Substantially enhanced high-temperature capacitive performance in BOPP films coating with a magnetic inorganic nanolayer.

The utilization of biaxially oriented polypropylene (BOPP) in commercial film capacitors has gained increasing prominence in recent years, primarily due to its advanced ultra-low dielectric loss and cost-effectiveness. In order to mitigate the degradation of the capacitive performance of BOPP films induced by the metal-electrode charge injection under extreme operational conditions, this study introduces a simple, efficient, and environmentally benign modification method for growing CoFeO nanolayers onto the surface of BOPP films magnetron sputtering. The wide bandgap CoFeO nanolayers can increase the potential barrier height between the metal electrode and dielectric films of the composite dielectrics.

Hydrothermally Synthesized ZnMnO@GO Cathode Enhances Zinc-Ion Kinetics and Cycling Stability for Aqueous Zinc-Ion Batteries.

Spinel-type ZnMnO has been identified as a cathode that demonstrates considerable potential material for zinc-ion batteries (ZIBs). In this study, the synthesis of ZnMnO@GO composite material was conducted using a hydrothermal method. The electrochemical performance of the composite material was found to be significantly enhanced, a phenomenon that was primarily ascribed to the substantial specific surface area and exceptional conductivity of graphene, which improved the diffusion kinetics of zinc ions at the electrode-electrolyte interface.

Enhancement of High-Temperature Energy Storage in PEI Dielectrics Through Dual-Function Scattering/Trap Layers.

Dielectric capacitors are essential for the effective and dependable performance of new energy electronic circuits. However, energy storage dielectric materials still face significant challenges, including low energy density and poor thermal stability. In this study, polyetherimide (PEI), a high-temperature-resistant material, is selected as the subject of investigation.

Enhanced thermal conductivity of epoxy resin by incorporating three-dimensional boron nitride thermally conductive network.

Packaging insulation materials with high thermal conductivity and excellent dielectric properties are favorable to meet the high demand and rapid development of third generation power semiconductors. In this study, we propose to improve the thermal conductivity of epoxy resin (EP) by incorporating a three-dimensional boron nitride thermally conductive network. Detailedly, polyurethane foam (PU) was used as a supporter, and boron nitride nanosheets (BNNSs) were loaded onto the PU supporter through chemical bonding (BNNS@PU).

Research on molecular dynamics and electrical properties of high heat-resistant epoxy resins.

In order to prepare highly heat-resistant packaging insulation materials, in this paper, bismaleimide/epoxy resin (BMI/EP55) composites with different contents of BMI were prepared by melt blending BMI into amino tetrafunctional and phenolic epoxy resin (at a ratio of 5:5). The microstructures and thermal and electrical properties of the composites were tested. The electrostatic potential distribution, energy level distribution, and molecular orbitals of BMI were calculated using Gaussian.

Achieving synergistic improvement in dielectric and energy storage properties at high-temperature of all-organic composites physical electrostatic effect.

In response to the increasing demand for miniaturization and lightweight equipment, as well as the challenges of application in harsh environments, there is an urgent need to explore the new generation of high-temperature-resistant film capacitors with excellent energy storage properties. In this study, we report an all-organic composite system based on two polymers with similar densities and high glass transition temperatures, achieving a synergistic effect of dielectric constant and breakdown strength. The preparation of the composite is simple, overcoming the challenge of dispersing nanoparticles in traditional organic-inorganic systems.

Utilizing Linear Polymers to Optimize Remanent Polarization and Construct Multilayer Interfaces to Obtain High-Efficient Poly(vinylidene fluoride)-Based Energy-Storage Composites.

Polyvinylidene fluoride (PVDF) has been widely studied as a ferroelectric polymer for energy dielectric applications. However, high-polarization PVDF has a low-efficiency issue, owing to high residual polarization. This study introduces highly insulating, low-loss linear polycarbonate (PC) into PVDF-based dielectrics.

Enhancement of Energy Storage Performance of PMMA/PVDF Composites by Changing the Crystalline Phase through Heat Treatment.

