International Journal of Applied Ceramic Technology
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2026
·Vol. 23
·期 1
·e70135
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IF 2.3
Yihao Lin,Bingqing Yang,Cong Lin,Xiao Wu,Chunlin Zhao,Min Gao
The electric-field-modulated photoluminescence ( E -PL) performance of rare-earth-doped ferroelectric (FE) materials has been widely studied. However, the hysteresis effect in FE materials limits the tunability of E -PL modulation. Antiferroelectric (AFE) materials possess a reversible AFE-FE phase transition, inducing changes in crystal structure that can significantly affect the E -PL intensity. In this work, Sm/Mn-codoped silver niobate ceramics (ASMN x , x = 0, 0.5, 1, 1.5, 2) were fabricated via the tape-casting method, and the AFE properties, thermal stability, and E -PL performance were systematically investigated. The results show that the addition of Sm and Mn ions effectively inhibits the growth of grains and enhances the AFE properties. Upon irradiation at 480 nm, the samples exhibit a down-conversion PL effect, and the PL intensity increases with increasing Sm 3+ doping concentration. The in situ modulation of the PL intensity is reversibly achieved through the E -induced AFE-FE phase transition. Among them, ASMN1 shows the best tunability of −30.18% at 300 kV cm −1 . The excellent E -PL tunability in the lead-free ASMN x ceramics contributes to the broad applications in optical information storage, optical communication, and multifunctional optoelectronic devices.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Renzhong Xue,Mingpu Li,Xiaosong Liu,Zhihao Zhao,Haiyan Wang,Tingting Zhang,Jing Chen,Tao Li,Xiang Zhu,Zhezhe Wang
Lead-free antiferroelectric AgNbO 3 (AN) ceramics hold significant potential for pulsed power systems; however, their inferior energy storage density and efficiency limit their practical deployment. Optimizing performance under moderate electric fields (300–500 kV cm −1 ) is particularly critical for industrial viability. Herein, a Bi 3+ /Yb 3+ A-site co-doping strategy is proposed to optimize the microstructural characteristics and improve the electrical properties of AN ceramics. The synergistic doping effect effectively enhances antiferroelectric stability and dielectric relaxation behavior, while concurrently suppressing the rapid decay of saturation polarization intensity. Furthermore, refined grain size and a widened band gap jointly improve the breakdown electric field strength. Benefiting from such multi-scale modulation, Ag 0.82 Bi 0.03 Yb 0.03 NbO 3 (ABYN3) ceramic demonstrates a high recoverable energy density of 6.8 J cm −3 and an energy efficiency of 77% under an applied field of 431 kV cm −1 . Moreover, ABYN3 demonstrates superior thermal stability, high frequency tolerance, and resistance to cyclic fatigue. Charge–discharge measurements reveal that ABYN3 exhibits a discharge energy density of 4.06 J cm −3 and an ultrahigh power density of 144 MW cm −3 at 300 kV cm −1 , along with an ultrafast discharge speed (t < 100 ns). This study presents a feasible and effective strategy for performance optimization of lead-free antiferroelectric ceramics, providing valuable guidance for their practical industrial applications in pulsed power systems.
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CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Zehan Zheng,Yuqing Yang,Lei Zhao,Kongjun Zhu,Hao Yang,Jing Wang
The unique antiferroelectric behavior of AgNbO 3 ceramics has great potential for energy storage applications, which have attracted increasing attention. However, the relatively low recoverable energy storage density, energy efficiency and breakdown strength of AgNbO 3 ceramics severely limit their application in practice. In the present work, (Bi 0.2 Sr 0.7 )TiO 3 was introduced to improve the relaxation behavior in AgNbO 3 ceramics via two-step sintering, which contributed to a high breakdown strength of 580 kV/cm. A recoverable energy storage density of 7.8 J/cm 3 and an energy efficiency of 56 % were obtained in 0.90AgNbO 3 -0.10(Bi 0.2 Sr 0.7 )TiO 3 ceramics. Moreover, the benign energy storage performance could be maintained at elevated temperatures, variable frequencies and cyclings up to 10 5 . These results demonstrate the great potential of AgNbO 3 -based ceramics for energy storage applications.
