CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Fukun Niu,Xueqian Li,Zhuqun Shi,Chuanxi Xiong,Quanling Yang
With the continuous development and progress of science and technology, the widespread use of petroleum-based plastics has highlighted serious environmental issues. Scientists are committed to replacing some of the applications of petroleum-based plastics with sustainable natural polymer materials. Chitin, cellulose, and other natural polymers rich in polar groups are suitable for designing and preparing sustainable and low-polluting dielectric energy storage materials. In this study, we selected calcium copper titanate (CCTO) with ultra-high dielectric constant as a dielectric enhancement filler and explored the effects of different morphological structure fillers on the dielectric energy storage properties of composite films. CCTO nanoparticles and CCTO nanofibers were mixed with chitin solution and cast into chitin/CCTO composite films. The one-dimensional CCTO nanofibers showed a more significant improvement in the comprehensive performance of the composite films. When the addition amount was 3 wt%, the breakdown field strength of the composite film was 410 MV m −1 , the charge-discharge efficiency was 78.2 %, and the energy storage density reached 6.14 J cm −3 , showing an obvious improvement compared with the pure chitin film and chitin/CCTO nanoparticles composite films. It is possible that the high aspect ratio structure fillers can enhance the inhibition of electric branches and provide better compatibility with the matrix.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2024
·Vol. 26
·期 13
·2400440
·
IF 3.4
Pengpeng Xu,Peilin Ma,Junyi Yu,Kelun Jiang,Shanming Ke,Haitao Huang,Shuhui Yu,Yangbo Zhou,Suibin Luo
Dielectric films with high discharged energy density are highly desired in electrical and electronic systems. Adding inorganic nanoparticles, especially for 1D inorganic fillers, in polymer films is recognized as one of the most effective methods to improve the electric breakdown strength, which is a key parameter of energy storage. However, 1D inorganic fillers added into thin films will undoubtedly introduce many defects and reduce the electric insulation performance. Herein, homogeneous epoxy fiber derived all-polymer films are fabricated by electrospinning, laminating, and curing in sequence. The existing 1D structure of the epoxy films significantly enhance the dielectric constant and electric breakdown strength, resulting in a very high enhancement of 2.7 times the discharged energy storage density at 25 °C, up to 9.6 J cm −3 . Assisted by the simulation analysis, the enhanced dipole polarization and reduced current density are found to be the main reasons for the improved energy storage performances. Preparing all-polymer films with fiber structure has proved to be an effective way to find advanced energy storage dielectric films.
研究领域:
材料科学
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电气工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Xinyu Zeng,Yang Li,Jia Dong,Jingli Li,Zhaoyu Yang,Chunlin Song,Gang Liu,Yan Yan
In the current study, a series of CeO 2 -doped ( x = 0.01, 0.015, 0.02, 0.025 mol) ceramic samples were prepared, and the valence of Ce in the perovskite was analyzed in detail, revealing the polarization contribution and effect mechanism of the doped Ce element in the 0.65BaTiO 3 –0.35Sr 0.7 Bi 0.2 TiO 3 ceramic. The phase structure and electrical stored energy performance of the resulting ceramics were also characterized. It was found that adding an appropriate amount of CeO 2 to BaTiO 3 was helpful for improving the relaxor behavior, promoting electric storage, and releasing ceramic materials. Particularly, the electric breakdown strength of the 0.02Ce-doped specimen reached 330 kV/cm, and the corresponding density and efficiency were 2.57 J/cm 3 and 81.30%, respectively. In addition, doping with Ce caused the ceramics to exhibit good stability at frequencies of 1–300 Hz and over a temperature range of 30–150 °C. A high current density ( C D ) and power density ( P D ) were obtained in charge–discharge tests.
研究领域:
材料科学
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能源存储
·
电子材料
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 5
·2963-2971
·
IF 3.9
Nan Weng,Ji Zhang,Jiajia Wang,Tianze Pan,Jing Wang,Yaojin Wang
Ceramic capacitors with high electrostatic energy storage performances have captured much research interest in latest years. Sodium bismuth titanate (Na 0.5 Bi 0.5 TiO 3 )-based ferroelectric ceramics show great potential due to their environment-friendly composition, high polarization, and excellent relaxor properties. However, the nonergodic relaxor state of Na 0.5 Bi 0.5 TiO 3 -based ceramics hampers the decrement of remanent polarization, leading to poor energy storage performance. Herein, the (1 − x )Na 0.5 Bi 0.5 TiO 3 – x La(Ni 2/3 Ta 1/3 )O 3 ceramics were designed to generate the transformation between nonergodic and ergodic relaxor state. As a result, the ceramics exhibit improved dielectric relaxation, slim polarization–electric field loops, and flattened current–electric field curves due to highly dynamic polar nanoregions. Particularly, the 0.85Na 0.5 Bi 0.5 TiO 3 –0.15La(Ni 2/3 Ta 1/3 )O 3 ceramics show large breakdown electric field E b (345 kV/cm), high recoverable energy density W rec (3.6 J/cm 3 ), and efficiency η (80.6%), revealing potential applications in electrostatic energy storage.
