JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 13
·9974-9981
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IF 2.22
Fan Xuemin,Li Peng,Du Juan,Chen Chong,Fu Peng,Hao Jigong,Yue Zhenxing,Li Wei
The (1 − x )[0.935(Bi 0.5 Na 0.5 )TiO 3 –0.065BaTiO 3 ]– x Ba(Zr 0.3 Ti 0.7 )O 3 (BNT–BT– x BZT) ceramics with high-energy storage properties were designed and characterized. All the BNT–BT– x BZT ceramics exhibit a pure perovskite structure. The grain size of ceramics becomes larger as the BZT content increases. Enhanced energy density performances ( W rec = 1.9 J/cm 3 , η = 86%) are achieved for the BNT–BT–0.4BZT ceramics at 210 kV/cm. Specifically, the energy stored in the material can be rapidly released within 0.27 µs. Excellent temperature stability with the variation of W rec less than 7% is realized in a wide temperature range from 20 to 140 °C. Moreover, the energy storage performances have good reliability after 10 5 electric field cycles. The high-energy storage performances indicate that the BNT–BT–0.4BZT ceramics are promising candidates in pulsed-power applications.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Zhen Li,Yawen Wang,He Guo,Shijia Pan,Chendong Puyang,Yingying Su,Weichuan Qiao,Jiangang Han
Development of efficient abatement technology for drugs and personal care products (PPCPs) has important scientific and practical significance to restrain its discharge to the natural water environment. This research aims to investigate ibuprofen (IBP) elimination in water film dielectric barrier discharge (DBD) plasma system driven by pulse power. With raising input power, the removal rate was improved. When input was 95 W, the removal rate and kinetic constant were up to 96.1% and 0.090 min −1 , respectively. Besides, heightening frequency, duty ratio and solution flowrate would promote the degradation of IBP. IBP were more favorably degraded at lower IBP concentration and neutral pH condition. Active species including ·OH, electron, 1 O 2 and · O 2 – dominated decomposition of IBP. The generation of O 3 , · OH and H 2 O 2 in deionized water and IBP solution was compared. UV–Vis spectrum and three dimensional fluorescence spectroscopy illustrated that IBP molecules could be decomposed effectively after DBD plasma treatment. During IBP degradation, COD and TOC was also relieved with extension of treatment time. The possible degradation routes of IBP in water film DBD plasma system were proposed based on LC-MS and Discrete Fourier transform (DFT) simulation. Based on the identified intermediates, their potential toxicity was evaluated with the help of US-EPA-TEST software. Water film DBD plasma technology was also suitable for actual wastewater treatment. The comparison of other technologies for IBP degradation was carried out finally. This work can provide exploratory platforms for comprehensively understanding and enhancing IBP degradation in DBD plasma technology.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 46
·期 18
·28173-28182
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IF 3.83
Linjiang Yu,Jia Dong,Mingyang Tang,Yi Liu,Fei Wu,Yan Yan,Gang Liu,Chunlin Song
A conventional preparation method of electroceramics was used to synthesise Pb-free 0.85Na 0.5 Bi 0.5 TiO 3 -0.15CaTiO 3 - x La (NBT-CT- x La) ceramics. La 3+ doping effectively refined the grains and enhanced the dielectric breakdown strength (BDS) of the ceramics; this result was confirmed by numerical simulations, which revealed that grain refinement significantly contributed to the enhancement of the BDS. The energy storage density consequently improved when an appropriate amount of La 3+ was added to the NBT-CT ceramics. In particular, the NBT-CT-0.75La ceramic displayed a maximum energy storage density of 2.15 J/cm 3 and a high BDS of 210 kV/cm. This ceramic also possessed relatively excellent temperature and frequency stabilities (30–150 °C, 0.2–200 Hz). Moreover, the ceramics exhibited exceptional charge–discharge performances, with an outstanding power density of 43.87 MW/cm 3 , which is nearly twice of that of other NBT-based ceramics. On the basis of the findings, the NBT-CT-0.75La ceramic can be considered to be a promising candidate material for the pulsed power application.
研究领域:
材料科学
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功能陶瓷
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电介质物理
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能源存储
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无机非金属材料
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DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 9
·5261-5268
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IF 10.7
Jianwei Zhao,Hongtian Li,Yuxiao Du,Xiaoxin Chen,Hailan Qin,Jinming Wang,Tingnan Yan,Shuhui Yu,Yongming Hu,Dawei Wang
Lead-free ceramics have received considerable research interest because of their environmentally friendly characteristics and superb performance in energy storage applications, which are critical for pulsed power electronic systems. In this work, we sintered a series of (0.90 − x)BiFeO3–xBaTiO3–0.10CaHfO3 lead-free ceramics and comprehensively probed the crystallographic structure, grain morphology, electrical properties, etc., to assess their capability for use in energy storage applications. The 0.50BiFeO3–0.40BaTiO3–0.10CaHfO3 ceramic achieved an ultrahigh recoverable energy storage density of 4.70 J cm−3 and an outstanding energy conversion efficiency of 79% and can be considered an excellent material candidate for use in high-power energy storage devices.
