JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
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2022
·
IF 3.027
Hua Jiao,Jiechen Jin,Kang Zhao,Xue R Zhou,Xinyuan Zhang,Sen Song,Jia Wang,Yufei Tang,Guodong Cui
Barium titanate (BaTiO3) is a typical perovskite-type oxide with high dielectric constant, low dielectric loss, and excellent ferroelectric, piezoelectric, pyroelectric, and other properties. In view of the low photogenerated electron-hole separation efficiency of T-BT itself, it is proposed to prepare nanocomposites with good catalytic performance by compound modification with Ag. Considering repeated use, on the basis of powder catalysis, a porous block is prepared by compounding powder and organic polymer PVDF. In this study, the t-BaTiO3/Ag/β-PVDF composite material with porosity of ∼70.4% was prepared with the raw material of PVDF and piezoelectric t-BaTiO3/Ag. The mechanical and piezoelectric photocatalytic properties of the composite material was studied systematically. The piezoelectric coefficient d33 is 1.44 pC/N which can be explained by COMSOL simulation calculation. Moreover, the compressive strength is 1.76 MPa. The degradation MO and RhB results indicated that t-BaTiO3/Ag/β-PVDF composite material had good degradation and cycle stability.
研究领域:
材料科学
·
催化化学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2022
·
IF 8.663
Zuhui Shi,Zemin He,Chunsheng Li,Zongcheng Miao,Dong Wang,Yi Luan,Yuzhan Li,Yuzhen Zhao
In this paper, polymer-dispersed liquid crystal (PDLC) films were prepared from a blend of prepolymer, liquid crystal and BaTiO 3 (BTO) nanoparticle-laden nanofibres films by a polymerisation-induced phase separation (PIPS) method. By contrasting the microstructure and electro-optical curves of various proportions of monomer types, it was demonstrated that the hole size of the polymer network had a significant influence on the electro-optical nature of the PDLC films. nanofibres films loaded with different BTO nanoparticle contents were introduced into the liquid crystal mixture specimens, and the alterations in the polymer network, electro-optical nature of these specimens were analysed using SEM images, EDS and electro-optical curves. The electro-optical nature of the nanofibres films doped with PDLCs were found to be improved and the ageing resistance was greatly enhanced. Therefore, the development of PDLC films with faster response times and better electro-optical nature of reticular nanofibres films doped with PDLCs will significantly improve the promising technological applications of PDLC-based equipment for optical windows, displays, energy storage and flexible devices.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 19
·24496-24506
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IF 2.478
Cheng Shuai,Zhang Bo-Ping,Wang Li-Jun,Yang Tao,Yuan Chang-Lai,Zhou Chang-Rong,Rao Guang-Hui,Yin Yang
The enhanced piezoelectric and ferroelectric properties of the tetragonal 0.67BiFeO 3 –0.33BaTiO 3 (BF–33BT) ceramics without MnO 2 doping or other dopants via tailoring sintering temperature ( T S ) and dwell time ( t d ) are reported. All ceramics crystallized in a single tetragonal phase, independent of the adopted T S and t d . As the T S or t d is increased, the BF–33BT ceramics show an increase in grain size and in relative density, while T S > 980 °C or t d > 6 h would result in more oxygen vacancies caused by Bi 3+ evaporation and/or reduction of Fe 3+ to Fe 2+ , along with a reduced relative density and an increased current leakage density. Because of the increased grain size, the higher relative density, and relatively less oxygen vacancies, high d 33 = 151 pC/N and P r = 25.9 μC/cm 2 were achieved in tetragonal BF–33BT ceramics with T S = 980 °C and t d = 6 h. In addition, large unipolar strain of 0.146% and \(d_{33}^{*}\) =326 pm/V (40 kV/cm), as well as high T C = 427 °C were also obtained in the BF–33BT ceramics with T S = 980 °C and t d = 6 h. Our studies indicate that the grain size, the relative density, and the oxygen vacancies play important roles for the piezoelectric properties of BF–33BT ceramics.
