic efficiency, which limits its application in antibacterial field. In this study, a piezoelectric antibacterial (PLGA/Zn-KNN) scaffold was fabricated by incorporating zinc oxide (ZnO) into potassium-sodium niobate (KNN) and composited with a poly (lactic-co-glycolic acid) (PLGA) to achieve multicombination antibacterial for bone infection. The physicochemical properties of piezoelectric antibacterial scaffolds were analyzed. Bacterial, cell, and animal experiments were performed to characterize the antibacterial and infection treatment capabilities of piezoelectric scaffolds. The piezoelectric properties of the PLGA/Zn-KNN scaffold were enhanced by embedding ZnO particles into the KNN solid solution matrix. Furthermore, the piezoelectric scaffold released zinc ions, and electrical stimulation driven by ultrasound resulted in significant antibacterial effects through direct and immunoregulatory antibacterial pathways. Mechanistic investigation suggested that extracellular matrix ligands and complement and coagulation cascades may have a moderate effect on macrophage phagocytosis. This work highlights potential application methods for fabricating novel antibacterial hybrid piezoelectric scaffolds and engineering macrophages with immunoregulatory antibacterial activity.
研究领域:
生物医学工程
·
骨科感染治疗
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）