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Xie M, He Y, Li M, Fan W, Sun Q, Fu W. A "Bottom-Up" Strategy for High-Performance Benzocyclobutene (BCB)-Subnanometer Inorganic Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2024; 16:54751-54760. [PMID: 39344043 DOI: 10.1021/acsami.4c14298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Developing benzocyclobutene (BCB) nanocomposites with ultra-small inorganic sizes represents a formidable challenge, although it offers great potential to produce materials with customizable structural and rich functional properties. In this study, we present a "bottom-up" design strategy for creating cross-linked benzocyclobutene (BCB) nanocomposites with highly dispersed nanodomains, such as organoalkoxysilane. This approach leverages ring-opening metathesis polymerization (ROMP) and thermally induced cycloaddition reactions to embed oligomeric silsesquioxanes, achieving a unique molecular structure with promising low-dielectric applications. The synthesis involves organoalkoxysilane and BCB as pendant groups of polynorbornenes that are covalently integrated. Additionally, the methoxyl groups of linear polymers could be further hydrolyzed under acidic conditions, and BCB groups could undergo thermal-induced ring-opening at high temperatures and Diels-Alder addition between themselves and vinyl groups, respectively. Fourier transform infrared (FTIR) spectroscopy analyses suggested the presence of ladder or network structures and high-resolution transmission electron microscopy (HRTEM) images presented the well-dispersed inorganic clusters, facilitating excellent dielectric properties with a dielectric constant (Dk) of 2.25 and a dissipation factor (Df) of 2.27 × 10-4. Compared with previously reported low-Dk materials, the cured nanocomposites also exhibited a significantly balanced enhancement of their comprehensive properties. This molecular bottom-up strategy provided a simple and universal method for constructing BCB-inorganic nanocomposites featuring a subnanometer inorganic structure, paving the way for future investigation into new classes of polymer-inorganic nanocomposites with a low Dk.
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Affiliation(s)
- Meng Xie
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yan He
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Menglu Li
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wenjie Fan
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Quan Sun
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wenxin Fu
- Key Laboratory of Science and Technology on High-Tech Polymer Materials, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
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Zhang Y, Lin Y, Ma Y, Yuan Q, Yang H. Synergistically enhanced discharged energy density and efficiency achieved in designed polyetherimide-based composites via asymmetrical interlayer structure induced optimized interface effectiveness. MATERIALS HORIZONS 2024; 11:4759-4768. [PMID: 39012046 DOI: 10.1039/d4mh00629a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
The continuous advancement in energy storage technologies necessitates the iteration of energy storage dielectrics urgently. However, the current state-of-the-art composite films fail to meet the application requirements of energy storage devices, which demand a combination of high discharged energy density (Ue), high energy storage efficiency (η), and excellent high-temperature performance. To address this challenge, we present an innovative interlayer composed of pure BN nanosheets in polyetherimide (PEI)-based asymmetrical multilayered composites doped with Na0.5Bi0.5TiO3 ceramic fibers. This innovative structure confers the PEI-based composites upon synergistic optimization of polarization intensity, breakdown strength and energy loss by designed interface effectiveness adopting tailored filler and interface configuration as modulation means, which can be further confirmed by finite element simulations and comparative experiments. The resultant composite film achieves an excellent Ue of 22.95 J cm-3 and an ultra-high η of 96.81% at ambient temperature, along with high-temperature performances of 12.88 J cm-3 and 79.26% at 150 °C, surpassing all previously reported polymer films in terms of both metrics. This study provides new insights for developing high-performance energy storage dielectrics suitable for practical applications.
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Affiliation(s)
- Yongjing Zhang
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Ying Lin
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Yanlong Ma
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Qibin Yuan
- School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Haibo Yang
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
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Zhou Y, Zhang Z, Tang Q, Ma X, Hou X. Enhancing the high-temperature energy storage properties of PEI dielectrics by constructing trap-rich covalently cross-linked networks via POSS-functionalized BNNS. MATERIALS HORIZONS 2024; 11:4348-4358. [PMID: 38919994 DOI: 10.1039/d4mh00299g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Polymer films are ideal dielectric materials for energy storage capacitors due to their light weight and flexibility, but lower energy density and poor heat resistance greatly limit their application in high-temperature energy storage. Unlike the traditional method of solely adding wide-bandgap inorganic fillers to enhance energy density, in this study we constructed trap-rich hybrid covalently cross-linked networks in polyetherimide (PEI) via reactive polyhedral oligomeric silsesquioxane (POSS)-functionalized boron nitride nanosheets (BNNS@POSS), which not only serve as interfacial layers for dielectric transitions and insulating barriers but also create deeper traps and higher energy barriers in the region of cross-linked chains. This strategy based on the co-modulation of interfaces and traps achieved the compatibility of high polarization and high breakdown strength and improved energy storage performance. Therefore, the composite film BNNS@POSS/PEI with the addition of 5 wt% BNNS@POSS achieved a maximum discharge energy density and charge-discharge efficiency at 150 °C of 6.16 J cm-3 and 89.92%, and maintained high values at 200 °C of 4.12 J cm-3 and 88.38%, respectively. Moreover, the glass transition temperature (Tg) of the composite dielectrics increased by 20.2 °C. This work provides a promising candidate material and development directions for research in the field of high-temperature energy storage capacitors.
