Polymer dielectrics are crucial for use in electrostatic capacitors, owing to their high voltage resistance, high energy storage density, and ultrahigh reliability. …
High-power capacitors are highly demanded in advanced electronics and power systems, where rising concerns on the operating temperatures have evoked the attention on developing highly reliable high-temperature dielectric polymers. Herein, polyetherimide (PEI) filled with highly insulating Al2O3 (AO) nanoparticles dielectric …
However, high-temperature resistance is only a sufficient condition rather than a necessary condition, PEI films still suffer the server conduction loss at elevated temperature [23]. Generally, the conduction loss of polymer dielectric films can be divided into two categories, the one is charge excited-induced hopping conduction and the other …
Multiple reviews have focused on summarizing high-temperature energy storage materials, 17, 21-31 for example; Janet et al. summarized the all-organic polymer dielectrics used in capacitor dielectrics for high temperature, including a comprehensive review on new polymers targeted for operating temperature above 150 C. 17 Crosslinked …
An energy storage and release model considering the charge trapping effects is constructed by the authors. We simulate the high-temperature energy storage properties of polyimide nanocomposite …
Among them, the PEI with 50% of spirane units exhibited a high discharge energy density of 2.24 J cm −3 at 200 C and 350 MV m −1 and with a high discharge …
As a result, 0.75 wt% PMHT/PEI delivers an ultrahigh discharge energy density (U d) of 10.7 J cm −3 at an E b of 680 MV m −1 and at room temperature, and …
Similarly, high-temperature energy storage properties of all the nanocomposites dielectric films are much more excellent compared with PEI and c-PEI, as shown in Fig. 6 c. The U e of c-0.3 vol%-PEI attains 4.49 J/cm 3 and is 24.7% higher than that of c-PEI (3.60 J/cm 3 ) at 150 °C and 500 MV/m.
Polyetherimide (PEI) for high-temperature energy storage still face the critical problem of low discharged energy density. The dramatic increase in leakage …
Enhancing High-Temperature Energy Storage Performance of PEI-Based Dielectrics by Incorporating ZIF-67 with a Narrow Bandgap ACS Appl Mater Interfaces . 2023 Sep 6;15(35):41828-41838. doi: 10.1021/acsami.3c06778.
Noticeably, PEI-BNBTO_nfs with 3 vol% delivers a high U e of 5.23 J cm −3 above η of 90% at 150 C, which is significantly greater than the pristine PEI (2.10 J cm −3 at 150 C) and PEI-BTO_nfs ...
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 temperature resistance and energy …
The high throughput and easy processing of the PEI hybrid film makes it a potential choice for energy storage under harsh conditions. This work represents a route …
Research Article. Improved High-Temperature Energy Storage Performance of PEI Dielectric Films by Introducing an SiO 2 Insulating Layer. Tiandong …
On the other hand, the stable dielectric and energy storage performance of PTCBI/PEI blends at high temperature are expected because the PEI and PTCBI both exhibit the good heat stability. To verify these hypotheses, the dielectric behavior, polarization mechanism, energy storage properties, charge–discharge cycles and …
PEI (synthesized from A10 and B5), e.g., the PI-methyl refers to the structure formed by replacing the ether bond ... It is apparent that the high-temperature energy storage performance (U e and ...
The high T g above 150 C enables the PEI and PEI/PEEU blend polymers to stay in a glassy state at high temperatures and makes it possible to achieve stable …
Because it has excellence in high-temperature insulation properties, good processability, superior mechanical resistance and low cost [2,8,9]. Unfortunately, the high leakage current caused by high temperature and field leads to the U d …
DOI: 10.1021/acsami.3c06778 Corpus ID: 261214029 Enhancing High-Temperature Energy Storage Performance of PEI-Based Dielectrics by Incorporating ZIF-67 with a Narrow Bandgap. High‐temperature dielectric materials for capacitive energy storage are in ...