CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Jian Zhang,Rui Huang,Cheng Tao,Hua Hao,Zhonghua Yao,Hanxing Liu,Minghe Cao
Amorphous films have excellent breakdown strength and energy storage efficiency, and have broad application prospects in dielectric film capacitors. However, its low polarization greatly limits the increase of energy storage density. In this paper, (Ba 0.92-x Bi 0.08 La x )(Ti 0.96-0.5x Ni 0.04+0.5x )O 3 (BBLTN) amorphous films were fabricated by sol-gel method. The effects of Bi, Ni and La ion doping on the electrical properties and energy storage properties of the films were studied. When x = 0.04, the film can produce an ultra-high recoverable energy storage density of 121.7 J cm −3 and an efficiency of 70.6%, and possesses outstanding stability at 20 °C–130 °C and 1-10 5 cycles. Combined with X-ray photoelectron spectroscopy analysis, researchers believe that the improvement of energy storage performance may be related to the dipoles formed by N i N i . . and T i T i ′ defects induced by multi-ion doping. This contribution provides a feasible way for the research of high-performance dielectric film capacitors.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Guoliang Xue,Zhiguo Wang,Jun Cao
In the search for dielectric material with high energy storage density, a ceramic system of 0.8Na 0.5 Bi 0.5 TiO 3 –0.2K 1- x Li x TaO 3 (NBT-KLT- x , x = 0.1–0.5) is proposed in this work. The addition of Li 2 CO 3 is conducive to the decrease of sintering temperature of ceramics. Moreover, the XRD diffraction data of sintered ceramics indicate that pure perovskite phase showing the pseudo-cubic structure can be achieved when x = 0.1–0.3 while the excessive addition of Li 2 CO 3 leads to the formation of pyrochlore phase. Based on the Rietveld refinement and Raman results, the Li + doping in the NBT-KLT- x solid solutions ( x = 0.1–0.3) can improve the phase content of P 4bm, induce the lattice expansion and structural change towards a higher-symmetry phase. TEM observation also demonstrates the reduction in the size of polar nanoregions. With increasing x from 0.1 to 0.5, both the oxygen vacancy concentration and grain size display a tendency to decrease first and then increase. For the x = 0.2 ceramics with the lowest oxygen vacancy concentration and grain size, the largest electrical breakdown strength and lowest polarization hysteresis are achieved, giving an excellent recoverable energy storage density of 4.86 J/cm 3 under 32 kV/mm, accompanied by a high efficiency of 90.46 %. Additionally, the recoverable energy density achieves a high level of ∼3.5 J/cm 3 and energy storage efficiency is larger than 80 % over 28–160 °C, suggesting the outstanding temperature stability.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Xiaohui Tang,Hongjun Zhang,Fangzhe Li,Dongliang Wang,Yong Huang,Hua Ke
Dielectric capacitors play an increasingly important role in power systems because of their fast charging and discharging speed. Applications are usually limited due to the low W rec . We design materials with high values of Δ P ( P max - P r ) and recoverable energy storage density( W rec ) from the high entropy perspective. Two single phases with a large Curie temperature T c difference have been selected, which leads to the enlarged entropy. The ceramics (Bi 0.85 Nd 0.1 Sm 0.05 ) 1- x Ba x )(Fe 1- x Ti x )O 3 (BNSBFT x ) are prepared by the solid-state reaction. As x increases, the corresponding configuration entropy( S config ) goes from 1.4 R to 1.52 R. The increased entropy destroys the long-range order, accompanied by the reduced remanent polarization( P r ) and the improved W rec . The W rec of BNSBFT 0.5 ceramics reaches 4.9 J/cm 3 at a low field of 250 kV/cm. Both temperature change(∼ 0.5% from 30 °C to 140 °C) and frequency variation(∼ 4.8% from 1 Hz∼50 Hz) in W rec show excellent stability.