研究领域:
材料科学
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物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jia Liu,Cuiying Ma,Xing Zhao,Ke Ren,Ruiying Zhang,Furong Shang,Huiling Du,Yiguang Wang
High-entropy (1− x )Bi 0.5 Na 0.5 K 0.5 Ba 0.5 Ca 0.5 TiO 3 - x BaTiO 3 (BNKBCT-BT, x = 0.02, 0.06, 0.10, 0.14 and 0.20) ceramics are successfully prepared via the solid-state reaction method. The XRD and Raman analyses reveal that all samples exhibit a pseudo-cubic phase structure. With increasing x , the a is gradually increased, resulting in the expansion of unit cell volume. A strong frequency dispersion appeared around T m , demonstrating that the as-prepared ceramics is a relaxor ferroelectric . Owing to the increase in the degree of lattice disorder, as well as relaxation and thermal evolution of PUs, the as-prepared ceramics exhibit a broad relaxor behavior. The Δ P is effectively increased by doping BT, which is conducive to achieving excellent energy storage properties. Moreover, W rec of all samples is more than 1.31 J/cm 3 and, at x = 0.20, W rec reaches the maximum value of 2.24 J/cm 3 at 140 kV/cm. These results indicate that high-entropy (1− x )BNKBCT- x BT ceramics are promising materials for energy storage applications.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Advanced Dielectrics
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2019
·
IF 0
Yue-Mao Dang,Ming-Sheng Zheng,Jun-Wei Zha
The influence of thermal treatment on the dielectric properties and energy storage performances of a classical dielectric nanocomposite system (barium titanate/polyvinylidene fluoride PVDF) was discussed systematically. The results demonstrated that the permittivity of thermal treated nanocomposites increased and dielectric loss decreased compared with the untreated system. In addition, the energy density was also greatly improved due to the inclined residual polarization. For example, the energy density of the treated nanocomposite with 50 vol.% nanofillers was 3.14 times higher than the untreated nanocomposite at 50 MV/m. Moreover, the charge–discharge efficiency was also promoted from 6.36% to 56.89%. According to the viewpoint of microstructure, the improvement of the dielectric and energy storage properties would be ascribed to the suppression on void defects in the interphase of dielectric nanocomposite by employing the thermal treatment process. Finally, thermal treatment turns out to be a simple and an effective method to improve the dielectric performances and energy storage properties in the dielectric nanocomposites.
研究领域:
材料科学
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能源工程
✓ 已验证
DOI
POWDER TECHNOLOGY
·
2016
·
IF 2.759
Hamid Ghayour,Majid Abdellahi
Due to the wide range of applications of ceramics , interest in investigating all the parameters that influence the properties of these materials has constantly been on the increase. In the past fifty years, various studies were conducted on the effects of grain size on the properties of different ceramics. These researches provided evidence for a behavior shared by ceramics. In the present study, a brief report of the effect of grain size on the electrical properties of the BaTiO 3 -based ceramics, which are extensively used materials in electrical industries, is presented for the first time. As the range of electrical properties of this type of ceramics is quite extensive, this paper focuses on basic issues such as dielectric and piezoelectric properties alongside polarization of BT-based ceramics. The review demonstrates that despite the same behavior of these ceramics in terms of grain size alterations, there are still inevitable parameters in the course of experiments which can change this behavior.
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 MATERIALS SCIENCE
·
2019
·Vol. 55
·期 4
·1499-1510
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IF 3.442
Wu Han,Xie Qing,Duan Qijun,Yan Jiyuan,Yin Kai
Composite dielectrics with excellent electrical properties are integral to today’s energy industries and power infrastructure. Epoxy resin filled with inorganic nano-fillers has been extensively studied for its excellent performances. In this paper, barium titanate (BaTiO 3 ) nanoparticles are selected as the fillers and fluorinated by plasma treatment. The morphology, element content and chemical bond of BaTiO 3 and fluorinated BaTiO 3 fillers are characterized by SEM, EDS, XPS and FTIR, respectively. The influence of filler concentration and fluorination on flashover voltage of epoxy resin composites was studied. We found that the fluorinated BTO could improve the compatibility of filler and matrix and surface insulation of epoxy resin composites. Finally, the relationship between filler concentration, dielectric constant, fluorination treatment and charge dissipation was analyzed, and the trap distribution on the surface of composites was calculated by isothermal surface potential decay method. Fluorinated BaTiO 3 particles as fillers blended with epoxy resin have great engineering application potential.
