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Meng Z, Zhang T, Zhang C, Shang Y, Lei Q, Chi Q. Advances in Polymer Dielectrics with High Energy Storage Performance by Designing Electric Charge Trap Structures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2310272. [PMID: 38109702 DOI: 10.1002/adma.202310272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/06/2023] [Indexed: 12/20/2023]
Abstract
Dielectric capacitors have been developed for nearly a century, and all-polymer film capacitors are currently the most popular. Much effort has been devoted to studying polymer dielectric capacitors and improving their capacitive performance, but their high conductivity and capacitance losses under high electric fields or elevated temperatures are still significant challenges. Although many review articles have reported various strategies to address these problems, to the best of current knowledge, no review article has summarized the recent progress in the high-energy storage performance of polymer-based dielectric films with electric charge trap structures. Therefore, this paper first reviews the charge trap characterization methods for polymeric dielectrics and discusses their strengths and weaknesses. The research progress on the design of charge trap structures in polymer dielectric films, including molecular chain optimization, organic doping, blending modification, inorganic doping, multilayered structures, and the mechanisms of the charge trap-induced enhancement of the capacitive performance of polymers are systematically reviewed. Finally, a summary and outlook on the fundamental theory of charge trap regulation, performance characterization, numerical calculations, and engineering applications are presented. This review provides a valuable reference for improving the insulation and energy storage performance of dielectric capacitive films.
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Affiliation(s)
- Zhaotong Meng
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Tiandong Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Changhai Zhang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Yanan Shang
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Qingquan Lei
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Qingguo Chi
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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Systems of conductive skin for power transfer in clinical applications. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2021; 51:171-184. [PMID: 34477935 PMCID: PMC8964546 DOI: 10.1007/s00249-021-01568-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/29/2021] [Accepted: 08/12/2021] [Indexed: 11/03/2022]
Abstract
The primary aim of this article is to review the clinical challenges related to the supply of power in implanted left ventricular assist devices (LVADs) by means of transcutaneous drivelines. In effect of that, we present the preventive measures and post-operative protocols that are regularly employed to address the leading problem of driveline infections. Due to the lack of reliable wireless solutions for power transfer in LVADs, the development of new driveline configurations remains at the forefront of different strategies that aim to power LVADs in a less destructive manner. To this end, skin damage and breach formation around transcutaneous LVAD drivelines represent key challenges before improving the current standard of care. For this reason, we assess recent strategies on the surface functionalization of LVAD drivelines, which aim to limit the incidence of driveline infection by directing the responses of the skin tissue. Moreover, we propose a class of power transfer systems that could leverage the ability of skin tissue to effectively heal short diameter wounds. In this direction, we employed a novel method to generate thin conductive wires of controllable surface topography with the potential to minimize skin disruption and eliminate the problem of driveline infections. Our initial results suggest the viability of the small diameter wires for the investigation of new power transfer systems for LVADs. Overall, this review uniquely compiles a diverse number of topics with the aim to instigate new research ventures on the design of power transfer systems for IMDs, and specifically LVADs.
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Kim M, Lee SH. Modified Molecular Chain Displacement Analysis Employing Electro-Mechanical Threshold Energy Condition for Direct Current Breakdown of Low-Density Polyethylene. Polymers (Basel) 2021; 13:2746. [PMID: 34451288 PMCID: PMC8401579 DOI: 10.3390/polym13162746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/05/2021] [Accepted: 08/13/2021] [Indexed: 11/16/2022] Open
Abstract
In an HVDC environment, space charge accumulated in polymeric insulators causes severe electric field distortion and degradation of breakdown strength. To analyze the breakdown characteristics, here, the space charge distribution was numerically evaluated using the bipolar charge transport (BCT) model, considering the temperature gradient inside the polymeric insulator. In particular, we proposed an electro-mechanical threshold energy condition, resulting in the modified molecular chain displacement model. The temperature gradient accelerates to reduce the breakdown strength with the polarity-reversal voltage, except during the harshest condition, when the temperature of the entire polymeric insulator was 70 °C. The energy imbalance inside the insulator caused by polarity-reversal voltage reduced the breakdown strength by 82%. Finally, this numerical analysis model can be used universally to predict the breakdown strength of polymeric insulators in various environments, and help in evaluating the electrical performance of polymeric insulators.