研究领域:
材料科学
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电气工程
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能量存储
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Weijia Guo,Peiyao Zhao,Zhenxing Yue
Passive electronic components made from dielectric ceramics can hardly operate at extremely high temperatures, which is attributed to the sharply increasing dielectric loss and leakage conductance. In this work, the widely applicated CaTiO 3 ceramics are used as the matrix, and the high-temperature electrical properties are modified by doping Sm 3+ and Al 3+ . The Sm-doping in CaTiO 3 ceramics can significantly suppress the dielectric relaxation at low frequencies and reduce the high-temperature leakage conductance. Continued doping of Al in Ca 0.6 Sm 0.27 TiO 3 ceramics can further reduce the high-temperature dielectric loss and conductivity. These changes are associated with tighter crystal structures and fewer defects in the ceramics. With Sm and Al doping, the high-temperature dc conductivity of the ceramics is reduced by about 4 orders of magnitude, and a dielectric loss of less than 0.02 and a low temperature cofficient of capacitance (TCC) of − 25 ppm/℃ are obtained over a wide temperature range of room temperature to 530 ℃. Outstanding temperature stabilities are exhibited over a temperature range of 25 ∼ 200 ℃ in energy storage performance and charge-discharge property. Extremely fast discharge speed ( t 0.9 = 16 ns) makes it suitable for pulsed power electronic systems. Such linear dielectric materials are expected to be used in harsh environment of high temperatures.
研究领域:
材料科学
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电气工程
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陶瓷
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2017
·Vol. 28
·期 11
·8043-8050
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IF 2.019
Chen Jianwen,Yu Xinmei,Yang Faquan,Fan Yun,Jiang Yewen,Zhou Yuexia,Duan Zhikui
High-energy-density flexible composite films, using one dimension BaTiO 3 @Ag nanofibers (BT@Ag NFs) as fillers and PVDF as polymeric matric, have been prepared by solution casting and the following hot compressing molding. The BT@Ag NFs have been prepared by electrospinning and then chemical deposition method. The dielectric constant, dielectric loss, breakdown strength and energy density were studied systematically. The maximum dielectric constant is 42.8 at 1 kHz in the nanocomposites loading with 15 vol% BT@Ag NFs, which is about 515% larger than that of the pristine PVDF (8.3 at 1 kHz). The energy density of the 2.5 vol% BT@Ag NFs/PVDF nanocomposites is 7.75 J cm − 3 at 3500 kV m − 1 , which is about 645% over the biaxially oriented polypropylenes (1.2 J cm − 3 at 6400 kV m − 1 ). The enhanced energy density may be ascribed to the Coulomb block effect. Such improvements are of potential importance for preparation of high-energy-density nanocomposites.
研究领域:
材料科学
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电气工程
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纳米技术
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复合材料
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xiaofan Sun,Cuiping Xu,Peiqi Ji,Zheng Tang,Shulin Jiao,Yanzhou Lu,Min Zhao,Hong-Ling Cai,X.S. Wu
Dielectric capacitors are used in pulsed power devices due to their high-power density. The energy storage density and efficiency need to be further improved to widen their applications. This work investigates the energy storage of high entropy ceramic (Pb 0.25 Ba 0.25 Ca 0.25 Sr 0.25 )TiO 3 synthesized by the solid-state method. The Bi(Mg 2/3 Nb 1/3 )O 3 (BMN) is introduced to enhance its energy storage performance. The introduction of BMN from x = 0 to 0.15 reduces the grain size from 5.9 μm to 245 nm, increases the band gap from 2.98 to 3.05 eV, and improves the differences between saturation and remnant polarization from 11.85 to 14.60 μC/cm 2 . The phase diagram of this system was constructed by dielectric properties analysis to understand the effect of Bi(Mg 2/3 Nb 1/3 )O 3 in the energy storage performance. The optimal energy density of 5.58 J/cm 3 and efficiency of 89.4% was achieved in 0.9PBCST-0.1BMN which can be promising candidates for application in dielectric energy storage.
研究领域:
材料科学
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电气工程
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能源存储
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Jiaxuan Lu,Zhonghua Yao,Hua Hao,Minghe Cao,Hanxing Liu
Field-driven transition from antiferroelectric (AFE) to ferroelectric (FE) states has gained extensive attention for microelectronics and energy storage applications. High dielectric-breakdown-strength (DBDS) for a given material is a necessity to attain full capacity of electrical energy storage . An approach to increasing energy performances is to modulate the related materials to own a higher phase transition electric field ( E FE-AFE ) using elemental dopants . In this case, Cd 2+ was selected as the dopant at A-site in the Pb 0.97 La 0.02 Zr 0.50 Sn 0.45 Ti 0.05 O 3 ceramics to tailor this E FE-AFE value due to the ionic difference enhanced antiferroelectricity. Surprisingly, the doped ceramics increased E FE-AFE by half, DBDS by 16 %, and maintained energy storage efficiency η of over 85 %, providing a way to improve energy storage density. It is worth mentioning that while the performance has been improved, the sintering temperature has been reduced by 170 °C. At the same time, the ceramics maintain good temperature stability, extremely fast discharging speed and discharging energy storage density, indicative of a promising choice in pulse power devices.
研究领域:
材料科学
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电气工程
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陶瓷
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能量存储
✓ 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）