This review provides a detailed overview on the latest developments in the design and control of the interface in polymer based composite dielectrics for energy storage applications. The methods employed for interface design in composite systems are described for a variety of filler types and morphologies, along with novel approaches employed to build hierarchical interfaces for multi-scale control of properties. Efforts to achieve a close control of interfacial properties and geometry are then described, which includes the creation of either flexible or rigid polymer interfaces, the use of liquid crystals and developing ceramic and carbon-based interfaces with tailored electrical properties. The impact of the variety of interface structures on composite polarization and energy storage capability are described, along with an overview of existing models to understand the polarization mechanisms and quantitatively assess the potential benefits of different structures for energy storage. The applications and properties of such interface-controlled materials are then explored, along with an overview of existing challenges and practical limitations. Finally, a summary and future perspectives are provided to highlight future directions of research in this growing and important area.

/pdf/interface-design-for-high-energy-density-polymer-461ds0csrx.pdf

Interface design for high energy density polymer nanocomposites

Advanced dielectric polymers for energy storage

/pdf/ternary-polymer-nanocomposites-with-concurrently-enhanced-56ww625n73.pdf

Ternary polymer nanocomposites with concurrently enhanced dielectric constant and breakdown strength for high-temperature electrostatic capacitors

Polymer dielectrics are ubiquitous in advanced electric energy storage systems. However, the relatively low operating temperature significantly menaces their widespread application at high temperatures, such as for hybrid vehicles and aerospace power electronics. Spider silk, a natural nanocomposite comprised of biopolymer chains and crystal protein nanosheets combined by multiple interfacial interactions, exhibits excellent mechanical properties even at elevated temperatures. Inspired by the hierarchical nanostructure of spider silk, poly(aryl ether sulfone) is anchored to the surface of wide bandgap artificial nanosheets to prepare the nanocomposites with nanoconfinement effect. The bioinspired strategy successfully improves the mechanical and electrical performances of the nanocomposite. Owing to the structural-enabled enhancements, the nanocomposites exhibit excellent breakdown strength and electrical energy storage performance at high temperatures. In detail, giant discharged energy density (2.7 J cm-3 ) and high charge-discharge efficiency (>90%) are simultaneously achieved at 150 °C and 400 MV m-1 . Notably, under 500 MV m-1 , the discharged energy density reaches 4.2 J cm-3 , which is the record high discharged energy density among polymer-based dielectrics at 150 °C. This work demonstrates a viable strategy to design high-temperature polymer dielectrics by constructing nanoconfinement in the nanocomposites.

Bioinspired Polymer Nanocomposites Exhibit Giant Energy Density and High Efficiency at High Temperature

High dielectric and breakdown properties achieved in ternary BaTiO3/MXene/PVDF nanocomposites with low-concentration fillers from enhanced interface polarization

Two sets of thermal stable nanocomposites were fabricated by using engineering plastics poly(ether sulfone) (PES) as a matrix and phthalocyanine molecules (CuPc) or hyperbranched phthalocyanine (HCuPc)-coated barium titanate (BT) nanoparticles as fillers for high electric field and high-temperature dielectric applications. By side-by-side comparison, the hyperbranched coating is finely addressed for enhancing the dielectric response and breakdown strength of the composites. Specifically, BT–HCuPc/PES exhibits 40% lower dielectric loss and about 110% larger breakdown strength than BT–CuPc/PES. The addition of hyperbranched phthalocyanine may enhance the compatibility and dispersion of the ceramic fillers in the polymer matrix and reduces the charge carrier between the filler and matrix. Meanwhile, high dielectric constant, high breakdown, and low dielectric loss are well-maintained in the composites filled with hyperbranched phthalocyanine-modified BT from room temperature to 150 °C. The discharged energy ...

High- k Polymer Nanocomposites Filled with Hyperbranched Phthalocyanine-Coated BaTiO3 for High-Temperature and Elevated Field Applications.

Crosslinked poly (aryl ether ketone)/boron nitride nanocomposites containing a stable chemical bonding structure as high temperature dielectrics

High-performance piezo-damping materials based on CNTs/BaTiO3/F-PAEK-b-PDMS under high temperature steam conditions

The invention discloses a crosslinking type polyether sulphone base dielectric composite material and a preparation method and application thereof. The method adopts polyether sulphone with the good thermal and mechanical properties and active functional groups (allyl lateral groups) as a base material of a polymer, meanwhile, inorganic nano ceramic particles are adopted as inorganic nanofiller, organic functionalization modification is performed on the surface of the nanofiller, benzocyclobutene is introduced, inorganic nano ceramic particles with reactable functional groups and core shell structures are formed and adopted as crosslinking points to be subjected to a crosslinking reaction with the polyether sulphone polymer with the active functional groups, a three-dimensional network structure is formed, and the crosslinking type polyether sulphone base dielectric composite material with good heat resistance and flexibility and high energy storage density is prepared. The prepared polyether sulphone base dielectric composite film has a high dielectric constant and the wide temperature application range, meanwhile, the breakdown field strength is obviously improved, and thereforethe high energy storage density under high temperature is obtained.

Crosslinking type polyether sulphone base dielectric composite material and preparation method and application thereof

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High- k Polymer Nanocomposites Filled with Hyperbranched Phthalocyanine-Coated BaTiO3 for High-Temperature and Elevated Field Applications.

Crosslinked poly (aryl ether ketone)/boron nitride nanocomposites containing a stable chemical bonding structure as high temperature dielectrics

High-performance piezo-damping materials based on CNTs/BaTiO3/F-PAEK-b-PDMS under high temperature steam conditions

Crosslinking type polyether sulphone base dielectric composite material and preparation method and application thereof