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Gurnani R, Shukla S, Kamal D, Wu C, Hao J, Kuenneth C, Aklujkar P, Khomane A, Daniels R, Deshmukh AA, Cao Y, Sotzing G, Ramprasad R. AI-assisted discovery of high-temperature dielectrics for energy storage. Nat Commun 2024; 15:6107. [PMID: 39030220 PMCID: PMC11271506 DOI: 10.1038/s41467-024-50413-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 07/01/2024] [Indexed: 07/21/2024] Open
Abstract
Electrostatic capacitors play a crucial role as energy storage devices in modern electrical systems. Energy density, the figure of merit for electrostatic capacitors, is primarily determined by the choice of dielectric material. Most industry-grade polymer dielectrics are flexible polyolefins or rigid aromatics, possessing high energy density or high thermal stability, but not both. Here, we employ artificial intelligence (AI), established polymer chemistry, and molecular engineering to discover a suite of dielectrics in the polynorbornene and polyimide families. Many of the discovered dielectrics exhibit high thermal stability and high energy density over a broad temperature range. One such dielectric displays an energy density of 8.3 J cc-1 at 200 °C, a value 11 × that of any commercially available polymer dielectric at this temperature. We also evaluate pathways to further enhance the polynorbornene and polyimide families, enabling these capacitors to perform well in demanding applications (e.g., aerospace) while being environmentally sustainable. These findings expand the potential applications of electrostatic capacitors within the 85-200 °C temperature range, at which there is presently no good commercial solution. More broadly, this research demonstrates the impact of AI on chemical structure generation and property prediction, highlighting the potential for materials design advancement beyond electrostatic capacitors.
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Affiliation(s)
- Rishi Gurnani
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Matmerize Inc., Atlanta, GA, USA
| | - Stuti Shukla
- Materials Science Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Deepak Kamal
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Chao Wu
- Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
- Department of Electrical Engineering, Tsinghua University, Beijing, China
| | - Jing Hao
- Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Christopher Kuenneth
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Faculty of Engineering Science, University of Bayreuth, Bayreuth, Germany
| | - Pritish Aklujkar
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Ashish Khomane
- Materials Science Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Robert Daniels
- Materials Science Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | | | - Yang Cao
- Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Gregory Sotzing
- Materials Science Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Rampi Ramprasad
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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2
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Sun Z, Bai Y, Jing H, Hu T, Du K, Guo Q, Gao P, Tian Y, Ma C, Liu M, Pu Y. A polarization double-enhancement strategy to achieve super low energy consumption with ultra-high energy storage capacity in BCZT-based relaxor ferroelectrics. MATERIALS HORIZONS 2024; 11:3330-3344. [PMID: 38682657 DOI: 10.1039/d4mh00322e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Due to dielectric capacitors' already-obtained fast charge-discharge speed, research has been focused on improving their Wrec. Increasing the polarization and enhancing the voltage endurance are efficient ways to reach higher Wrec, however simultaneous modification still seems a paradox. For example, in the ferroelectric-to-relaxor ferroelectric (FE-to-RFE) phase transition strategy, which has been widely used in the latest decade, electric breakdown strength (Eb) and energy storage efficiency (η) always increase, while at the same time, the maximum polarization (Pmax) inevitably decreases. The solution to this problem can be obtained from another degree of freedom, like defect engineering. By incorporating Bi(Zn2/3Ta1/3)O3 (BZT) into the Ba0.15Ca0.85Zr0.1Ti0.9O3 (BCZT) lattice to form (1 - x)Ba0.15Ca0.85Zr0.1Ti0.9O3-xBi(Zn2/3Ta1/3)O3 (BCZT-xBZT) solid-solution ceramics, in this work, ultrahigh ferroelectric polarization was achieved in BCZT-0.15BZT, which is caused by the polarization double-enhancement, comprising the contribution of interfacial and dipole polarization. In addition, due to the electron compensation, a Schottky contact formed at the interface between the electrode and the ceramic, which in the meantime, enhanced its Eb. A Wrec of 8.03 J cm-3, which is the highest among the BCZT-based ceramics reported so far, with an extremely low energy consumption, was finally achieved. BCZT-0.15BZT also has relatively good polarization fatigue after long-term use, good energy storage frequency stability and thermal stability, as well as excellent discharge properties.