研究领域:
材料科学
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电气工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2015
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IF 2.605
M. Wang,W.L. Li,Y. Feng,Y.F. Hou,T.D. Zhang,W.D. Fei,J.H. Yin
BaTiO 3 nanowires/polyimide (BT-NWs/PI) and BaTiO 3 nanoparticles/polyimide (BT-NPs/PI) composites with low volume (≤10vol%) fraction of ceramic fillers were successfully prepared by in-situ dispersive polymerization. The BT-NWs were synthesized by a simple one-step hydrothermal method . The microstructure, dielectric properties , and energy storage density of the composites were studied. It was found that the two types of fillers were dispersed homogeneously in the PI matrix. Compared with BT-NPs/PI composites, the dielectric constant of composites filled by BT-NWs was larger at the same concentration. Stronger interfacial polarization mainly determined the dielectric properties that we observed on BT-NWs/PI composites. Furthermore, the energy storage density of the composites was significantly enhanced by BT-NWs, and energy storage density of 1.06 J/cm 3 was obtained under an electric field of 2200 kV/cm with the BT-NWs content of 2 vol%, which was 37% larger than that of the pure PI. The results indicate that the introduced wire-like ceramic fillers contribute to the enhancement of the dielectric properties and energy storage density of the composites.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Keyu Chen,Ruiqi He,Jiacheng Guo,Lu Ye,Xi Chen,Changning Ran,Xinrui Yan,Jianjun Zhang,Sude Ma
(1- x ) BaTiO 3 – x Bi(Mg 0.25 Zn 0.25 Ti 0.5 )O 3 ( x = 0.00, 0.06, 0.12, 0.20,molar ratio) ceramics were prepared by solid sintering method. The effects of Bi(Mg 0.25 Zn 0.25 Ti 0.5 )O 3 (BMZT) doping on microstructure, dielectric, ferroelectric and energy storage properties of BaTiO 3 (BTO) were studied. With BMZT addition, the sintering temperature gradually decreases, the grain size reaches a minimum at x = 0.12 and the phase structure changes from tetragonal to cubic. And dielectric properties changed from temperature-dependent to temperature-insensitive. Additionally, higher cubic phase content induced slim polarization and electric field (P-E) loop and low remnant polarization (P r ). Therefore, 0.88 BaTiO 3 - 0.12 Bi(Mg 0.25 Zn 0.25 Ti 0.5 )O 3 ceramics achieved recoverable energy storage density (W rec ) of 702.7 mJ/cm 3 and high energy efficiency of 87.3 % under electric field of 93 kV/cm. It exhibited optimum properties, including a minimum grain size (0.620 μm), superior dielectric properties (ε r = 1811.3, tanδ = 0.0552 at 1150 °C), a high maximum polarization strength (14.3 μC/cm 2 ), and the maximum dielectric breakdown strength (93 kV/cm), as identified in the present study. It simultaneously maintains high energy storage density and efficiency over a wide electric field range and large temperature range (room temperature - 90 °C). Thus (1- x ) BaTiO 3 – x Bi(Mg 0.25 Zn 0.25 Ti 0.5 )O 3 ceramics are a promising material for energy storage applications.
