Recent progress in polymer dielectrics containing boron nitride nanosheets for high energy density capacitors

High Voltage

Yao Zhou¹  Lulu Ren¹  He Li¹  Bin Yao¹  Qing Wang¹ 

[1] The Pennsylvania State University;

关键词: nanofabrication;    permittivity;    wide band gap semiconductors;    electric strength;    filled polymers;    thermal stability;    dielectric losses;    electrical conductivity;    capacitance;    nanocomposites;    electric breakdown;    boron compounds;    thermal conductivity;    thin film capacitors;    reviews;    hexagonal boron nitride nanosheets;    two-dimensional nanomaterials;    surface areas;    aspect ratios;    electrical strength;    mechanical modulus;    chemical stability;    multifunctional fillers;    dielectric polymer nanocomposites;    review;    bn-containing polymer nanocomposites;    high energy density film capacitors;    general synthetic approaches;    structure-property correlation;    optimised dielectric properties;    high dielectric constant fillers;    electric displacement;    design concept;    electrical conduction;    breakdown strength;    dielectric capacitors;    thermal conductivity;    thermal stability;    capacitive energy storage;    graphitic-like layered nanostructures;    rational structural design;    capacitive performances;    charge-discharge efficiency;    bn;   

DOI  :  10.1049/hve.2020.0076

来源: DOAJ

【 摘 要 】

Hexagonal boron nitride nanosheets (BNNSs) are two-dimensional nanomaterials with graphitic-like layered nanostructures, high surface areas, and large aspect ratios. Owing to their excellent thermal conductivity, electrical and mechanical strengths, BNNSs are emerging as multifunctional fillers in polymer dielectrics. In this article, the authors review the recent progress in the BN-containing polymer nanocomposites designed for high-performance film capacitors. While general synthetic approaches to BNNSs and polymer/BNNS nanocomposites are summarized, particular attention is placed on structure-property correlation and rational structural design of the composites with optimized dielectric properties and capacitive performances. In stark contrast to the polymer composites employing high dielectric constant fillers to enhance the electric displacement, a new design concept based on the utilization of BNNSs with a wide bandgap to impede electrical conduction and consequently improve breakdown strength and charge-discharge efficiency of the polymer composites, is highlighted. The significance of developing dielectric capacitors with desirable thermal conductivity and thermal stability to ensure their robust and efficient operation is emphasized. The merits and challenges regarding the existing polymer dielectrics containing BNNSs for energy storage are identified. An outlook for future research opportunities and engineering applications is also presented in this review.

【 授权许可】

Unknown