High-temperature polyimide dielectric materials for
Compared with supercapacitors and lithium-ion batteries, dielectric capacitors store and release energy through local dipole cyclization, which enables rapid charge and discharge rates (high power density).1,2
Flexible HfxZr1-xO2 Thin Films on Polyimide for Energy Storage
Abstract: Flexible energy-storage capacitor has attrac- ted great interest on account of the rapid development of the combination of intelligent systems and flexible electronics. In this work, we
Polyimide-Based Composite Films with Largely
Accordingly, functionalized with BT NPs in the outer layers offering superior permittivity and BNNSs in the central layer impeding the charge injection from electrodes, the properly designed sandwich-structured polymer
Dielectric polymers for high-temperature capacitive
Polymers are the preferred materials for dielectrics in high-energy-density capacitors. The electrification of transport and growing demand for advanced electronics require polymer dielectrics capable of operating
Achieving low dielectric loss and high energy density of polyimide
Polyimide (PI) possesses high heat resistance and low dielectric loss, but exhibits low dielectric constant (k) and energy storage density, which constrains its further application
Janus composite film comprising metal–organic framework/polyimide
In order to prepare polymer dielectric materials with high energy storage density, a series of polyimide (PI) based Janus composite films were prepared by metal–organic
Scalable Polyimide‐Organosilicate Hybrid Films for
At 200 °C, the hybrid film exhibits concurrently an ultrahigh discharged energy density of 3.45 J cm −3 and a high gravimetric energy density of 2.74 J g −1, with the charge-discharge efficiency >90%, far exceeding those
Superior dielectric energy storage performance for high
The large optical bandgap (∼4.6 eV) and high T g (∼277 °C) enable the alicyclic polyimide film to deliver a discharged energy density of ∼1.8 J/cm 3 at 150 °C with an
Effect of monomer structure on energy storage characteristics of
When trifluoromethyl groups are added into the dianhydride part, the breakdown strength of the polyimide film is reduced thus the energy storage density is reduced.But the introduction of
6 FAQs about [Polyimide energy storage film]
Why is polyimide used in high-temperature energy storage?
Polyimide (PI) is considered one of the most important dielectric materials that can be applied to the high-temperature energy storage field due to its excellent mechanical properties, reasonable dielectric loss, and high breakdown strength.
Can multilayer structures be applied to dielectric polymer composite films at high temperature?
Notably, the energy storage performance of trilayer composite film at high temperature is far superior to the reported high-temperature polymer dielectric films. This work demonstrates the promising potential of multilayer structures applied to dielectric polymer composite films at high temperatures. 1. Introduction
Does trilayer composite film improve energy storage performance of polymer dielectric films?
It is further revealed that the trilayer composite film with the BNNS outer layers is favourable for reducing the conduction loss and improving the high-temperature energy storage performance of the polymer films. As shown in Fig. 7, the energy storage performance of the currently reported polymer dielectric films is compared with t-BPB-8 film.
Are polyimide dielectric capacitors a good energy storage material?
As far as polyimide materials are concerned, although various polyimide dielectric materials with excellent energy storage characteristics have been developed from the perspective of monomers and composites, it is still necessary to rely on innovative ideas to develop polyimide dielectric capacitors with good comprehensive performance.
Can polymer-based multilayer composites improve energy storage density?
In recent years, the design of polymer-based multilayer composites has become an effective way to obtain high energy storage density. It was reported that both the dielectric constant and breakdown strength can be enhanced in the P (VDF-HFP)-BaTiO 3 multilayer composites .
Is Pi a high-temperature polymer?
PI is a high-temperature polymer that has been widely studied by researchers for its excellent thermal stability. However, the energy storage efficiency and breakdown strength of pure PI would reduce obviously in a high temperature environment due to thermal accumulation and large conduction loss.