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
JOURNAL OF ELECTRONIC MATERIALS
·
2020
·Vol. 49
·期 4
·2608-2616
·
IF 1.774
Chen Gang,Ji Cong,Fan Tao,Li Jiahua,Fu Chunlin,Cai Wei,Gao Rongli,Wang Zhenhua,Deng Xiaoling,Fan Peigeng
The (1 − x ) Bi (Fe 0.9 Al 0.05 Yb 0.05 ) O 3 – x BaTiO 3 (BFAYO- x BTO) ceramics were synthesized by microwave sintering (MWS) and conventional sintering (CS) methods. The crystal structure, surface morphology, dielectric and ferroelectric properties were investigated. XRD patterns show that BTO tetragonal and BFO rhombohedral phases coexist in both MWS and CS samples, and that the diffraction peaks of MWS samples shift to lower angles due to the larger ionic radius of Ba 2+ compared with Bi 3+ . The lattice constant of BFAYO- x BTO ceramics increases with the increase of BTO content. It was found that the average grain size of the MWS ceramic is much smaller than that of the CS ceramic. Dielectric measurements reveal that the dielectric loss and dielectric constant increase with BTO content increasing. The introduction of BTO into BFAYO-based ceramic contribute to the enhancement of the dielectric relaxation behavior. The P – E hysteresis loops demonstrate that the remnant polarization ( P r ) and the coercive field ( E C ) of the MWS samples are smaller than those of the CS samples. P r and E C first increase, then decrease and then increase again with the increase of BTO content. The maximum and minimum values of the remnant polarization were obtained at x = 0.25 and 0.3, respectively.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2021
·
IF 8.301
C. Ji,T. Fan,G. Chen,X. Bai,J. Wang,J. He,W. Cai,R. Gao,X. Deng,Z. Wang,X. Lei,C. Fu
The (1- x )BiFeO 3 - x BaTiO 3 (short for (1- x )BFO- x BTO, x = 0.2–0.4) ceramics were prepared by solid-state reaction with microwave sintering (MWS) and conventional sintering (CS) methods. The crystal structure, microstructures, dielectric properties , ferroelectric properties , and magnetic properties of BFO-BTO ceramics sintered by MWS and CS were systematically investigated. It is found that the MWS can effectively decrease the grain size and enhance the compactness of BFO-BTO ceramics. The X-ray diffraction (XRD) results confirm that all ceramics exhibit a single perovskite structure, and the phase transforms from rhombohedral in BiFeO 3 -rich compositions to pseudo-cubic phase gradually as x increases. Introducing BTO into BFO can strengthen its dielectric relaxation behavior. Compared with CS, the MWS samples have a lower remanent polarization ( P r ) and a smaller coercive field ( E c ) under the same electric field. Therefore, MWS contributes to the decrease of dielectric loss. Addition of BTO can contribute to the reduction of the coercive force ( H c ) of BFO-based ceramic, and so decrease the hysteresis loss. At the same time, its remanent magnetization ( M r ) value can be decreased by introducing BTO into BFO and using MWS method. The present research provides a route for decreasing the dielectric loss and hysteresis loss of BiFeO 3 -based ceramics using the MWS method.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Kaiping Tian,Guiqiang Fei,Siying Li,Yuanhong Han,Chen Wang,Qingyuan Chen,Wanfen Pu,Muming Wang
The challenges of difficult injection and low recovery in low-permeability reservoirs significantly impact production efficiency. Nanofluid flooding presents a viable approach to improve to enhance recovery in such reservoirs. In this study, an amphiphilic J nano-BaTiO 3 particle (JNB-P) with a particle size of 50–90 nm was synthesized. Characterization results indicated that, compared to unmodified Nano BaTiO 3 particles, the JNB-P molecules introduced long-chain groups, leading to improved dispersion and a transition of the particle surface from hydrophilic to amphiphilic. Settling experiments identified the optimal dispersive nanofluid (JNB-FS) as a combination of 0.25 % PEG400 and 0.025 % JNB-P, with complete settling time for nanoparticles decreased as temperature or salinity increased. Emulsification experiments demonstrated that, at a water-to-oil volume ratio of 5:5, JNB-FS and crude oil successfully emulsified into an O/W emulsion with an average particle size of 0.791 μm. Interfacial tension experiments revealed that the interfacial tension of oil–water decreased by more than 50 times after adding JNB-FS. Furthermore, with increasing temperature, the degree of emulsification initially increased before decreasing, while emulsion stability, interfacial tension, and expansion modulus gradually decreased. As salinity increased, the degree of emulsification and emulsion stability declined, with interfacial tension first decreasing and then increasing, and the expansion modulus initially rising before falling. Wetting improvement experiments indicated that the core transitioned from lipophilicity to strong hydrophilicity after soaking in JNB-FS for 60 h. Finally, flow experiments demonstrated that compared to first water flooding, the oil recovery increased by 15.82 %. The oil displacement mechanism of JNB-FS primarily involved reducing interfacial tension, enhancing rock wettability, emulsification, and improving the permeability of the injected water via nanoparticles.
研究领域:
石油工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）