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Affiliation(s)
| | - Se-Hee Lee
- School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea;
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Tokobaro PEA, Larocca NM, Backes EH, Pessan LA. Effects of mineral fillers addition and preparation method on the morphology and electrical conductivity of epoxy/multiwalled carbon nanotube nanocomposites. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Nelson Marcos Larocca
- Graduate Program in Materials Science and Engineering Federal University of São Carlos São Carlos Brazil
| | - Eduardo Henrique Backes
- Graduate Program in Materials Science and Engineering Federal University of São Carlos São Carlos Brazil
| | - Luiz Antonio Pessan
- Graduate Program in Materials Science and Engineering Federal University of São Carlos São Carlos Brazil
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Zhang R, Xu Q, Bai S, Hai J, Cheng L, Xu G, Qin Y. Enhancing the filtration efficiency and wearing time of disposable surgical masks using TENG technology. NANO ENERGY 2021; 79:105434. [PMID: 33042770 PMCID: PMC7534667 DOI: 10.1016/j.nanoen.2020.105434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 05/17/2023]
Abstract
The COVID-19 pandemic has caused an unprecedented human and health crisis. And the shortage of protective equipment, especially the personal protective disposable surgical masks, has been a great challenge. Here, we developed an effective and simple scheme to prolong the lifetime of disposable surgical masks without changing their current structure, which is beneficial to solve the shortage of personal masks. After electrifying the meltblown PP filter by the new-developed single-electrode-based sliding triboelectric nanogenerator (TENG) charge replenishment (NGCR) technology, the processed filter is bipolar charged and has a filtration efficiency beyond 95% for the particulate matter (PM) ranging from PM0.3 to PM10.0. Further, we demonstrate the 80 °C dry heating is an effective decontamination method. This method is compatible with single-electrode-based sliding TENG charge replenishment technology. The 80 °C dry heating and the NGCR technology can make up an effective regeneration procedure for the mask. Even after ten cycles of simulated 4 h wearing process and such regeneration procedure, the filtration efficiency of the disposable surgical masks PM0.3 is still higher than 95%.
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Affiliation(s)
- Ruichao Zhang
- Insitute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Qi Xu
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710071, China
| | - Suo Bai
- Insitute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Jun Hai
- State Key Laboratory of Applied Organic Chemistry Lanzhou University and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Li Cheng
- Insitute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Guoqiang Xu
- State Key Laboratory of Applied Organic Chemistry Lanzhou University and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Yong Qin
- Insitute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
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Neupane GR, Hari P. Role of Polyvinylpyrrolidone (PVP) on Controlling the Structural, Optical, and Electrical Properties of Vanadium Pentoxide (V
2
O
5
) Nanoparticles. ChemistrySelect 2020. [DOI: 10.1002/slct.202002916] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ganga R. Neupane
- Department of Physics and Engineering Physics University of Tulsa Tulsa Oklahoma 74104 USA
| | - Parameswar Hari
- Department of Physics and Engineering Physics University of Tulsa Tulsa Oklahoma 74104 USA
- The Oklahoma Photovoltaic Research Institute University of Tulsa Tulsa Oklahoma 74104 USA
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Zhang T, Chen X, Thakur Y, Lu B, Zhang Q, Runt J, Zhang QM. A highly scalable dielectric metamaterial with superior capacitor performance over a broad temperature. SCIENCE ADVANCES 2020; 6:eaax6622. [PMID: 32042896 PMCID: PMC6981089 DOI: 10.1126/sciadv.aax6622] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 11/20/2019] [Indexed: 05/19/2023]
Abstract
Although many polymers exhibit excellent dielectric performance including high energy density with high efficiency at room temperature, their electric and dielectric performance deteriorates at high temperatures (~150°C). Here, we show that nanofillers at very low volume content in a high-temperature (high-glass transition temperature) semicrystalline dipolar polymer, poly(arylene ether urea), can generate local structural changes, leading to a marked increase in both dielectric constant and breakdown field, and substantially reduce conduction losses at high electric fields and over a broad temperature range. Consequently, the polymer with a low nanofiller loading (0.2 volume %) generates a high discharged energy density of ca. 5 J/cm3 with high efficiency at 150°C. The experimental data reveal microstructure changes in the nanocomposites, which, at 0.2 volume % nanofiller loading, reduce constraints on dipole motions locally in the glassy state of the polymer, reduce the mean free path for the mobile charges, and enhance the deep trap level.
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Affiliation(s)
- Tian Zhang
- School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Xin Chen
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Yash Thakur
- School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Biao Lu
- School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Qiyan Zhang
- School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - J. Runt
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Q. M. Zhang
- School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
- Corresponding author.
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Díez-Pascual AM. Nanoparticle Reinforced Polymers. Polymers (Basel) 2019; 11:polym11040625. [PMID: 30960608 PMCID: PMC6523703 DOI: 10.3390/polym11040625] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 04/01/2019] [Indexed: 01/14/2023] Open
Affiliation(s)
- Ana María Díez-Pascual
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Institute of Chemistry Research "Andrés M. del Río" (IQAR), University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.6, 28871 Madrid, Spain.
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