Open AccessSurface‐modified barium titanate by MEEAA for high‐energy storage application of polymer composites
Author(s) -
Shen Yanbin,
Luo Suibin,
Yu Shuhui,
Sun Rong,
Wong ChingPing
Publication year - 2016
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve.2016.0066
Subject(s) - materials science , barium titanate , composite material , nanocomposite , polymer , ceramic , surface modification , composite number , nanoparticle , titanate , coating , chemical engineering , nanotechnology , engineering
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.