In today's contemporary civilization, there is a growing need for clean energy focused on preserving the environment; thus, dielectric capacitors are crucial equipment in energy conversion. On the other hand, the energy storage performance of commercial BOPP (Biaxially Oriented Polypropylene) dielectric capacitors is relatively poor; hence, enhancing their performance has drawn the attention of an increasing number of researchers. This study used heat treatment to boost the performance of the composite made from PMAA and PVDF, combined in various ratios with good compatibility.

Ultrahigh energy storage performance of all-organic dielectrics at high-temperature by tuning the density and location of traps.

Improving the tolerance of flexible polymers to extreme temperatures and electrical fields is critical to the development of advanced electrical and electronic systems. Suppressing carrier movement at high temperatures is one of the key methods to improve the high-temperature charging and discharging efficiency. In this work, a molecular semiconductor (ITIC) with high electron affinity energy is blended into the promising polymer polyetherimide (PEI).

Polymer dielectric films exhibiting superior high-temperature capacitive performance by utilizing an inorganic insulation interlayer.

With the rapid development of next-generation electrical power equipment and microelectronics, there is an urgent demand for dielectric capacitor films which can work efficiently under extreme conditions. However, sharply increased electrical conduction and drastically degrading electric breakdown strength are inevitable at elevated temperatures. Herein, a facile but effective method is proposed to improve high temperature capacitive performance.

Excellent Energy Storage Performance of Ferroconcrete-like All-Organic Linear/Ferroelectric Polymer Films Utilizing Interface Engineering.

Ferroelectric polymers are regarded as the preferred material in dielectric energy storage devices because of their high dielectric constant. However, their relatively low breakdown strength and efficiency restrict their practical application. This work combines coaxial spinning and hot pressing to compound the highly insulating linear poly(methyl methacrylate) (PMMA) and ferroelectric poly(vinylidene fluoride) (PVDF) to obtain a PMMA/PVDF all-organic film with a ferroconcrete-like structure.

Improved Energy Storage Performance of All-Organic Composite Dielectric via Constructing Sandwich Structure.

Improving the energy storage density of dielectrics without sacrificing charge-discharge energy storage efficiency and reliability is crucial to the performance improvement of modern electrical and electronic systems, but traditional methods of doping high-dielectric ceramics cannot achieve high energy storage densities without sacrificing reliability and storage efficiency. Here, an all-organic energy storage dielectric composed of ferroelectric and linear polymer with a sandwich structure is proposed and successfully prepared by the electrostatic spinning method. Additionally, the effect of the ferroelectric/linear volume ratio on the dielectric properties, breakdown, and energy storage is systematically studied.

Designing coexisting multi-phases in PZT multilayer thin films: an effective way to induce large electrocaloric effect.

Coexisting multi-phases in PbZr Ti O multilayer thin films were successfully fabricated using the sol-gel method. The microstructure and electrical of the multilayer films with different growth sequences, including the up multilayer films and down multilayer films, have been systematically investigated. The results indicate that a large electrocaloric effect (ECE) is obtained at the temperatures much below the Curie temperature.

Optimizing sandwich-structured composites based on the structure of the filler and the polymer matrix: toward high energy storage properties.

Polymer-based energy storage materials have been widely applied in the energy storage industry, such as in the hybrid electric vehicle and power-conditioning equipment, due to their moderate energy density and ultrafast charging/discharging speed. Accordingly, the improvement of the energy storage density of polymer matrix composites has become the focus of current research. In this study, different fillers (, 0.

Study on Nonlinear Conductivity of CCTO/EPDM Rubber Composites.

Researches of the theories and application of polymer composites with nonlinear conductivity are useful for dealing with the nonuniform electrical fields widely existing in the cable accessory insulation. In the present work, we fabricated CCTO (CaCu₃Ti₄O)/EPDM (Ethylene Propylene Diene Monomer) composites and investigated their breakdown strength, dielectric and nonlinear conductivity properties in detail; the microstructures of fillers and composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction. CCTO particles are uniformly dispersed in CCTO/EPDM composites, and the composites showed nonlinear conductivity with electric field changes.