ACS Sustainable Chemistry & Engineering
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2021
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IF 8.198
Changhai Zhang,Tongqin Zhang,Mengjia Feng,Yang Cui,Tiandong Zhang,Yongquan Zhang,Yu Feng,Yue Zhang,Qingguo Chi,Xianli Liu
The increasing energy problem and the demand of environmental protection raise higher requirements for the development of clean energy. Dielectric capacitors have attracted lots of attention as a supporting facility of energy storage and conversion for clean energy, but their further development is limited by the low energy storage performance. In this paper, all-organic composite dielectrics were reported, with a poly(methyl methacrylate) (PMMA)/poly(vinylidene fluoride) (PVDF) composite dielectric with different mixing ratios as the matrix and the organic molecular semiconductor with high electron affinity [6,6]-phenyl C61 butyrate acid methyl ester (abbreviated as PCBM) as fillers. The related test results show that with the increase in the doping contents of PCBM, the energy storage density increases obviously. When the doping content of PCBM is 0.9 wt %, the PMMA/PVDF-based organic composite dielectric possesses an optimal breakdown field of 685.67 kV mm–1, accompanying excellent energy storage performances (Ue, ∼21.89 J cm–3; η, ∼70.34%). The PVDF blended with PMMA strategy not only restrains the ferroelectric polarization loss of PVDF but also improves the breakdown strength of the polymer. More importantly, the polarization and breakdown strength of the composites can be synergistically enhanced by filling with PCBM fillers.
研究领域:
材料科学
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高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jiajun Ma,Donghai Zhang,Fei Ying,Xiongjie Li,Ling Li,Shun Guo,Yu Huan,Ji Zhang,Jing Wang,Shan-Tao Zhang
Dielectric capacitors have attracted growing attention because of their important applications in advanced high power and/or pulsed power electronic devices. Nevertheless, the synergistic enhancement of recoverable energy storage density (Wrec > 10 J/cm3) and efficiency (η > 80%) is still a great challenge for lead-free dielectric bulk ceramics. Herein, by introducing complex perovskite compound (Bi0.9Na0.1)(Fe0.8Ti0.2)O3 with a smaller tolerance factor into an NaNbO3 matrix (NN-BNFT), we have achieved and explored stable relaxor antiferroelectric ceramics with enhanced relaxor behavior. Of particular importance is the composition of 0.88NN-0.12BNFT, which exhibits a large electric breakdown strength Eb of 87.3 kV/mm, an ultrahigh Wrec of 12.7 J/cm3, and a high efficiency η of 82.5%, as well as excellent thermal reliability and an ultrafast discharge speed, resulting from the dense microstructure, the moderate dielectric constant, the reduced grain size, the dielectric loss, and the sample thickness. The outstanding energy storage properties of NN-BNFT display great promise in advanced dielectric capacitors for energy storage applications.
研究领域:
材料科学
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电子工程
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 26
·20981-20991
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IF 2.779
Yan Gui-wei,Liu Qing-qing,Fang Bi-jun,Chen Zhi-hui
Mg doped (Ba 0.98 Li 0.02 )TiO 3 energy storage ceramics with antiferroelectric-like double hysteresis loops were prepared using solid-state reaction method. XRD patterns indicated that tetragonal phase structure of the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic was destroyed and the orthorhombic phase structure appeared with Mg doping. The ratio of orthorhombic/tetragonal phase increased with Mg content increasing, and the value of polarization was in direct proportion to the ratio of orthorhombic/tetragonal phase. The breakdown strength of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics was improved from 60.97 kV/cm at x = 0 to 103.66 kV/cm at x = 0.04. The optimum energy storage properties of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics were obtained with energy storage density of 0.76 J/cm 3 at 102.5 kV/cm when x = 0.04, which is nearly 2.3 times larger than the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic, and the energy storage efficiency was improved from 64 to 87%.
