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Enhanced energy density in cellulose doped polyimide-based all …
The growing demand for electronic devices has induced a significant requirement for high energy density capacitors. In this investigation, we introduced small groups of cyanoethyl cellulose (CEC) into a polyimide (PI) substrate to create all organic CEC/PI composite films for high energy density capacitor applications. Due to the large dipole moment in C–CN …
Types of Wound Film Capacitors
Polyimide or Kapton* Capacitors are typically used in extremely high temperature applications, up to 250 C. The electrical characteristics are average, and the dielectric constant (k) of 3.4 is close to that of Polyester. Typically, polyimide as a capacitor dielectric is typically combined with a discrete foil.
Metal-organic Framework/Polyimide composite with enhanced …
DOI: 10.1016/j.cej.2021.132228 Corpus ID: 239145184; Metal-organic Framework/Polyimide composite with enhanced breakdown strength for flexible capacitor @article{Li2022MetalorganicFC, title={Metal-organic Framework/Polyimide composite with enhanced breakdown strength for flexible capacitor}, author={Yanpeng Li and Jinghua …
Polyimide complexes with high dielectric performance: toward polymer film capacitor …
Novel polyimide–copper complexes (PICuCs) with a high dielectric constant of up to 133 were prepared by polymerization, complexation and imidization of a newly synthesized bipyridine-containing diamine monomer. The PICuCs showed high dielectric constant because of the enhanced electronic depolarization. Moreover, the PICuCs …
Metal-organic Framework/Polyimide composite with enhanced …
The permittivity (ε r) and loss tangent (tanδ) as a function of frequency for PI and ZIF-8/PI composites were displayed in Fig. 1 D.As the applied electric field frequency increases, ε r of composite decreases slightly, which is a typical dielectric relaxation phenomenon. ZIF-8/PI composites exhibit higher ε r than PI, for example, at 10 2 Hz, the …
Polyimide Dielectrics with Cross-linked Structure for High-Temperature Film Capacitors …
DOI: 10.1016/j.mtener.2022.101243 Corpus ID: 255654704 Polyimide Dielectrics with Cross-linked Structure for High-Temperature Film Capacitors @article{Wu2023PolyimideDW, title={Polyimide Dielectrics with Cross-linked Structure for High-Temperature Film Capacitors}, author={Zhiqiang Wu and Yiwen Peng and Ying …
Sulfonyl‐Containing Polyimide Dielectrics with Advanced Heat Resistance and Dielectric Properties for High‐Temperature Capacitor …
Polymer dielectrics, with advanced dielectric properties and heat resistance, are critical for high-temperature capacitors in various applications. However, the high performance of heat resistance and dielectric properties are quite difficult to achieve all together due to ...
Highly stable lithium ion capacitor enabled by hierarchical polyimide derived carbon microspheres combined …
Lithium ion capacitors (LICs), which combine the merits of both lithium ion batteries and supercapacitors, have recently attracted considerable attention. However, LICs generally use different materials and synthesis routes for the cathode and anode, resulting in a complicated process and high production cos
Polyimide-based Integrated Transformers and Capacitors
A technology for polyimide-based micro-transformers and capacitors fabrication and the relates simulation modelling platform are presented in this paper. A thick polyimide layer sandwiched between two gold electrodes provides the core of this new architecture, whose target is to withstand a peak voltage of at least 12 kVp. Following simulation outcome, …
Polyimides as High Temperature Capacitor Dielectrics
Researc hers ha ve achiev ed some progress in dev eloping polyimides for capacitor. dielectrics targ eted for operating tem perature abo ve 150°C, but there is still major . room f or impro vement.
High-Temperature Capacitor Polymer Films | Journal of ...
Film capacitor technology has been under development for over half a century to meet various applications such as direct-current link capacitors for transportation, converters/inverters for power electronics, controls for deep well drilling of oil and gas, direct energy weapons for military use, and high-frequency coupling circuitry. The biaxially …
A hybrid sodium-ion capacitor with polyimide as anode and polyimide ...
The polyimide-derived activated carbons with highly accessible specific surface area can retain the original microflower-like nanosheet morphology of the polyimide precursor. The hybrid sodium-ion capacitors using polyimide as anode and polyimide-derived activated carbon as . Acknowledgements
Wide temperature polyimide/ZrO2 nanodielectric capacitor film …
In this letter, wide temperature dielectric properties and corona resistance of Upilex-S ® polyimide (PI) films filled with Zirconium dioxide (ZrO 2) nanoparticles were investigated. ZrO 2 / PI nanodielectrics exhibited the stable dielectric properties, high energy density and high charge-discharge efficiency below 300 ° C .Testing of corona resistance …
A hybrid sodium-ion capacitor with polyimide as anode and polyimide …
A hybrid sodium-ion capacitor fabricated with the polyimide as anode and the polyimide-derived carbon as cathode can be operated at a voltage of 4.2 V, delivering an energy density of 66 Wh kg −1 at power density of …
The scalable and high performance polyimide dielectrics …
Polyimide with an alicyclic structure was prepared for capacitor energy storage. • High bandgap width and weak charge transfer complex improve energy storage property. • Conductive and breakdown mechanism were investigated at high temperature. • Discharge energy density of 4.63 J cm −3 was obtained at room temperature. •
Multi-layered boron nitride/polyimide high temperature capacitor …
DOI: 10.1016/j.mtener.2022.101093 Corpus ID: 250540193 Multi-layered boron nitride/polyimide high temperature capacitor dielectric film @article{Zhang2022MultilayeredBN, title={Multi-layered boron nitride/polyimide high temperature capacitor dielectric film ...