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Affiliation(s)
- Zixiong Sun
- School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
- Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices, Hubei University, Wuhan 430062, China
- Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science and Technology, Xi'an 710021, China
- MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, Enschede 7500 AE, The Netherlands
| | - Yuhan Bai
- School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
| | - Hongmei Jing
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, P. R. China.
| | - Tianyi Hu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, China
| | - Kang Du
- School of Mathematical and Physical Sciences, Wuhan Textile University, Wuhan, 430200, China
| | - Qing Guo
- School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
| | - Pan Gao
- School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
| | - Ye Tian
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
| | - Chunrui Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, China
| | - Ming Liu
- School of Microelectronics, Xi'an Jiaotong University, Xi'an, China.
| | - Yongping Pu
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
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Li H, Vargo E, Xie Z, Ma L, Pieters PF, Shelton SW, Alivisatos AP, Xu T, Liu Y. Multilaminate Energy Storage Films from Entropy-Driven Self-Assembled Supramolecular Nanocomposites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401954. [PMID: 38669470 DOI: 10.1002/adma.202401954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/24/2024] [Indexed: 04/28/2024]
Abstract
Composite materials comprising polymers and inorganic nanoparticles (NPs) are promising for energy storage applications, though challenges in controlling NP dispersion often result in performance bottlenecks. Realizing nanocomposites with controlled NP locations and distributions within polymer microdomains is highly desirable for improving energy storage capabilities but is a persistent challenge, impeding the in-depth understanding of the structure-performance relationship. In this study, a facile entropy-driven self-assembly approach is employed to fabricate block copolymer-based supramolecular nanocomposite films with highly ordered lamellar structures, which are then used in electrostatic film capacitors. The oriented interfacial barriers and well-distributed inorganic NPs within the self-assembled multilaminate nanocomposites effectively suppress leakage current and mitigate the risk of breakdown, showing superior dielectric strength compared to their disordered counterparts. Consequently, the lamellar nanocomposite films with optimized composition exhibit high energy efficiency (>90% at 650 MV m-1), along with remarkable energy density and power density. Moreover, finite element simulations and statistical modeling have provided theoretical insights into the impact of the lamellar structure on electrical conduction, electric field distribution, and electrical tree propagation. This work marks a significant advancement in the design of organic-inorganic hybrids for energy storage, establishing a well-defined correlation between microstructure and performance.
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Affiliation(s)
- He Li
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Emma Vargo
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | - Zongliang Xie
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Le Ma
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | | | - Steve W Shelton
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Armand Paul Alivisatos
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
- Kavli Energy NanoScience Institute, University of California, Berkeley, CA, 94720, USA
| | - Ting Xu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
- Kavli Energy NanoScience Institute, University of California, Berkeley, CA, 94720, USA
| | - Yi Liu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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Yuan P, Xue R, Wang Y, Su Y, Zhao B, Wu C, An W, Zhao W, Ma R, Hu D. Horizontally-oriented barium titanate@polydomine/polyimide nanocomposite films for high-temperature energy storage. J Colloid Interface Sci 2024; 662:1052-1062. [PMID: 38394989 DOI: 10.1016/j.jcis.2024.02.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/04/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
High-temperature ceramics polymer dielectric nanocomposite materials have broad application prospects in energy storage. The barium titanate (BT) plays an important role as one of outstanding representative ceramics in the dielectric nanocomposite materials. However, there is little known for the effects of two-dimensional (2D) BT morphology and layout on the properties of high-temperature nanocomposite materials. Hence, 2D scale-like BT ceramic fillers were prepared from layered K0.8Li0.27Ti1.73O4 crystals as precursors using a combined solid-state and hydrothermal process. 2D scale-like BT@polydopamine (PDA) core-shell nanocomposites were prepared via coating PDA on the BT. BT@PDA/polyimide(PI) nanocomposite films were fabricated by horizontally oriented distribution of BT@PDA in the PI matrix. The BT@PDA/PI nanocomposite films exhibit a high energy density (3.34 J/cm3) and high charge-discharge efficiency (83.68 %) at 150 °C. It is currently the highest energy storage performance in the BT/PI nanocomposite films at 150 °C. The excellent properties are due to preventing upward breakdown of electrical pathways and promoting dispersion and entanglement of the electrical pathway routes. Additionally, strong electrostatic interactions between the different polymer chains (PDA and PI) restricts the movement of space charges. This work demonstrates that introducing horizontally oriented, organically shell-modified and 2D small-sized BT nanoparticles into a PI matrix is an effective method for improving energy storage performance.
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Affiliation(s)
- Peimei Yuan
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Ruixuan Xue
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Yan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi'an 710127, China
| | - Yao Su
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Bo Zhao
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - ChenLi Wu
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Wen An
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Weixing Zhao
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China.
| | - Rong Ma
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Dengwei Hu
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center for Titanium Based Functional Materials and Devices in Universities of Shaanxi Province, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China.