研究领域:
材料科学
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能源工程
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xiangying Li,Haibo Yang,Yanlong Ma,Ying Lin
Dielectric polymer capacitors are widely used in electronic power systems, pulse power systems, and hybrid vehicles due to their excellent charging-discharging rates as well as ultrahigh power density. However, a grimness challenge is to achieve both high energy storage density (Ue) and high efficiency (η). Herein, we report a three-layer structured polymer-based nanocomposite, in which the outer insulation-layers are composed of boron nitride nanosheets (BNNSs) with polyetherimide (PEI), while Ba0.6Sr0.4TiO3 nanofibers (BSTNFs) with PEI as the inner polarization-layer. The three-layer structure effectively combines the advantages of each functional layer, offering high interfacial polarization and high breakdown strength, and consequently leading to an enhanced Ue of the nanocomposites. Consequently, an ultrahigh Ue of 20.96 J/cm3 accompanied with an outstanding η of 95.74% can be obtained in the optimized composition with the inner layer containing 5 vol% BSTNFs, which is 4.78 times as high as that of the pure PEI film (4.38 J/cm3). Notably, the nanocomposite obtains a satisfactory high-temperature performance even under harsh environments (Ue = 10.84 J/cm3, η > 80%, 150 °C), thereby manifesting a substantial application potential. Therefore, this study offers a novel and promising route to high-performance polymer-based dielectrics.
研究领域:
材料科学
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电气工程
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DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Xuexia Li,Thumawadee Wongwirat,Linqi Li,Yuan Xi,Junji Wei,Lei Zhu
A new dipolar glass polymer, sulfonylated poly(ether ether ketone) (PPLM–PEEK-SO2), was designed and synthesized using the postfunctionalization of o-cresolphthalein units. The methyl sulfonyl group, as a side chain with a large dipole moment of 4.25 D, could well utilize the free volume (FV) provided by the rigid skeleton structure. This enhanced orientational polarization resulted in a high dielectric constant of 4.55 and a low loss of 0.0057 at 25 °C and 100 Hz for PPLM–PEEK-SO2. In addition, PPLM–PEEK exhibited excellent discharge energy density, and the discharge efficiency (η) maintained about 97% at room temperature when the electric field increased from 50 to 500 MV/m. And even at 150 °C and 300 MV/m, it can also be as high as 95.42%, which is suitable for high-temperature energy storage. Moreover, PPLM–PEEK-SO2 exhibited a higher energy storage density, such as 3.8 J/cm3 at 100 °C and 450 MV/m.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Haiyan Wang,Renzhong Xue,Xiang Zhu,Mengxin Ning,Haidan Liu
Improving energy storage density and efficiency of antiferroelectric materials could promote their use within energy storage field, particularly in the context of pulsed power sources. In this study, Sm and Hf co-doped silver niobate (AgNbO 3 ; AN) ceramics were prepared using traditional solid-state method. Comprehensive analysis of crystal structure, microstructure, defects, absorbance, and energy storage performance of the material was conducted. Results reveal that co-doping increased the concentration of cation vacancies and band gap, decreased the M 1 –M 2 and M 2 –M 3 phase transition temperatures, and enhanced the antiferroelectric phase stability and energy storage performance. The (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited energy storage density of 5.35 J/cm 3 and energy storage efficiency of 73% at electric field ( E ) of 295 kV/cm, demonstrating significant improvement. The (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited excellent thermal stability (<5% in the range of 25 °C-125 °C) and frequency stability (<3% in the range of 1–100 Hz under E = 290 kV/cm). Additionally, the (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited ultrahigh discharge speed (∼18 μs) and high discharge energy density (4.9 J/cm 3 ). These advantages make these ceramics promising materials for energy storage applications.
