Premium
Enhanced energy storage of polyvinylidene fluoride‐based nanocomposites induced by high aspect ratio titania nanosheets
Author(s) -
Zhu Congcong,
Yin Jinghua,
Li Jialong,
Li Yanpeng,
Zhao He,
Yue Dong,
Pan Lin,
Wang Jimin,
Feng Yu,
Liu Xiaoxu
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50244
Subject(s) - polyvinylidene fluoride , materials science , nanocomposite , composite material , dielectric , energy storage , polarization (electrochemistry) , permittivity , fluoride , polymer , optoelectronics , inorganic chemistry , power (physics) , chemistry , physics , quantum mechanics
To enhance the discharge energy density ( U e ) of polyvinylidene fluoride (PVDF), two‐dimensional (2D) titania nanosheets (TNSs) with high aspect ratio were introduced into PVDF. The results show that the TNSs are uniformly dispersed in matrix and the existence of matrix‐filler interface is confirmed by small angle X‐ray scattering. Introducing of high aspect ratio TNSs is beneficial to enhance the concentration of polar β‐phase and interfacial polarization, which can improve the permittivity ( ε r ) of nanocomposites. Meanwhile, the shape of 2D TNSs plays an important role in enhancement of breakdown strength ( E b ). The ε r and E b of the nanocomposites are two significant factors of their high energy storage performance. Therefore, the U e increases to 0.32 J/cm 3 , which is 28% higher than that of pure PVDF (~0.25 J/cm 3 ). The energy efficiency of this typical nanocomposite is similar as that of pure PVDF (~90%). This work might provide a method of fabricating promising energy storage dielectric materials.