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5
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Tang X, Ding C, Yu S, Zhong C, Luo H, Chen S. Mechanism Study of Molecular Trap in All-Organic Polystyrene-Based Dielectric Composite. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306034. [PMID: 38126675 DOI: 10.1002/smll.202306034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/07/2023] [Indexed: 12/23/2023]
Abstract
It is a huge challenge to explore how charge traps affect the electric breakdown of polymer-based dielectric composites. In this paper, alkane and aromatic molecules with different substituents are investigated according to DFT theoretical method. The combination of strong electron-withdrawing groups and aromatic rings can establish high electron affinity molecules. 4'-Nitro-4-dimethylaminoazobenzene (NAABZ) with a vertical electron affinity of 1.39 eV and a dipole moment of 10.15 D is introduced into polystyrene (PSt) to analyze the influence of charge traps on electric properties. Marcus charge transfer theory is applied to calculate the charge transfer rate between PSt and NAABZ. The nature of charge traps is elaborated from a dynamic perspective. The enhanced breakdown mechanism of polymers-based composites stems from the constraint of carrier mobility caused by the change in transfer rate. But the electrophile nature of high electron affinity filler can decrease the potential barriers at the metal-polymer interface. Simultaneously, the relationship between the electron affinity of fillers and the breakdown strength of polymer-based composites is nonlinear because of the presence of the inversion region. Based on the deep understanding of the molecular trap, this work provides the theoretical calculation for the design and development of high-performance polymer dielectrics.
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Affiliation(s)
- Xinxuan Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Cuilian Ding
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Shiqi Yu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Cheng Zhong
- Huber Key Laboratory on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Hang Luo
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Sheng Chen
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
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6
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Yang M, Guo M, Xu E, Ren W, Wang D, Li S, Zhang S, Nan CW, Shen Y. Polymer nanocomposite dielectrics for capacitive energy storage. NATURE NANOTECHNOLOGY 2024; 19:588-603. [PMID: 38172431 DOI: 10.1038/s41565-023-01541-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 10/10/2023] [Indexed: 01/05/2024]
Abstract
Owing to their excellent discharged energy density over a broad temperature range, polymer nanocomposites offer immense potential as dielectric materials in advanced electrical and electronic systems, such as intelligent electric vehicles, smart grids and renewable energy generation. In recent years, various nanoscale approaches have been developed to induce appreciable enhancement in discharged energy density. In this Review, we discuss the state-of-the-art polymer nanocomposites with improved energy density from three key aspects: dipole activity, breakdown resistance and heat tolerance. We also describe the physical properties of polymer nanocomposite interfaces, showing how the electrical, mechanical and thermal characteristics impact energy storage performances and how they are interrelated. Further, we discuss multi-level nanotechnologies including monomer design, crosslinking, polymer blending, nanofiller incorporation and multilayer fabrication. We conclude by presenting the current challenges and future opportunities in this field.
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Affiliation(s)
- Minzheng Yang
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
| | - Mengfan Guo
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
| | - Erxiang Xu
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
| | - Weibin Ren
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
| | - Danyang Wang
- School of Materials Science and Engineering, The University of New South Wales, Sydney, Australia
| | - Sean Li
- School of Materials Science and Engineering, The University of New South Wales, Sydney, Australia
| | - Shujun Zhang
- Institute for Superconducting and Electronic Materials, AIIM, University of Wollongong, Wollongong, Australia.
| | - Ce-Wen Nan
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China.
| | - Yang Shen
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China.
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7
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Qi W, Li L, Han R, Hou Y, Zhou Z, Chen GX, Li Q. Enhancing Dielectric Properties of (CaCu 3Ti 4O 12 NWs-Graphene)/PVDF Ternary Oriented Composites by Hot Stretching. ACS OMEGA 2024; 9:13298-13305. [PMID: 38524490 PMCID: PMC10956412 DOI: 10.1021/acsomega.3c10111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 03/26/2024]
Abstract
Using high-dielectric inorganic ceramics as fillers can effectively increase the dielectric constant of polymer-based composites. However, a high percentage of fillers will inevitably lead to a decrease in the mechanical toughness of the composite materials. By introducing high aspect ratio copper calcium titanate (CaCu3Ti4O12) nanowires (CCTO NWs) and graphene as fillers, the ternary poly(vinylidene fluoride) (PVDF)-based composites (CCTO NWs-graphene)/PVDF with a significant one-dimensional orientation structure were prepared by hot stretching. CCTO NWs and graphene are arranged in a directional manner to form a large number of microcapacitor structures, which significantly improves the dielectric constant of the composites. When the ratio of CCTO NWs and graphene is 0.2 and 0.02, the oriented composites have the highest dielectric constant, which is 19.3% higher than the random composites, respectively. Numerical simulations reveal that the introduction of graphene and the construction of the one-dimensional oriented microstructure have a positive effect on improving the dielectric properties of the composites. This study provides a strategy to improve the dielectric properties of composite materials by structural design without changing the filler content, which has broad application prospects in the field of electronic devices.