研究领域:
材料科学
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能源存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
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IF 7.9
Chenxi Liu,Zhonghua Dai,Yuanyuan Zheng,Xujun Li,Muhammad Nasir Rafiq,Shinya Tsukada,Yu Cong,Tomoaki Karaki,Shun Zhou
Potassium niobate sodium-based ceramics with unique optical and electrical properties are used to develop transparent energy storage capacitors. The (1- x )K 0.5 Na 0.5 NbO 3 - x Bi(Sr 0.5 Hf 0.5 )O 3 (KNN-BSH, x = 0, 0.025, 0.05, 0.075, 0.1) ceramics are prepared and intensively investigated in this work. The results show that the average grain of KNN-BSH ceramics reaches a minimum of 0.64 μm, owing to the effective suppression of grain growth by (Sr 0.5 Hf 0.5 ) 3+ doping at the B-site. The KNN-BSH ceramics exhibit pseudo-cubic phases and are excellent relaxation ferroelectric ceramics. In particular, the total energy storage density ( W total ) of 0.95KNN-0.05BSH ceramic is 3.94 J/cm 3 , the recoverable energy storage density ( W rec ) is 2.85 J/cm 3 , and the discharge time ( t 0.9 ) is 0.92 μs, which is optimal for comprehensive performance. Besides, the band gap of 0.975KNN-0.025BSH reaches a maximum value of 3.13 eV with a high transmittance of about 57.3 % at a wavelength of 950 nm. The results indicate that KNN-BSH ceramics can be an alternative for transparent energy storage materials.
研究领域:
材料科学
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电介质物理学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yuqi Liu,Chengyuan Wang,Jiufeng Dong,Yujuan Niu,Zizhao Pan,Liang Sun,Yani Lu,Xuyang Wang,Li Li,Jiangyu Li,Jiannong Wang,Hong Wang
Nanofillers and polymer matrices are utilized to construct nanocomposites, offering a promising approach to enhance energy storage performance in harsh conditions. This strategy relies on structural design to introduce deep charge traps that regulate carrier transport within the material. However, comprehensive studies combining theoretical and experimental methods to elucidate how trap introduction by nanofillers improves capacitive performance remain limited. Here, we in-situ synthesized alumina (AO) nanosheets via a hydrothermal method and fabricated uniformly dispersed nanocomposites with polyimide (PI) as the matrix. Energy band theory revealed that AO nanosheets introduced deep charge traps at the PI-AO interface, substantially reducing leakage current density. High-resolution Kelvin probe force microscopy (KPFM) experimentally confirmed the presence of interfacial deep charge traps at the nanofiller/polymer interface. Thermally stimulated discharge current (TSDC) was further measured to characterize variations in trap depth and density among different materials. At 150 °C, the optimized nanocomposite achieved a high energy storage density of 2.72 J cm −3 with a charge–discharge efficiency exceeding 90 %, corresponding to approximately 448 % of the performance of pristine PI. This work bridges critical gaps between experimental observations and theoretical mechanisms, clarifying the role of interfacial charge traps in nanocomposite performance.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Bo Peng,Pengbo Wang,Hang Luo,Yang Xiao,Haoran Xie,Guanghu He,Deng Hu,Dou Zhang
The commercial high-temperature dielectric aromatic polyetherimide (PEI), due to the electron conjugation between aromatic rings in molecular chains, causing an exponential increase in conduction loss, which results in a sharp decline in capacitive performance at elevated temperatures and electric fields. Here, an all-organic dielectric based on molecular isolation strategy is proposed, attempting to suppress the conduction loss and improve the high-temperature capacitive performance of PEI by introducing the cyclodextrin (CD) with large ring-like structure and amounts of hydroxyl groups. The addition of CD expands the interchain spacing of PEI, interrupts the electron conjugation of aromatic rings and hinders the formation of electronic channels between molecular chains. As results, CD/PEI composites show enhanced breakdown strength ( E b ) (increased by 24 %) and suppressed leakage current (reduced by 220 %), with much lower energy loss than that of pure PEI. The 1.5 wt% CD/PEI all-organic composite achieves an energy storage density ( U e ) of 5.12 J cm −3 with charge-discharge efficiencies ( η ) > 90 %. It achieves stable cyclability over 100,000 cycles at 150 °C compared with 4217 cycles of pure PEI. This work offers an innovative strategy for the fabrication of all-organic composite dielectrics with high U e and η simultaneously at harsh environment.