研究领域:
材料科学
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物理学
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 16
·1-9
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IF 2.8
Xie Yanjiang,Hao Hua,Cao Minghe,Yao Zhonghua,Liu Hanxing
In this study, we proposed a novel method of adding large amount of excessive Ti in Bi 0.5 Na 0.5 TiO 3 -based thin film to improve its energy storage density. Ti-excess 0.94Bi 0.5 Na 0.5 Ti x O 3 -0.06BaTi x O 3 (BNBT x , x = 1.00, 1.05, 1.10, 1.15) thin films were successfully prepared by sol–gel method. It was found that the phase structure of the thin films kept unchanged with the increase of Ti content, and substantial improvements in microstructure and breakdown strength could be obtained by the addition of an excess of Ti in BNBT x thin films, as well as reduced leakage. As a result, improved energy storage density of 34 J/cm 3 and energy storage efficiency of 48% were achieved simultaneously in BNBT 1.15 thin film at a medium electric field of 2400 kV/cm. Furthermore, Ti-excess thin films showed high-dielectric constant with good temperature stability from 25 to 200 °C. These results demonstrate that Ti-excess BNBT x thin film is a potential system for energy storage materials.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2018
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IF 3.779
Chunli Diao,Hanxing Liu,Haiwu Zheng,Zhonghua Yao,Javed Iqbal,Minghe Cao,Hua Hao
Electrostatic dielectric energy storage capacitors have attracted much attention recently for their fast charging-discharging speed and high power density. Trilayered Ba 0.4 Sr 0.6 TiO 3 /BaTiO 3 /Ba 0.4 Sr 0.6 TiO 3 (BST/BT/BST) thin films were prepared by spin-coating technique. The sandwich-structured thin films showed high dielectric constant (ε r = 952) and low dielectric loss (tanδ = 0.034) at room temperature (10 kHz). Moreover, the dielectric constant of the thin films demonstrated good frequency stability within the measured frequency range and broad capacitance variation (20 °C–160 °C, ΔC/C 25°C <±10%). The electric-field dependence of dielectric response was investigated and the dielectric tunability was 13.3% at 100 kV/cm. Compared with pure BT thin films, the heterostructure exhibited enhanced electric breakdown strength and energy storage density. The recoverable energy storage density and efficiency of BST/BT/BST thin films were 14.69 J/cm 3 and 33.9% at 1.44 MV/cm, respectively. The results indicated that BST/BT/BST heterostructure films would be an alternative way to improve the energy storage density of dielectrics for applications.
研究领域:
材料科学
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电子工程
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高影响因子
RARE METALS
·
2023
·Vol. 42
·期 4
·1261-1273
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IF 8.8
Li Yang,Tang Ming-Yang,Zhang Zhong-Gang,Li Qi,Li Jing-Lei,Xu Zhuo,Liu Gang,Li Fei
BaTiO 3 ceramics are difficult to withstand high electric fields, so the energy storage density is relatively low, inhabiting their applications for miniaturized and lightweight power electronic devices. To address this issue, we added Sr 0.7 Bi 0.2 TiO 3 (SBT) into BaTiO 3 (BT) to destroy the long-range ferroelectric domains. Ca 2+ was introduced into BT-SBT in the form of CaTiO 3 (CT), which has the effect of inhibiting the movement of A-site defects to reduce dielectric loss and refining the grains to increase the breakdown field strength. In addition, we have increased the density and grain uniformity of ceramics by repeated rolling of the green samples through the viscous polymer processing (VPP), to further increase the breakdown electric field. The BT-SBT-CT ceramics exhibit the high recoverable energy storage density of 4.0 J·cm −3 under electric field of 480 kV·cm −1 . Its recoverable energy storage density varies by less than 8% in the temperature range of 30–150 °C, indicating good temperature stability of the energy storage performance. In this work, the energy storage performance of barium titanate-based ceramics was greatly improved by transforming ferroelectrics into relaxor ferroelectrics and VPP method, which can bring new inspiration for the research of energy storage ceramics. Graphical abstract
研究领域:
材料科学
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电子工程
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yuting Wan,Penghao Hu,Binzhou Sun,Shuyi Shen,Hang Luo,Shujun Zhang,Dou Zhang,Ce-Wen Nan,Yang Shen
Dielectric polymers must exhibit low conductivity and thermal stability to realize high-performance capacitive energy storage under high-temperature conditions. However, conventional heat-resistant polymers suffer from deteriorated insulation at elevated temperatures, limiting their practical applications. Here, it is proposed and demonstrated that a self-driven thermal crosslinking approach, without crosslinker, is highly efficient in breaking the adverse correlation between the insulation and thermal stability of dielectric polymers at high temperatures. By decarboxylation-driven crosslinking within polyetherimide (PEI) molecular chains, a robust network is formed, effectively suppressing charge carrier migration. The synergistic combination of decarboxylation-induced structural densification and residual carboxyl-enabled deep charge trapping synergistically reduces the electrical conductivity of the modified PEI by 3 orders of magnitude relative to conventional polyimide (Kapton PI) at 250 °C. Consequently, a significantly enhanced discharge energy density of 3.7 J cm −3 with a charge-discharge efficiency of 91% is achieved at 250 °C, outperforming existing pure polymer dielectrics. Furthermore, the scalability of this approach is demonstrated by producing a 100-meter-long modified film through an industrial-scale roll-to-roll solution-casting process, highlighting its compatibility with mass production. This strategy also proves to be universal to other dielectric polymers to achieve high insulation and heat resistance at elevated temperatures.