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Affiliation(s)
- Wenning Qi
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Liuyang Li
- Key
Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Ruolin Han
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Yanbin Hou
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Zheng Zhou
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Guang-Xin Chen
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Qifang Li
- Key
Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
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Zeng T, Li Q, Liu D, Fu J, Zhong L, He J, Li Q, Yuan C. Improved capacitive energy storage performance in hybrid films with ultralow aminated molybdenum trioxide integration for high-temperature applications. MATERIALS HORIZONS 2024; 11:1539-1547. [PMID: 38251735 DOI: 10.1039/d3mh01928d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Dielectric capacitors play a pivotal role in advanced high-power electrical and electronic applications, acting as essential components for electrical energy storage. The current trend towards miniaturization in electronic devices and power systems highlights the increasing demand for scalable, high-performance ultra-thin dielectric films with a high-temperature stability. While significant progress has been made in enhancing the discharged energy density (Ue) of dielectric polymers at elevated temperatures, such advancements have faced certain challenges. Herein, an innovative molecular engineering approach for the bonding of amine-functionalized molybdenum trioxide (A-MoO3) with the dianhydride monomer of polyetherimide (PEI) is presented, leading to a reduction in conduction loss and the substantial enhancement in storage energy density under high-temperature and high-field conditions. It is revealed that charge redistribution at the bonding sites induces a subtle variation in the potential energy, creating an in-built electric field between the PEI matrix and A-MoO3 based on density functional theory (DFT) analyses. The observed phenomenon leads to an increase in the electron barrier, effectively inhibiting the release of trapped electrons. Notably, at conditions of 200 °C and 100 Hz, the PEI/A-MoO3 hybrid film demonstrates a notable Ue at η > 90%, reaching up to 5.53 J cm-3, surpassing the performance of many current dielectric polymers and composites. Furthermore, the hybrid film's exceptional cycling durability, coupled with its ability to be fabricated into large-area, uniform-quality films, underscores its potential in the development of dielectric energy storage devices tailored for extreme environments.
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Affiliation(s)
- Tan Zeng
- College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Qiao Li
- College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Dongduan Liu
- College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Jing Fu
- State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Lipeng Zhong
- College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Jinliang He
- State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Qi Li
- State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Chao Yuan
- College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China.
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Dai Z, Jia J, Ding S, Wang Y, Meng X, Bao Z, Yu S, Shen S, Yin Y, Li X. Polyphenylene Oxide Film Sandwiched between SiO 2 Layers for High-Temperature Dielectric Energy Storage. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38416689 DOI: 10.1021/acsami.3c18237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
The commercial capacitor using dielectric biaxially oriented polypropylene (BOPP) can work effectively only at low temperatures (less than 105 °C). Polyphenylene oxide (PPO), with better heat resistance and a higher dielectric constant, is promising for capacitors operating at elevated temperatures, but its charge-discharge efficiency (η) degrades greatly under high fields at 125 °C. Here, SiO2 layers are magnetron sputtered on both sides of the PPO film, forming a composite material of SiO2/PPO/SiO2. Due to the wide bandgap and high Young's modulus of SiO2, the breakdown strength (Eb) of this composite material reaches 552 MV/m at 125 °C (PPO: 534 MV/m), and the discharged energy density (Ue) under Eb improves to 3.5 J/cm3 (PPO: 2.5 J/cm3), with a significantly enhanced η of 89% (PPO: 70%). Furthermore, SiO2/PPO/SiO2 can discharge a Ue of 0.45 J/cm3 with an η of 97% at 125 °C under 200 MV/m (working condition in hybrid electric vehicles) for 20,000 cycles, and this value is higher than the energy density (∼0.39 J/cm3 under 200 MV/m) of BOPP at room temperature. Interestingly, the metalized SiO2/PPO/SiO2 film exhibits valuable self-healing behavior. These results make PPO-based dielectrics promising for high-temperature capacitor applications.