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
COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Zihao Guo,Zhihao Sun,Peng Wang,Jingyu Bi,Guangshen Li,Jianshu Wang,Ying Sha,Zhicheng Shi,Lei Qian
In this work, a negatively charged SiO 2 inner shell and a positively charged polyethylene imine (PEI) outer shell have coated onto a Ba 0.5 Sr 0.5 TiO 3 (BST) nanoparticle to fabricate core-double shell structure with a built-in electric field. This innovative structure is subsequently incorporated into poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) and polymethyl methacrylate (PMMA) hybrid organic matrix to prepare composite films with enhanced dielectric energy storage properties. The SiO 2 inner shell effectively mitigates the uneven electric field distribution caused by dielectric constant mismatch, and the PEI organic outer shell is designed to enhance the interfacial compatibility. Additionally, the dual shell structure exhibits a significant synergistic effect resulting from the built-in electric field, which successfully impedes the acceleration of internal charges and growth of electrical trees. COMSOL Multiphysics simulation results confirm that the core-double shell structure effectively alleviates the electric field distortion, leading to improved breakdown strength. Notably, the composite film demonstrates an energy storage density of 12.72 J/cm 3 under an electric field of 498.96 kV/mm with a low loading of 0.5 wt%, achieving 1.98 times that of the pure matrix. These findings provide valuable insights and directions for advanced polymer-based composite dielectric films with high energy storage densities.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2023
·
IF 4.7
Yuzhe Lin,Ruifeng Wan,Peng Zheng,Zhihao Li,Yikai Wang,Qiaolan Fan,Liang Zheng,Yang Zhang,Wangfeng Bai
The rapid growth of the electronics industry and increasing concern about environmental issues present great demands for lead-free dielectric ceramic capacitors with remarkable energy storage performances (ESPs). Lead-free perovskite ferroelectric and antiferroelectric systems are deemed as the most promising candidates, and homostructure linear dielectric doping is a widely used strategy to boost ESPs. However, the heavy doping of a linear dielectric usually leads to a great reduction of the polarization, for which an extremely high electric field is needed to achieve a large energy storage density (Wrec). In this study, a Bi0.5N0.5TiO3-SrTiO3 (BNT-ST)-based relaxor ferroelectric system was designed via a heterostructure doping strategy in which a tetragonal tungsten bronze ferroelectric phase Sr2NaNb5O15 (SNN) was introduced into the perovskite matrix. It was found that a small SNN heterostructure doping amount could effectively enhance the relaxor behavior of the BNT-ST ceramic and depress the remnant polarization, while keeping a large maximum polarization. Moreover, the introduction of the tungsten bronze ferroelectric phase obviously decreased the grain size (G) of the BNT-ST ceramic, giving rise to an improved electric breakdown strength (Eb). Finally, a remarkable Wrec of 5.22 J/cm3 and excellent efficiency (η) of 93.87% were attained under a low electric field of 340 kV/cm, which make the Bi0.5N0.5TiO3-SrTiO3-xSr2NaNb5O15 (BNT-ST-xSNN) ceramic system a promising choice for the dielectric energy storage field. These results demonstrate that the heterostructure doping strategy might be a feasible method to develop lead-free perovskite dielectric ceramics with remarkable ESPs under low electric fields.
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
ACTA MATERIALIA
·
2025
·
IF 9.3
Hao Zhang,Tengfei Hu,He Qi,Huifen Yu,Lisha Li,Jie Wu,Liang Chen,Jun Chen
Tungsten bronze, the second largest ferroelectric family after perovskite, has been extensively studied in the field of dielectric energy storage. However, tungsten bronze ceramics, especially the filled type, face a severe challenge of reaching high energy density and high efficiency, making it difficult to match the energy storage performance of perovskites. In this work, we propose high-entropy strategy in filled type tungsten bronze ceramics to meticulously engineer dipole glass, manifesting as completely different polarization magnitudes and angles between adjacent dipoles. Combining the apparent enhancement of breakdown strength and the significant reduction of polarization hysteresis loss driven by highly disordered dipole glass, an impressive recoverable energy density of 8.9 J/cm 3 with an ultrahigh efficiency of 91 % can be achieved in the high-entropy tetragonal filled tungsten bronze ceramics, endowing tungsten bronzes with considerable energy storage competitiveness compared to perovskites. This work provides an effective avenue to develop and expand new high-performance energy storage materials.