研究领域:
材料科学
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能源工程
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高影响因子
ADVANCED MATERIALS
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2025
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IF 26.8
Nengneng Luo,Xiafeng He,Chao Xu,Zhengu Chen,Kun Zhao,Zhenyong Cen,Xiyong Chen,Dongliang Shan,Yunya Liu,Zhaobo Liu,Han Xie,Ye Zhu,Houbing Huang,Jing-Feng Li,Shujun Zhang
Dielectric capacitors possessing high power density and ultrashort discharge time are valuable for high-power energy storage applications. However, achieving high energy storage density remains challenging due to the limited breakdown strength of dielectric ceramics. In this study, inspired by the layered architecture of natural nacre and with the guidance of phase-field simulations, a strategy of constructing a nacre-like layered structure is proposed to improve the breakdown strength and energy storage density of the ceramics. This unique structure is formed by controlling the morphology and ordering of high-voltage-resistant fillers in a ceramic matrix. The (Pb 0.98 La 0.02 )(Zr 0.7 Sn 0.3 ) 0.995 O 3 -Al 2 O 3 antiferroelectric composite ceramics, containing 5vol% parallel-aligned Al 2 O 3 plates, demonstrate a remarkable enhancement in breakdown strength from 390 to 570 kV cm −1 . Of particular importance is that an ultrahigh recoverable energy storage density of up to 13.2 J cm −3 is achieved, representing a 50% enhancement compared to the pure ceramic (8.7 J cm −3 ). The parallel-aligned Al 2 O 3 plates are strongly bound together with the ceramic matrix, effectively blocking charge migration and controlling the breakdown path, thus greatly enhancing the voltage endurance of the composite ceramics. This work provides an innovative approach to designing high-performance composite ceramics for next-generation energy storage applications.
研究领域:
材料科学
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PubMed
高影响因子
Journal of Energy Storage
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2022
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IF 8.907
Huan Liu,Ziyue Wang,Jiyang Xie,Changjin Guo,Wanbiao Hu
Poly(vinylidene fluoride) (PVDF) is a basic polymer that has been extensively used in flexible electronics, with the properties differing in terms of multiple phases, e.g. α , β , and γ . As generally involved, processing induced phase variations have not yet been identified clearly, which furthermore often embarrasses the attributions and contributions in the properties and mechanisms. To this end, the phase compositions and evolutions in pure PVDF films are systematically tuned and explored by annealing and quenching processing. The annealed PVDF exhibits a predominant γ -phase, while α -phase is dominated in quenched PVDF. Upon the induced different phase compositions, the optimally processed PVDF films similarly exhibit an ultrahigh dielectric energy storage density e.g. 19.66 J cm −3 for annealed and 21.73 J cm −3 for quenched PVDF film, respectively, but only the former maintains a simultaneously high discharge efficiency of 65 %. With showing excellent energy storage performance, the processed especially the annealed PVDF film could compare to many existing high-performance dielectric energy storage systems . This work thus not only uncovers the phase evolutions as well as their impacts on the properties in PVDF system, but also demonstrates firstly a high energy storage performance in pure PVDF.