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Affiliation(s)
- Zhizhan Dai
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jiangheng Jia
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Song Ding
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yiwei Wang
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiangsen Meng
- Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Zhiwei Bao
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Shuhong Yu
- Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Shengchun Shen
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yuewei Yin
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaoguang Li
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Physics, and CAS Key Laboratory of Strongly Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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10
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Li Z, Zhang Y, Pan Z, Fan X, Li P, Chen W, Liu J, Li W. Enhancing Comprehensive Performance via Capturing and Scattering the Carriers inside PESU-Based Nanocomposite Film Capacitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10756-10763. [PMID: 38367030 DOI: 10.1021/acsami.3c18733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
Film capacitors have become key electronic components for electrical energy storage installations and high-power electronic systems. Nonetheless, high-temperature and high-electric-field environments would cause a surge of the energy loss, placing a fundamental challenge for film capacitors applied in harsh environments. Here, we constructed a composite film, combining poly(ether sulfone) (PESU) with excellent thermal stability and large-band-gap filler boron nitride nanosheets (BNNSs). The introduction of BNNSs would form deep/shallow traps inside the dielectric polymer matrix, effectively affecting charge migration. Via density functional theory (DFT) calculation, the higher highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the BNNS than the matrix facilitate scattering electrons and attracting holes. The resultant composite obtains the desired discharged energy densities (Ud) of 5.89 and 3.86 J/cm3 accompanied by an efficiency above 90% at 150 and 200 °C, respectively, surpassing those of existing dielectric materials at the high-temperature conditions. The paper provides a promising composite dielectric material for high-performance film capacitors capable of operating in harsh environments.
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Affiliation(s)
- Zhicheng Li
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yu Zhang
- Solid State Physics & Material Research Laboratory, School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China
| | - Zhongbin Pan
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Xu Fan
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Peng Li
- School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China
| | - Weidong Chen
- Institute of Corrosion Science and Technology, Guangzhou 510530, Guangdong, China
| | - Jinjun Liu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Weiping Li
- Department of Microelectronics Science and Engineering, School of Physical Science and Technology and Laboratory of Clean Energy Storage and Conversion, Ningbo University, Ningbo 315211, Zhejiang, China
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11
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Liu Z, Yang M, Wang Z, Zhao Y, Wang W, Dang ZM. Simultaneous Inhibition of Conduction Loss and Enhancement of Polarization Intensity of Polyetherimide Dielectrics for High-Temperature Capacitive Energy Storage. J Phys Chem Lett 2023; 14:11550-11557. [PMID: 38096129 DOI: 10.1021/acs.jpclett.3c02832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Polymer dielectrics with excellent high-temperature capacitive energy storage performance are in urgent demand for modern power electronic devices and high-voltage electrical systems. Nevertheless, the energy storage capability usually degrades dramatically at increased temperatures, owing to the exponentially increased conduction loss. Herein, a trace of commercially available aluminum nitride (AlN) nanoparticles is incorporated into the poly(ether imide) (PEI) matrix to inhibit the conduction loss. The nanostructured AlN component with a large specific surface area can provide abundant sites for the collision of carriers. More importantly, the generated new trap energy levels can immobilize the carriers, accordingly contributing to the reduction in leakage current. From this, the discharged energy density at 150 °C of PEI composites increases by 82.13% from 2.63 J/cm3 for pristine PEI to 4.79 J/cm3 for PEI composites. This work establishes a facile approach to enhancing the high-temperature capacitive performance of polymer dielectrics.
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Affiliation(s)
- Zeren Liu
- Institute of Energy Power Innovation, North China Electric Power University, Beijing 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Minhao Yang
- Institute of Energy Power Innovation, North China Electric Power University, Beijing 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Zepeng Wang
- Institute of Energy Power Innovation, North China Electric Power University, Beijing 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Yanlong Zhao
- Institute of Energy Power Innovation, North China Electric Power University, Beijing 102206, China
| | - Wei Wang
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Zhi-Min Dang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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12
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Yang M, Wang Z, Zhao Y, Liu Z, Pang H, Dang ZM. Unifying and Suppressing Conduction Losses of Polymer Dielectrics for Superior High-Temperature Capacitive Energy Storage. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2309640. [PMID: 38100119 DOI: 10.1002/adma.202309640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/02/2023] [Indexed: 12/31/2023]
Abstract
Superior high-temperature capacitive performance of polymer dielectrics is critical for the modern film capacitor demanded in the harsh-environment electronic and electrical systems. Unfortunately, the capacitive performance degrades rapidly at elevated temperatures owing to the exponential growth of conduction loss. The conduction loss is mainly composed of electrode and bulk-limited conduction. Herein, the contribution of surface and bulk factors is unified to conduction loss, and the loss is thoroughly suppressed. The experimental results demonstrate that the polar oxygen-containing groups on the surface of polymer dielectrics can act as the charge trap sites to immobilize the injected charges from electrode, which can in turn establish a built-in field to weaken the external electric field and augment the injection barrier height. Wide bandgap aluminum oxide (Al2 O3 ) nanoparticle fillers can serve as deep traps to constrain the transport of injected or thermally activated charges in the bulk phase. From this, at 200 °C, the discharged energy density with a discharge-charge efficiency of 90% increases by 1058.06% from 0.31 J cm-3 for pristine polyetherimide to 3.59 J cm-3 for irradiated composite film. The principle of simultaneously inhibiting the electrode and bulk-limited conduction losses could be easily extended to other polymer dielectrics for high-temperature capacitive performance.
