Glass Dielectrics in Extreme High‐Temperature Environment

Gao, Jun; Kwon, Do-Kyun; Perini, Steve; Long, Jeffery; Zhang, Shihai; Lanagan, Michael T.

doi:10.1111/jace.14424

Cited by 5 publications

(4 citation statements)

References 18 publications

(33 reference statements)

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“…Subsequently, 10 μm thick commercial boroaluminosilicate glasses (OA‐10G, NEG, Shiga, Japan) were tested and compared with conventional high‐temperature polymers. As a result, OA‐10G exhibits excellent stability of energy storage properties up to 200°C, U e > 11 J cm −3 and η of 95%, which are almost three times higher than polyetherimide (PEI) [48]. The dielectric performance of low alkali of alkali‐free glasses exceeds the known polymer dielectrics.…”

Section: High‐temperature Inorganic Dielectricsmentioning

confidence: 99%

Dielectric materials for high‐temperature capacitors

Fan

Liu

Yang

et al. 2018

IET Nanodielectrics

164

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Dielectric materials with excellent energy storage capability at elevated temperatures are critical to meet the increasing demand of electrical energy storage and power conditioning at extreme conditions such as hybrid electric vehicles, underground oil industries and aerospace systems. This review study summarises the important aspects and recent advances in the development of nanostructured dielectric materials including ceramics, polymers and polymer composites for hightemperature capacitor applications. The advantages and limitations of current dielectric materials are discussed and analysed. Ongoing research strategies to suppress the conduction loss and optimise the high-temperature capacitive performance of dielectrics have been highlighted. A summary and outlook will conclude this review.

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Section: High‐temperature Inorganic Dielectricsmentioning

confidence: 99%

Dielectric materials for high‐temperature capacitors

Fan

Liu

Yang

et al. 2018

IET Nanodielectrics

164

View full text Add to dashboard Cite

show abstract

“…Dielectric capacitors are widely used as indispensable passive components in modern power electronics and electrical systems. A wide range of dielectric materials based on polymers, − glasses, − ceramics, − glass-ceramics, − and composites − have been studied extensively to develop dielectric capacitors exhibiting both a high power density and a high energy density. Dielectric capacitors store energy based on electrostatic charge without involving electrochemical reactions or mass transport that is required in rechargeable batteries and fuel cells.…”

Section: Introductionmentioning

confidence: 99%

“…Dielectric capacitors, however, typically exhibit a low energy density, which is limited mainly by the dielectric breakdown strength (DBS) and relative permittivity ( ε r ). Dielectric capacitors made of polymers − and glasses − can exhibit a very high DBS (typically in the range of 1–10 MV/cm), but their low ε r (typically <10) limits the energy density. On the contrary, dielectric ceramics, particularly those based on relaxor ferroelectrics (RFEs) − ,− and antiferroelectrics (AFEs), − can display large ε r values on the order of 100–1000, but they often suffer from relatively low DBSs, typically <500 kV/cm.…”

Section: Introductionmentioning

confidence: 99%

Glass-Ceramic Capacitors with Simultaneously High Power and Energy Densities under Practical Charge–Discharge Conditions

Shang

Wei

et al. 2022

ACS Appl. Mater. Interfaces

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Developing dielectric capacitors with both a high power density and a high energy density for application in power electronics has been a long-standing challenge. Glass-ceramics offer the potential of retaining the high relative permittivity of ceramics and at the same time of exhibiting the high dielectric breakdown strength and fast charge/discharge rate of glasses, thus producing concurrently high power and energy densities in a single material. In this work, glass-ceramics are fabricated to achieve simultaneously high power and energy densities, high efficiency, and thermal stability by tuning the glass crystallization process via a suitable nucleating agent and a high oxygen partial pressure. Under the same practical charge−discharge test conditions, the asprepared glass-ceramics combine the high energy density of ceramics and ultrafast discharge rate of glasses, producing the highest power density among glass-and ceramic-based dielectric materials. This work demonstrates the significant potential of achieving both high power and energy densities in glass-ceramics by optimizing the glass crystallization process.

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“…The miniaturization leads to space and weight saving that is crucial in areas, such as automotive, aerospace, military power systems, and energy storage. Considering a harsh environment, it is important to note that the advances in wide bandgap semiconductor devices (e.g., SiC and GaN) have created new opportunities for energy efficient power conversion circuits operating at high temperatures [1], [2]. The most expensive passive component is usually a capacitor.…”

Section: Introductionmentioning

confidence: 99%

Application of Numerical Simulation for Metallized Film Capacitors Electrodes Design

et al. 2021

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Polymer film capacitors are widely used in modern power equipment, because of excellent volumetric characteristics in combination with high-voltage application ability. Using segmented electrodes of nanometer thickness increased the capacitor's performance and reliability because of the self-healing feature. In this paper, we present the results of the experimental investigation and numerical simulation of electrothermal destruction of the metallized film capacitors segmented electrodes during the self-healing process. The destruction processes were investigated for both a single gate and single segment, comprising four parallel gates connected to the segment. The numerical simulation was conducted by means of COMSOL Multiphysics software. The model takes into account the heat flow from metal layer to polymer film since it has significant influence on the destruction process. Based on a good agreement of experimental and numerical results, the simulation model was proposed for the real metallized film capacitor segmented electrodes design. The model allows evaluating the single segment isolating time during self-healing, the energy required for the isolating, effective value of segmented electrodes surface resistance.

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Glass Dielectrics in Extreme High‐Temperature Environment

Cited by 5 publications

References 18 publications

Dielectric materials for high‐temperature capacitors

Dielectric materials for high‐temperature capacitors

Glass-Ceramic Capacitors with Simultaneously High Power and Energy Densities under Practical Charge–Discharge Conditions

Application of Numerical Simulation for Metallized Film Capacitors Electrodes Design

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