Past and future on nanodielectrics

Abstract

Flexible polymer-matrix nanodielectrics have recently been attracting more attention in the fields of frontier research internationally since the beginning of the 21st century. It would accelerate a technical reformation for the applications in new energies, bioscience and biomedical engineering, artificial intelligence, electronic skin, wearable electronic clothing, Internet of things, and electrical insulation. This review summarises the recent development and achievements of nanodielectrics, including space charge suppression, high energy density storage, partial discharge resistance, non-linear field grading properties, high thermal conductivity, and future applications in biomedical area. Special attention is given to two representative interface models that are the Lewis's diffusion electrical double-layer model and Tanaka's multi-core model. At last, some issues related to the technology of nanodielectrics have also been discussed.

Improvements of dielectric properties and energy storage performances in BaTiO3/PVDF nanocomposites by employing a thermal treatment process

“…Film capacitors are the indispensable components in many electronic devices, vehicles and high-voltage electric systems. [1][2][3] However, the low permittivity of dielectric film hinders the further development of film capacitors. In recent years, adding high-permittivity (high-kÞ nanofillers such as TiO 2 , BaTiO 3 , CaCu 3 Ti 4 O 12 etc.…”

Thermal, electrical, and mechanical properties of addition‐type liquid silicone rubber co‐filled with Al2O3 particles and BN sheets

“…For polymer-based composites, the different characteristics of material are closely related to the dispersion and interfacial quality of the filler in the matrix. [25][26][27][28][29][30] In order to investigate the interfacial quality in the polymer composites, the fresh fracture surfaces of addition-type liquid silicone rubber composites were observed by SEM. The interfacial and dispersion quality of different filler in matrix of the ALSR Sample 1, 3, 5 and 7 are shown in Figure 1.…”

Effect of trap level density on breakdown strength and space charge distribution of polypropylene/low‐density polyethylene composites

“…Space charge accumulation is another problem that needs to be paid attention to. Polymer dielectric materials can capture charge carriers to form space charge under high DC voltages which will greatly distort electric field distribution in materials and directly affect insulation aging and breakdown properties . It has become an important restricted factor for HVDC cable development.…”