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Affiliation(s)
- Minhao Yang
- Institute of Energy Power Innovation, North China Electric Power University, Beijing, 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
- State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing, 100084, China
| | - Zepeng Wang
- Institute of Energy Power Innovation, North China Electric Power University, Beijing, 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
| | - Yanlong Zhao
- Institute of Energy Power Innovation, North China Electric Power University, Beijing, 102206, China
| | - Zeren Liu
- Institute of Energy Power Innovation, North China Electric Power University, Beijing, 102206, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
| | - Hui Pang
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
- Huairou Laboratory, Beijing, 101499, China
| | - Zhi-Min Dang
- State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing, 100084, China
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13
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Deshmukh AA, Wu C, Yassin O, Chen L, Shukla S, Zhou J, Khomane AR, Gurnani R, Lei T, Liang X, Ramprasad R, Cao Y, Sotzing G. Effect of Fluorine in Redesigning Energy-Storage Properties of High-Temperature Dielectric Polymers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46840-46848. [PMID: 37782814 DOI: 10.1021/acsami.3c08858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Exploration of novel polymer dielectrics exhibiting high electric-field stability and high energy density with high efficiency at elevated temperatures is urgently needed for ever-demanding energy-storage technologies. Conventional high-temperature polymers with conjugated backbone structures cannot fulfill this demand due to their deteriorated performance at elevated electric fields. Here, in search of new polymer structures, we have explored the effect of fluorine groups on the energy-storage properties of polyoxanorbornene imide polymers with simultaneous wide band gap and high glass transition temperature (Tg). The systematic synthesis of polymers with varying amounts of fluorine is carried out and characterized for the energy-storage properties. The incorporation of fluorine imparts flexibility to the polymer structure, and free-standing films can be obtained. An oxanorbornene copolymer with 25% fluorination exhibits a high breakdown strength of 700 MV/m and a discharged energy density of 6.3 J/cm3 with 90% efficiency. The incorporation of fluorine helps to increase the polymer band gap, as observed using UV-vis spectroscopy, but lowers the polymer Tg, as shown by differential scanning calorimetry. Both the displacement-electric field (D-E) hysteresis loop and high-field conduction measurements show increased conduction loss for polymers with higher fluorine content, despite their larger band gap. The presence of excess free volume may play a key role in increasing the conduction current and lowering the efficiency of polymers with high fluorine content. Such an improved understanding of the effect of fluorination on the polymer energy-storage properties, as revealed in this systematic molecular engineering study, broadens the basis of material-informatic proxies to enable a more targeted codesign of scalable and efficient polymer dielectrics.
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Affiliation(s)
- Ajinkya A Deshmukh
- Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Chao Wu
- Electrical Insulation Research Center, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Omer Yassin
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Lihua Chen
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stuti Shukla
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jierui Zhou
- Electrical Insulation Research Center, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Ashish R Khomane
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Rishi Gurnani
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ting Lei
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xidong Liang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Rampi Ramprasad
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yang Cao
- Electrical Insulation Research Center, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Electrical and Computer Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Gregory Sotzing
- Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
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14
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Yan J, Wang H, Zeng J, Zhang X, Nan CW, Zhang S. Carboxylated Poly (p-Phenylene Terephthalamide) Reinforced Polyetherimide for High-Temperature Dielectric Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304310. [PMID: 37340581 DOI: 10.1002/smll.202304310] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Indexed: 06/22/2023]
Abstract
Dielectric energy storage polymers play a vital role in advanced electronics and electrical systems, due to their high breakdown strength, excellent reliability, and easy fabrication. However, the low dielectric constant and poor thermal resistance of dielectric polymers limit their energy storage density and working temperatures, making them less versatile for broader applications. In this work, a novel carboxylated poly (p-phenylene terephthalamide) (c-PPTA) is synthesized and employed to simultaneously enhance the dielectric constant and thermal resistance of polyetherimide (PEI), leading to a discharged energy density of 6.4 J cm-3 at 150 °C. The introduction of c-PPTA molecules effectively reduces the ΠΠ stacking effect and increases the average chain spacing between polymer molecules, which is conducive to improving the dielectric constant. Additionally, c-PPTA molecules with stronger positive charges and high dipole moments can capture electrons, resulting in reduced conduction loss and enhanced breakdown strength at high temperatures. The coiled capacitor fabricated with the PEI/c-PPTA film exhibits superior capacitance performances and higher working temperatures compared to commercial metalized PP capacitors, demonstrating great potential for dielectric polymers in high-temperature electronic and electrical energy storage systems.