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DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 7
·2949-2956
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IF 3.5
Wenna Chao,Juan Du,Peng Li,Wei Li,Tongqing Yang
Large hysteresis and low energy density of pure AgNbO3 ceramics limit their further application in pulsed power techniques. Here, less-harmful Sm2O3-modified AgNbO3 antiferroelectric ceramics were synthesized by a rolling process, in order to improve the energy storage performance. All the Sm2O3-doped samples display reduced hysteresis due to disrupted long-range order, as certified by Raman spectra. As expected, due to the large dielectric breakdown strength and reduced hysteresis, an improved energy storage density, Wrec, of 5.85 J cm−3 and satisfactory energy efficiency, η, of 77% can be simultaneously achieved in the studied antiferroelectric ceramics, showing great superiority over other bulk electronic ceramics. Along with excellent temperature stability within the range of 20–150 °C at 320 kV cm−1 (Wrec > 4.3 J cm−3, with minimal variation of ≤4%) in the studied samples, this shows that AgNbO3-based environmentally friendly ceramics are promising materials for pulsed power techniques.
研究领域:
材料科学
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能源技术
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
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IF 4.495
Jing Wang,Xinhong Wan,Yu Rao,Lei Zhao,Kongjun Zhu
Silver niobate AgNbO 3 ceramics have been regarded as a promising lead-free material for energy storage applications. In present work, pure and fine AgNbO 3 powders were successfully fabricated via the hydrothermal method using AgNO 3 as the raw material. It is found that the reaction products show strong dependence on the molar ratio of NH 4 HF 2 :AgNO 3 :Nb 2 O 5 , pH value and reaction time. Pure AgNbO 3 powders were obtained when the process conditions are 3NH 4 HF 2 :2AgNO 3 : x Nb 2 O 5 with x ≤0.85 or y NH 4 HF 2 :2AgNO 3 :1Nb 2 O 5 with y = 4–5, pH = 5 and reaction time t ≥ 10 h. Benefitting from the hydrothermal synthesised AgNbO 3 powders, AgNbO 3 ceramics with fine-grain of ∼3.4 μm were obtained. The fine-grain leads to increased electric breakdown strength E b up to 250 kV/cm, which is the highest among the pure AgNbO 3 ceramics to our best knowledge. The further enhancement in E b and recoverable energy density could be highly anticipated if the antiferroelectric phase could be stabilized.
研究领域:
材料科学
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能源存储
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 108
·期 6
·e20425
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IF 3.8
Liping Tong,Zhiyuan Zhao,Zhongyang Wang,Xianhao Lan,Simeng Chen,Yang Xu,Miaosen Yang,Zhiya Han,Yixin Liu,Yue Kang,Xiyang Liu,Su Zhao,Tao Zhou,Tongxiang Fan
Adaptive photothermal management (APM) materials with large emissivity variation and low solar absorptivity are vital in the field of smart thermal control. However, the related variable emission mechanism in phase-changing progress for adaptively photothermal modulating material suffers from drawbacks of diversity, complexity and uncertainty. Herein, AgNbO 3 (ANO) is discovered as a new promising APM material with low solar absorptivity and large emissivity variation after density functional theory (DFT) calculation and experimental demonstration on five types of phases for ANO. The ANO ceramic is prepared by solid-state reaction method with high temperature, appearing ferrielectric orthorhombic (M1, Pmc2 1 ), antiferroelectric orthorhombic (M2, Pbcm), antiferroelectric orthorhombic (M3, Pbcm), paraelectric orthorhombic (O, Cmcm), and paraelectric tetragonal (T, P4/mbm) phases. Meanwhile, the obtained ANO ceramic has both a low solar absorptivity of 0.1886 in 250–2500 nm, and exhibits a large emissivity variation of 0.4242 in 300–860 K. The comprehensive performance of both low solar absorptivity and large emissivity variation for ANO ceramic is superior to the best available intelligent thermal control materials (low solar absorptivity and large emissivity variation are difficult to coexist in one component). The low solar absorptivity, dielectric permittivity, and phase transition temperature could be attributed to the big crystallite size, while the influence of surface crystallite size on average emissivity could be ignored. Additionally, mechanisms of Nb─O and Ag─O bonds for the emissivity in phase-changing progress are proposed by establishing the relationship between the orbital character of the density of states and the infrared emissivity. Furthermore, the effect of polarization on emissivity is revealed. This work will guide APM materials selection and preparation toward desired emissivity and solar absorptivity to satisfy numerous applications.
