Surface-modified barium titanate by MEEAA for high-energy storage application of polymer composites

High Voltage

Yanbin Shen¹  Shuhui Yu¹  Rong Sun¹  Suibin Luo¹  Ching-Ping Wong¹ 

[1] Center for Advanced Materials Research, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences;

关键词: barium compounds;    filled polymers;    nanoparticles;    nanocomposites;    nanofabrication;    coatings;    thin films;    permittivity;    surface-modified barium titanate nanoparticles;    high-energy storage application;    polymer composites;    2-[2-(2-methoxyethoxy)ethoxy]acetic acid;    dispersion;    ceramic fillers;    polymer matrix;    coating layer;    poly(vinylidene fluoride)-hexafluoropropene film composites;    permittivity;    discharged energy density;    discharge energy density;    nanocomposites;    electric field;   

DOI  :  10.1049/hve.2016.0066

来源: DOAJ

【 摘 要 】

In this study, 2-[2-(2-methoxyethoxy)ethoxy]acetic acid (MEEAA) was used to modify the surface of barium titanate nanoparticles (BT NPs) to enhance the compatibility and dispersion of the BT ceramic fillers in polymer matrix. A uniform coating layer with a thickness about 2 nm was formed on the surface of BT after modification. The poly(vinylidene fluoride)-hexafluoropropene [P(VDF-HFP)] composites filled with MEEAA-modified BT NPs achieved higher permittivity(∼13 at 3.0 vol% filler) and discharged energy density than that of the untreated BT filled composite. The maximum discharge energy density of 7.8 J/cm^3 was obtained in the nanocomposites with 3 vol% MEEAA-modified BT NPs at electric field of 425 kV/mm, which is 77% higher than that of 4.4 J/cm^3 of pure P(VDF-HFP) film at electric field of 420 kV/mm.

【 授权许可】

Unknown