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Affiliation(s)
- Jingjing Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Huan Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Junyang Zeng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Xin Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, Wuhan, 430070, P. R. China
- International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Ce-Wen Nan
- School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, P. R. China
| | - Shujun Zhang
- Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, North Wollongong, 2522, Australia
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15
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Yang M, Zhou L, Li X, Ren W, Shen Y. Polyimides Physically Crosslinked by Aromatic Molecules Exhibit Ultrahigh Energy Density at 200 °C. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302392. [PMID: 37196180 DOI: 10.1002/adma.202302392] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/23/2023] [Indexed: 05/19/2023]
Abstract
Polymer dielectrics possess significant advantages in electrostatic energy storage applications, such as high breakdown strength (Eb ) and efficiency (η), while their discharged energy density (Ud ) at high temperature is limited by the decrease in Eb and η. Several strategies including introducing inorganic components and crosslinking have been investigated to improve the Ud of polymer dielectrics, but new issues will be encountered, e.g., the sacrifice of flexibility, the degradation of the interfacial insulating property and the complex preparation process. In this work, 3D rigid aromatic molecules are introduced into aromatic polyimides to form physical crosslinking networks through electrostatic interactions between their oppositely charged phenyl groups. The dense physical crosslinking networks strengthen the polyimides to boost the Eb , and the aromatic molecules trap the charge carriers to suppress the loss, allowing the strategy to combine the advantages of inorganic incorporation and crosslinking. This study demonstrates that this strategy is well applicable to a number of representative aromatic polyimides, and ultrahigh Ud of 8.05 J cm-3 (150 °C) and 5.12 J cm-3 (200 °C) is achieved. Furthermore, the all-organic composites exhibit stable performances during ultralong 105 charge-discharge cycles in harsh environments (500 MV m-1 and 200 °C) and prospects for large-scale preparation.
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Affiliation(s)
- Minzheng Yang
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Le Zhou
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Xin Li
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Weibin Ren
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Yang Shen
- School of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China
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16
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Zhang C, Tong X, Liu Z, Zhang Y, Zhang T, Tang C, Liu X, Chi Q. Enhancement of Energy Storage Performance of PMMA/PVDF Composites by Changing the Crystalline Phase through Heat Treatment. Polymers (Basel) 2023; 15:polym15112486. [PMID: 37299285 DOI: 10.3390/polym15112486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
In today's contemporary civilization, there is a growing need for clean energy focused on preserving the environment; thus, dielectric capacitors are crucial equipment in energy conversion. On the other hand, the energy storage performance of commercial BOPP (Biaxially Oriented Polypropylene) dielectric capacitors is relatively poor; hence, enhancing their performance has drawn the attention of an increasing number of researchers. This study used heat treatment to boost the performance of the composite made from PMAA and PVDF, combined in various ratios with good compatibility. The impacts of varying percentages of PMMA-doped PMMA/PVDF mixes and heat treatment at varying temperatures were systematically explored for their influence on the attributes of the blends. After some time, the blended composite's breakdown strength improves from 389 kV/mm to 729.42 kV/mm at a processing temperature of 120 °C. Consequently, the energy storage density is 21.12 J/cm3, and the discharge efficiency is 64.8%. The performance has been significantly enhanced compared to PVDF in its purest state. This work offers a helpful technique for designing polymers that perform well as energy storage materials.
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Affiliation(s)
- Changhai Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Xu Tong
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Zeyang Liu
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Yue Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Tiandong Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Chao Tang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
| | - Xianli Liu
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
| | - Qingguo Chi
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
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17
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Pan Z, Mao M, Zhang B, Li Z, Song K, Li HF, Mao Z, Wang D. Excellent Energy Storage Performance in Epoxy Resin Dielectric Polymer Films by a Facile Hot-Pressing Method. Polymers (Basel) 2023; 15:polym15102315. [PMID: 37242890 DOI: 10.3390/polym15102315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/08/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
Epoxy resin (EP), as a kind of dielectric polymer, exhibits the advantages of low-curing shrinkage, high-insulating properties, and good thermal/chemical stability, which is widely used in electronic and electrical industry. However, the complicated preparation process of EP has limited their practical applications for energy storage. In this manuscript, bisphenol F epoxy resin (EPF) was successfully fabricated into polymer films with a thickness of 10~15 μm by a facile hot-pressing method. It was found that the curing degree of EPF was significantly affected by changing the ratio of EP monomer/curing agent, which led to the improvement in breakdown strength and energy storage performance. In particular, a high discharged energy density (Ud) of 6.5 J·cm-3 and efficiency (η) of 86% under an electric field of 600 MV·m-1 were obtained for the EPF film with an EP monomer/curing agent ratio of 1:1.5 by hot pressing at 130 °C, which indicates that the hot-pressing method could be facilely employed to produce high-quality EP films with excellent energy storage performance for pulse power capacitors.