研究领域:
材料科学
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电气工程
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
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IF 8.7
Yanan Shang,Yu Feng,Changhai Zhang,Tiandong Zhang,Qingguo Chi
Flexible dielectric materials have given rise to extensive attention in power electronics and other fields because of their outstanding superiorities such as high-power density. However, how to effectively heighten the energy storage density of the dielectric is a long-term challenge. The single fillers introduced tends to focus on enhancing the insulating or polarized properties of the composite, which limits further improvements in energy storage density. In this paper, through the co-doped of insulating boron nitride (BNNS) and polarized titanium dioxide (TiO 2 ) two-dimensional nanosheets, the polarization strength is enhanced, and the breakdown strength can maintain at a high level, then an excellent energy storage density of 20.08J/cm 3 and charge–discharge efficiency of 73 % are obtained. Meanwhile, the co-doped composite has great stability and an ultrahigh power density close to 5 times of BOPP. This study offers a guidance for the reasonable design of P(VDF-TrFE-CFE) polymer composite with excellent electric storage properties.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 102
·期 10
·6107-6114
·
IF 3.094
Ying Zhang,Yong Li,Xihong Hao,Haitao Jiang,Jiwei Zhai
Flexible antiferroelectric ( AFE ) Pb 0.94 La 0.04 Zr 0.97 Ti 0.03 O 3 (PLZT) thick-film capacitors were fabricated on nickel foil substrates using sol-gel method. The thick PLZT film shows pure perovskite phase with dense microstructure. The discharge energy-storage properties of the thick PLZT film are directly evaluated by the resistance-inductance-capacitance ( RLC ) circuit. The maximum value of the discharge energy-storage density ( W dis ) is 15.8 J/cm 3 at 1400 kV/cm and 90% of the corresponding energy is released in a short time of about 250 ns. In addition, the W dis and discharge time could be adjusted by the bent radius of the film, which provides a simple and feasible solution for the regulation of the electrical performance. Furthermore, the flexible AFE film exhibits good mechanical properties under cycling tests with bending radii down to 2.5 mm and 1500 rounds. This work shows a critical significance in fabricating flexible AFE capacitors for application in modern electronics and electrical power systems.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Materials Today Energy
·
2022
·
IF 9.257
Xianglei Liu,Changjian Yuan,Hangbin Zheng,Chao Song,Cheng Tian,Ke Gao,Nan Sun,Zhixing Jiang,Yimin Xuan,Yulong Ding
Calcium carbonate (CaCO 3 ) pellets are suitable for scalable solar thermochemical energy storage but suffer from low solar absorptance, poor stability, and slow reaction kinetics, which lead to low solar energy storage efficiency. Here, for the first time, we successfully achieve fast and efficient solar thermochemical energy storage via synergistically employing Al, Mn, and Fe stabilizers for improving both cyclic stability and solar absorptance, and Li 2 CO 3 promoters for accelerating decomposition of CaCO 3 pellets. The average solar absorptance is 1500% higher than that of pure CaCO 3 pellets. After 60 cycles, the energy storage density is still as high as 1671 kJ/kg with a decay rate of only 4.14%, in stark contrast to energy density of 1121 kJ/kg and decay rate of 56.73% for pure CaCO 3 pellets. The average decomposition rate is about twice as fast as that of pure CaCO 3 pellets due to enhanced Ca 2+ diffusion by doped Li 2 CO 3 . Under direct light irradiation, novel CaCO 3 pellets demonstrate high energy storage rate due to both high solar absorptance and fast decomposition rate, while pure CaCO 3 pellets cannot even reach the decomposition temperature. This work opens new opportunities for scalable deployment of direct solar-driven thermochemical energy storage techniques based on Li 2 CO 3 -doped dark CaCO 3 pellets.
研究领域:
材料科学
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能源工程
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化学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）