研究领域:
材料科学
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智能热控
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功能陶瓷
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相变材料
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能量管理
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 23
·12632-12642
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IF 14.511
Liang Shu,Xin Zhang,Wei Li,Jing Gao,Hongliang Wang,Yu Huang,Yue-Yu-Shan Cheng,Qian Li,Lisha Liu,Jing-Feng Li
AgNbO3-based antiferroelectric films have attracted emerging attention in the field of dielectric energy storage and possess promising applications in photocatalysis and microwave devices. Unfortunately, it remains a challenge to fabricate pure-phase AgNbO3 films on Si substrates, precluding their further integration into electronic devices. Here, we, for the first time, report phase-pure AgNbO3 films on Pt/Ti/SiO2/Si substrates by a chemical solution deposition (CSD) method. A facile CSD route without using the hazardous pyridine additive is demonstrated to obtain a stable AgNbO3 precursor for spin-coating films. By comprehensively controlling the heat treatment conditions, secondary phases are eliminated in the deposited films. The phase transitions of the AgNbO3 films are also investigated, where intriguingly the room temperature phase is determined to be the antiferroelectric M2 phase, rather than the commonly reported M1 phase in bulk AgNbO3. Meanwhile, the relative dielectric permittivity surpasses 300 at room temperature and maintains at ∼400 with low dielectric loss (<0.05; measured at frequencies of 0.1–1 MHz) over a wide temperature range of 150–350 °C, within a 5% variation. This work provides an easy-to-implement process of AgNbO3 films which may attract scientific interests and potential applications.
研究领域:
材料科学
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电子工程
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能源存储
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高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yuqing Yang,Weipeng Liu,Xiangshuai Wang,Ting Tang,Lifeng Zhu,Lei Zhao,Kongjun Zhu,Jing Wang
Antiferroelectric (AFE) ceramics are competitive energy storage candidates for advanced high-power devices. However, the poor recoverable energy density and efficiency are challenging and severely hinder their applications. Here, superior energy storage performance is obtained in Bi3+-, Sr2+-, and Ta5+-codoped AgNbO3-based ceramics. Specifically, with the effective phase modulation via Bi3+, the paraelectric T phase stabilizes at room temperature and facilitates a recoverable energy storage density of 9.27 J/cm3 and an efficiency of 83.2% in (Ag0.71Bi0.07Sr0.04)(Nb0.85Ta0.15)O3 ceramics. The corresponding multilayer ceramic capacitor (MLCC) further promotes the recoverable energy storage density to 14.32 J/cm3 and efficiency to 97.8%, which is almost the best comprehensive energy storage performance among AN-based ceramics and MLCCs to the best of our knowledge. The proposed strategy is generally applicable to design high-performance energy storage devices and other functionalities of AFE dielectric materials.
研究领域:
材料科学
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电子工程
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Coatings
·
2023
·Vol. 13
·期 3
·534
·
IF 3.4
Ke An,Gang Li,Tingting Fan,Feng Huang,Wenlin Wang,Jing Wang
AgNbO3-based ceramics have been widely studied as ideal lead-free materials. Herein, AgNbO3:xCeO2(x= 0, 1, 2 mol%) ceramics were successfully prepared by the conventional solid-state reaction method. The optimization of energy storage properties is ascribed to the enhanced antiferroelectric (AFE) stability and the increased breakdown strength (Eb). The reduction of the tolerance factor leads to the enhancement of AFE stability. In addition, the enhancement ofEbis due to the increase of actual density, which is achieved through the regulation of CeO2amount and grinding procedure in the experimental process. A high recoverable energy density (Wrec) of 5.04 J/cm3and an energy efficiency (η) of 46.2% were achieved in AgNbO3:0.01CeO2ceramics under an applied electric field up to 390 kV/cm. A higherηof 55.4% was obtained in AgNbO3:0.02CeO2components. This research provides guidance for finding ceramic materials with comprehensive energy storage properties.Keywords:antiferroelectric materials;energy storage performance;AgNbO3;breakdown strength;grain size heterogeneity
研究领域:
材料科学
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能源存储
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Hao Yuan,Xuhui Fan,Zehan Zheng,Mingyuan Zhao,Lei Zhao,Kongjun Zhu,Jing Wang
Dielectric capacitors with large power densities are indispensable components in advanced electric and electronic devices. However, the limited energy density and efficiency are challenging and badly restrict their utilization in practice. Here, fine-grains, increased resistivity and activation energy, optimized maximum polarization, and benign relaxation features are simultaneously achieved in AgNbO 3 -based ceramics via a multi-scale synergistic design, combining hydrothermal methods with Bi and Sr doping. As a result, we synergistically realized high breakdown strength of 702 kV/cm, large recoverable energy storage density of 7.9 J/cm 3 and benign energy efficiency of 75.5 % in (Ag 0.80 Bi 0.04 Sr 0.04 )NbO 3 ceramics. Furthermore, excellent temperature-, frequency-, cycling-stability and ultrahigh discharge energy density of 5.6 J/cm 3 were simultaneously achieved in (Ag 0.80 Bi 0.04 Sr 0.04 )NbO 3 ceramics, indicating a promising candidate for competitiveness and development in advanced high-power applications.
研究领域:
材料科学
·
电子工程
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