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 29
·15217-15226
·
IF 8.867
Zhongbin Pan,Jiwei Zhai,Bo Shen
Polymer nanocomposites with high energy density have potential applications in advanced electronics and electric power systems. The inevitable electrical mismatch between nanofillers and the polymer matrix could compromise the energy storage capability and dielectric properties of the polymer nanocomposites. Herein, novel core–double-shell structured BaTiO3@TiO2@Al2O3 nanofibers (BT@TO@AO NFs) were prepared via a one step method, and were incorporated into poly(vinylidene fluoride) (PVDF). The novel design of gradually varying the multilayer hierarchical interface was advantageous to alleviating the local electric field and electric current density intensification in the filler/polymer system. As compared with the nanocomposites loaded with BT NFs and BT@TO NFs, the nanocomposites filled with BT@TO@AO NFs exhibit much decreased dielectric loss, enhanced breakdown strength, and suppressed leakage current densities. Simulations were carried out to verify that the new core–double-shell structure significantly enhances the breakdown strength and energy density. As a result, the nanocomposite films loaded with 3.6 vol% BT@TO@AO NFs show a maximum energy storage density (Ue) of 14.84 J cm−3 at 450 MV m−1, which is about twelve times greater than that of biaxially oriented polypropylene (BOPP) (≈1.2 J cm−3 at 640 MV m−1). Moreover, the nanocomposite exhibits a superior power density of 4.7 MW cm−3 and an ultra-fast discharge speed of 0.37 μs. This research opens up a convenient and effective way for designing high-performance dielectric polymer nanocomposites.
研究领域:
材料科学
·
电气工程
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DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 21
·2313285
·
IF 27.4
Liang Chen,Tengfei Hu,Xiaoming Shi,Huifen Yu,Hao Zhang,Jie Wu,Zhengqian Fu,He Qi,Jun Chen
Taking into account the need for energy conservation, achieving near-zero energy loss, namely ultrahigh efficiency ( η ), in energy storage capacitors with large recoverable energy storage density ( W rec ) plays an important role in applications, which is one of the major challenges in dielectric energy storage field. Here, guided by phase-field simulation, inhomogeneous polarization configuration with multiple symmetries and polarization magnitudes is controlled through aliovalent strongly polar double ion design to establish a strongly disordered state. A record-high η of ≈97.4% is realized in lead-free relaxors with a large W rec of ≈8.6 J cm −3 , which also give a giant W rec of ≈11.6 J cm −3 with an ultrahigh η of ≈96.1% through high-energy ball milling, showing a breakthrough progress in ceramic capacitors with a maximum figure of merit of 330. This work demonstrates that controlling inhomogeneous polarization configuration is an effective avenue to develop new high-performance near-zero energy loss energy storage capacitors.
研究领域:
材料科学
·
介电储能
·
陶瓷电容器
·
铁电材料
·
能量守恒
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xin Wang,Fu-Lin Gao,Hao-Yu Zhao,Lin Tian,Shumiao Li,Shuaiyuan Wang,Zhong-Zhen Yu,Xiaofeng Li
The drive toward miniaturization, integration, and extreme environmental adaptability in electronic devices imposes stringent demands on the energy density and thermal conductivity of polymer dielectric materials. Here, the long-standing challenge of simultaneously improving dielectric constant and thermal conductivity through a “heterogeneous interface enhancement-dual filler synergy” strategy is addressed. Hydroxylated boron nitride nanosheets (BNNS) and reduced graphene oxide (rGO) are codispersed within a polyimide (PI) matrix, forming continuous networks that facilitate efficient dielectric and thermal transport. Robust hydrogen bonding among hydroxylated BNNS, rGO, and PI establishes stable interfaces, while the permittivity mismatch between BNNS and rGO induces interfacial polarization, yielding a dielectric constant of 12.6 at 1 kHz. The interpenetrating BNNS/rGO network facilitates efficient phonon transport, resulting in a thermal conductivity of 13.6 W (m K) −1 . Furthermore, the large lateral size of ultrathin BNNS suppresses breakdown channel propagation, maintaining a high breakdown strength of 440 kV mm −1 . Notably, the composite exhibits a discharge energy density of 4.6 J cm − 3 with charge–discharge efficiency over 90% at 150 °C, surpassing most advanced polymer dielectrics. This work overcomes the trade-off between dielectric and thermal properties of polymer-inorganic nanocomposites, offering a compelling strategy for developing high-performance dielectric films for advanced electronics.
研究领域:
材料科学
·
高分子科学
·
电气工程
·
纳米技术
·
热工学
✓ 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）