Multi-layered boron nitride/polyimide high-temperature capacitor ...
However, such polymers, for example, polyimide (PI, T g ≈ 360 °C), polyetherimide (PEI, ... For capacitor dielectric film, one of the factors limiting the discharge energy density is the maximum electric field that the dielectric film can load [17].
High-temperature polyimide dielectric materials for energy storage ...
Polyimide (PI) turns out to be a potential dielectric material for capacitor applications at high temperatures. In this review, the key parameters related to high …
Excellent Polyimide Dielectrics Containing Conjugated ACAT for …
In order to meet the requirements of polymer dielectric materials for high thermal stability and excellent dielectric properties in the application of high-temperature film capacitors, a series of polyimide (PI) films are fabricated by introducing a self-synthesized aniline trimer (ACAT) with a conjugated structure in this work.
Rationally Designed Polyimides for High-Energy Density Capacitor Applications
Development of new dielectric materials is of great importance for a wide range of applications for modern electronics and electrical power systems. The state-of-the-art polymer dielectric is a biaxially oriented polypropylene (BOPP) film having a maximal energy density of 5 J/cm3 and a high breakdown field of 700 MV/m, but with a limited …
Development of high dielectric polyimides containing bipyridine units ...
These polyimides possessed high dielectric constant of the as-synthesized polyimides can be up to7.2, the dielectric loss was < 0.04, and the energy density was up to 2.77 J/cm 3. Furthermore, the polyimides exhibited high glass transition temperature (Tg) of 275–320 °C and tensile strengths of 175–221 MPa. These obtained polyimides ...
High dielectric constant polyimide for high-temperature film capacitor …
： Polymer film capacitors do not meet the increasing demand of high-temperature (> 125 degrees C) applications with the rapid development of new energy. In particular, few polymer dielectrics can operate at high temperatures (> 250 degrees C). In order to ...
Sulfonyl‐Containing Polyimide Dielectrics with Advanced Heat Resistance ...
Sulfonyl-Containing Polyimide Dielectrics with Advanced Heat Resistance and Dielectric Properties for High-Temperature Capacitor Applications. Hui Tong, ... Polymer dielectrics, with advanced dielectric properties and heat resistance, are critical for high-temperature capacitors in various applications. However, the high …
High energy aqueous sodium-ion capacitor enabled by polyimide electrode and high-concentrated electrolyte …
An aqueous sodium-ion hybrid capacitor is assembled by using the electrolyte and could be operated at a large voltage of 2.0 V, in which aromatic polyimide (PI) is used as anode material and ultrahigh specific surface PI derived porous carbon microspheres as
Polyimide Dielectrics with Cross-linked Structure for High …
DOI: 10.1016/j.mtener.2022.101243 Corpus ID: 255654704; Polyimide Dielectrics with Cross-linked Structure for High-Temperature Film Capacitors @article{Wu2023PolyimideDW, title={Polyimide Dielectrics with Cross-linked Structure for High-Temperature Film Capacitors}, author={Zhiqiang Wu and Yiwen Peng and Ying …
3M™ Polyimide Film Electrical Tape 1218 | 3M United States
3M™ Tape 1218 is an electrical tape that''s suitable for high temperature, electrical applications that require thin, insulating material for wrapping capacitors, coils and harnesses. This tape has a polyimide film backing that offers exceptional heat and solvent resistance. This tape is 600V rated and withstands temperatures up to 356 °F (180 °C).
Excellent Polyimide Dielectrics Containing Conjugated …
In order to meet the requirements of polymer dielectric materials for high thermal stability and excellent dielectric properties in the application of high-temperature film capacitors, a series of polyimide …
Metal-organic Framework/Polyimide composite with enhanced breakdown strength for flexible capacitor
Here, we found that the Polyimide (PI)-based composites dielectrics using ZIF-8 nanoparticles (a typical MOFs) as fillers exhibit significantly enhanced Young''s modulus and breakdown strength. The DC breakdown strength of the composites as high as 516.3kV/mm with only loading 1wt% ZIF-8, which is about 85% higher than those of PI (279.8kV/mm).
High temperature polyimide nanocomposites containing two …
Future electronic devices toward high integration and miniaturization demand reliable operation of dielectric materials at high electric fields and elevated temperatures. However, the electrical deterioration caused by Joule heat generation remains a persistent challenge to overcome. Here, the solution-processed polyimide (PI) …
Polyimides as High Temperature Capacitor Dielectrics …
Nearly five decades of effort has focused on identifying and developing new polymer capacitor films for higher-than-ambient temperature applications, but simultaneous demands of ...