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Affiliation(s)
- Yijie Zhou
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - Zongwu Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - Qiufan Tang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
- Xi'an Modern Chemistry Research Institute, Xi'an 10072, PR China
| | - Xiaoyan Ma
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - Xiao Hou
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
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Han R, Zeng F, Xia Q, Pang X, Wu X. Zwitterionic cellulose nanofibers-based hydrogels with high toughness, ionic conductivity, and healable capability in cryogenic environments. Carbohydr Polym 2024; 340:122271. [PMID: 38858021 DOI: 10.1016/j.carbpol.2024.122271] [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: 03/04/2024] [Revised: 05/03/2024] [Accepted: 05/13/2024] [Indexed: 06/12/2024]
Abstract
Extreme environmental conditions often lead to irreversible structural failure and functional degradation in hydrogels, limiting their service life and applicability. Achieving high toughness, self-healing, and ionic conductivity in cryogenic environments is vital to broaden their applications. Herein, we present a novel approach to simultaneously enhance the toughness, self-healing, and ionic conductivity of hydrogels, via inducing non-freezable water within the zwitterionic cellulose-based hydrogel skeleton. This approach enables resulting hydrogel to achieve an exceptional toughness of 10.8 MJ m-3, rapid self-healing capability (98.9 % in 30 min), and high ionic conductivity (2.9 S m-1), even when subjected to -40 °C, superior to the state-of-the-art hydrogels. Mechanism analyses reveal that a significant amount of non-freezable water with robust electrostatic interactions is formed within zwitterionic cellulose nanofibers-modified polyurethane molecular networks, imparting superior freezing tolerance and versatility to the hydrogel. Importantly, this strategy harnesses the non-freezable water molecular state of the zwitterionic cellulose nanofibers network, eliminating the need for additional antifreeze and organic solvents. Furthermore, the dynamic Zn coordination within these supramolecular molecule chains enhances interfacial interactions, thereby promoting rapid subzero self-healing and exceptional mechanical strength. Demonstrating its potential, this hydrogel can be used in smart laminated materials, such as aircraft windshields.
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Affiliation(s)
- Ruiheng Han
- College of Material Science and Engineering, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fan Zeng
- College of Material Science and Engineering, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qingqing Xia
- College of Material Science and Engineering, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xiangchao Pang
- College of Material Science and Engineering, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xianzhang Wu
- College of Material Science and Engineering, Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
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Liu X, Chen D, Li J, Zhong SL, Feng Y, Yue D, Sheng D, Chen H, Hao X, Dang ZM. Atomic-Level Matching Metal-Ion Organic Hybrid Interface to Enhance Energy Storage of Polymer-Based Composite Dielectrics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402239. [PMID: 38519452 DOI: 10.1002/adma.202402239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 03/16/2024] [Indexed: 03/25/2024]
Abstract
In this work, a distinctive "metal-ion organic hybrid interface" (MOHI) between polyimide (PI) and calcium niobate (CNO) nanosheets is designed. The metal ions in the MOHI can achieve atomic-level matching not only with the inorganic CNO, but also with the PI chains, forming uniform and strong chemical bonds. These results are demonstrated by experiment and theory calculations. Significantly, the MOHI reduces the free volume and introduces deep traps across the filler-matrix interfacial area, thus suppressing the electric field distortion in PI-based composite dielectrics. Consequently, PI-based dielectric containing the MOHI exhibits excellent energy storage performance. The energy storage densities (Ue) of the composite dielectric reach 9.42 J cm-3 and 4.75 J cm-3 with energy storage efficiency (η) of 90% at 25 °C and 150 °C respectively, which are 2.6 and 11.6 times higher than those of pure PI. This study provides new ideas for polymer-based composite dielectrics in high energy storage.
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Affiliation(s)
- Xiaoxu Liu
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Dongyang Chen
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Jialong Li
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Shao-Long Zhong
- State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Yu Feng
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Dong Yue
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Dawei Sheng
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Haonan Chen
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Xiaodong Hao
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Zhi-Min Dang
- State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, P. R. 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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