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Affiliation(s)
- Zhe Pan
- College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Minmin Mao
- College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Bin Zhang
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
| | - Zhongyu Li
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Kaixin Song
- College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Hai-Feng Li
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macao SAR 999078, China
| | - Zhu Mao
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Dawei Wang
- School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, China
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18
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Xia S, Shi Z, Sun K, Yin P, Dastan D, Liu Y, Cui H, Fan R. Achieving remarkable energy storage enhancement in polymer dielectrics via constructing an ultrathin Coulomb blockade layer of gold nanoparticles. MATERIALS HORIZONS 2023. [PMID: 37039502 DOI: 10.1039/d3mh00084b] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
High-energy density polymer dielectrics play a crucial role in various pulsed energy storage and conversion systems. So far, many strategies have been demonstrated to be able to effectively improve the energy density of polymer dielectrics, but sophisticated fabrication processes are usually needed which result in high cost and poor repeatability. Herein, an easy-operated sputtering and hot-pressing process is developed to significantly enhance the energy density of polymer dielectrics. Surprisingly, for the poly(vinylidene fluoride-hexafluoropropylene) films sputtered with merely 0.0064 vol% gold nanoparticles, the energy density is remarkably improved by 84.3% because of the concurrent enhancements in breakdown strength (by 37.5%) and dielectric permittivity (by 25.5%), which is demonstrated to have originated from the unique Coulomb blockade and micro-capacitor effect of the gold nanoparticles. It is further confirmed that this design strategy is also applicable for commercial biaxially oriented polypropylene and poly(methyl methacrylate). This work offers a novel, easy-operated and universally applicable route to improve the energy density of polymeric dielectrics, which paves the way for their application in modern electronics and power modules.
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Affiliation(s)
- Shuimiao Xia
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Zhicheng Shi
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Kai Sun
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, P. R. China.
| | - Peng Yin
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Davoud Dastan
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georagi-30332, USA
| | - Yao Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
| | - Hongzhi Cui
- School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Runhua Fan
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, P. R. China.
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
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19
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Tripathy D, Chakroborty S, Gadtya AS, Mahaling RN, Moharana S, Barik A, Pal K. Enhanced dielectric and electrical performance of phosphonic acid-modified tantalum (Ta)-doped potassium sodium niobate (KNaNbO 3)-P(VDF-HFP) composites. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2023; 46:21. [PMID: 36971876 DOI: 10.1140/epje/s10189-023-00279-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
PA-KNNT-P(VDF-HFP) composite films were synthesized using facile solution casting technique. Due to their wide range of applications in dielectric and electrical systems, phosphonic acid (PA)-modified tantalum-doped potassium sodium niobate (KNNT)-polyvinylidene fluoride co-hexafluoropropylene P(VDF-HFP) composite films have piqued the interest of academic researchers. Microstructural analysis showed that PA layers incorporated onto the KNNT particles within the polymer matrix. The PA-KNNT-P(VDF-HFP) composite exhibited improved dielectric and electrical performance over a broad range of frequency, and the value of the dielectric constant of the P(VDF-HFP) composites is improved by ≈119 over the P(VDF-HFP) matrix at a filler loading 19 wt.%. Moreover, PA-KNNT-P(VDF-HFP) composite also reveals higher dielectric constant (≈ 119) and AC conductivity than P(VDF-HFP)-KNNT composites, while maintaining suppressed dielectric loss ([Formula: see text] at 102 Hz). It is also observed that the PA-KNNT-P(VDF-HFP) composite exhibited an insulator-conductor transition with a percolation threshold of fKNNT = 13.4 wt.%. As a result of their exceptional dielectric and electrical characteristics, PA-KNNT-P(VDF-HFP) composites have the potential to find exciting practical applications in a variety of electronic domains.
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Affiliation(s)
- Debajani Tripathy
- School of Applied Sciences, Centurion University of Technology and Management, Paralakhemundi, Odisha, India
| | | | - Ankita Subhrasmita Gadtya
- School of Applied Sciences, Centurion University of Technology and Management, Paralakhemundi, Odisha, India
| | - Ram Naresh Mahaling
- Laboratory of Polymeric and Materials Chemistry, School of Chemistry, Sambalpur University, Jyoti Vihar, Burla, 768019, India
| | - Srikanta Moharana
- School of Applied Sciences, Centurion University of Technology and Management, Paralakhemundi, Odisha, India.
| | - Arundhati Barik
- Rama Devi Women's University, Bhubaneswar, Odisha, 751007, India
| | - Kaushik Pal
- University Centre for Research and Development (UCRD), Department of Physics, Chandigarh University, Mohali, Gharuan, Punjab, India.
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