文献类型：期刊文献

英文题名：Poly(ether imide) Nanocomposites with BaTiO3@TiO2@SiO2 or BaTiO3@SiO2@TiO2 Fillers Improve Energy Storage Capacity and Dielectric Thermal Stability

作者：Zuo, Peiyuan[1];Jiang, Junhao[1];Wang, Ruoqi[1];Chen, Donglin[1];Lin, Jingyu[1];Chen, Yi[2];Wang, Xinhua[1];Zhuang, Qixin[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Adv Polymer Mat Shanghai, Shanghai 200237, Peoples R China;[2]Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China

年份：2023

卷号：6

期号：19

起止页码：18381

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20234414985719);WOS:【SCI-EXPANDED(收录号:WOS:001068455000001)】；

基金：All authors are grateful to the financial supportfrom the National Natural Science Foundation of China (52073091, 52303083,52373073, and 2171086), Shanghai Pujiang Program (22PJ1402500), ShanghaiRising-Star Program (21QA1403900), and the Key Laboratory of AdvancedPolymer Materials of Shanghai.

语种：英文

外文关键词：core-shell structures; dielectric nanocomposites; energy storage density; gradient; antigradient; dielectric thermal stability

摘要：The core-shell structures have been widely accepted as an effective way to adjust the dielectric properties of polymer-based nanocomposites. However, there rarely exist systematic studies, considering the core-double-shell sequence comparison (gradient or antigradient permittivity) on comprehensive dielectric and thermal stability properties for linear PEI polymer-based nanocomposites. To fill this gap, we herein successfully fabricated a series of BaTiO3@TiO2@SiO2/PEI and BaTiO3@SiO2@TiO2/PEI nanocomposites, the energy storage density of which can reach 5 and 5.41 J/cm(3) with 10 vol % of filler, respectively. The resulting energy storage capacities are 2.7 and 2.85 times that for pure PEI. The BaTiO3@TiO2@SiO2/PEI nanocomposites possess excellent breakdown strength (similar to 470 MV/m) and low dielectric loss (similar to 0.008) with a 5 vol % of filler. Both the core-double-shelled nanocomposites exhibit excellent dielectric stability over a wide temperature range from RT to 150 degrees C compared to BaTiO3/PEI and BaTiO3@SiO2/PEI. The electric field simulation and DFT calculation results are highly consistent with the analysis of experimental data. This innovative work lays a solid foundation for further investigation on core-double-shell-structured dielectrics.