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
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Yifeng Xia,Hua Hao,Cheng Tao,Minghe Cao,Zhonghua Yao,Hanxing Liu
Dielectric capacitors are essential in advanced electronics and power systems due to their high power density and fast charge–discharge rates. However, their application is limited by their low energy storage density and efficiency. Aurivillius-phase ferroelectrics have shown promise as energy storage materials, but their low polarization and significant hysteresis remain critical challenges. In this study, we present a simple and cost-effective defect-engineering strategy to enhance the energy storage performance of SrBi5Ti4FeO18 thin film through Mn doping. Mn incorporation suppresses oxygen vacancy formation and induces tensile chemical stress in the lattice, which simultaneously enhances maximum polarization and reduces the hysteresis. Additionally, the reduction in oxygen vacancies promotes grain refinement, reduces leakage current, and significantly enhances the breakdown strength. The optimized SrBi5Ti3.91Mn0.09FeO18 thin film achieves an ultrahigh energy storage density of 105 J/cm3 with improved efficiency of 70% at 3569 kV/cm. Moreover, it demonstrates good frequency stability (100 Hz to 10 kHz), thermal stability (20–160 °C), and fatigue endurance over 105 cycles. This work provides a feasible method for developing advanced dielectric capacitors with high energy storage performance by the rational design and precise control of defects.
研究领域:
材料科学
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电子工程
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PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 104
·期 8
·4119-4130
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IF 3.784
Yu Huang,Liang Shu,Suwei Zhang,Zhen Zhou,Yue-Yu-Shan Cheng,Biaolin Peng,Lisha Liu,Yuanyuan Zhang,Xuping Wang,Jing-Feng Li
With the development of advanced electrical and electronic devices and the requirement of environmental protection, lead-free dielectric capacitors with excellent energy storage performance have aroused great attention. However, it is a great challenge to achieve both large energy storage density and high efficiency simultaneously in dielectric capacitors. This work investigates the energy storage performance of sol-gel-processed (K,Na)NbO 3 -based lead-free ferroelectric films on silicon substrates with compositions of 0.95(K 0.49 Na 0.49 Li 0.02 )(Nb 0.8 Ta 0.2 )O 3 -0.05CaZrO 3 - x mol% Mn (KNN-LT-CZ5- x mol% Mn). The appropriate amount of Mn-doping facilitates the coexistence of orthorhombic and tetragonal phases, suppresses the leakage current, and considerably enhances the breakdown strengths of KNN-LT-CZ5 films. Consequently, large recoverable energy storage density up to 64.6 J cm −3 with a high efficiency of 84.6% under an electric field of 3080 kV cm −1 are achieved in KNN-LT-CZ5-5 mol% Mn film. This, to the best of our knowledge, is superior to the majority of both the lead-based and lead-free films on silicon substrates and thus demonstrates great potentials of (K,Na)NbO 3 -based lead-free films as dielectric energy storage materials.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Changshuai Shu,Jiachen Xi,Chongyang Li,Wangfeng Bai,Peng Zheng,Peng Li,Jiwei Zhai
Constructing relaxor ferroelectrics (RFEs) in dielectrics is an efficient approach to break the so-called inverted relations between recoverable energy storage density ( W rec ) and efficiency ( η ). However, in view of the requirement for energy conservation, the major challenge of realizing near-zero energy consumption (ultrahigh η ) accompanied with high W rec still remains in the field of dielectric energy storage. Here, we designed a linear-like RFE with directly induced short-range local polar nanoregions via incorporating the ferroelectric into linear dielectric to realize high-performance capacitive storage, especially near-zero energy loss. Benefiting from linear-like RFE design, the combination of enhanced breakdown strength, ultrasmall dielectric loss, and minimized polarization hysteresis synergistically contributes to a record-high η of ∼97.7 % with a high W rec of 5.87 J/cm 3 and ultrahigh figure of merit of 255, which is ahead of most recently reported state-of-the-art lead-free ceramics. Moreover, based on such linear-like RFE merits, high thermal/frequency stability and cycling durability with high η > 90 % of the designed ceramics expand their applications in harsh condition energy storage systems. This study demonstrates the superiority of linear-like RFE design and provides a referential paradigm towards developing advanced near-zero energy loss energy storage dielectrics.
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材料科学
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高影响因子
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