Horizontally-oriented barium titanate@polydomine/polyimide nanocomposite films for high-temperature energy storage

被引：48

作者：

Yuan, Peimei ^{[1
]}

Xue, Ruixuan ^{[1
]}

Wang, Yan ^{[2
]}

Su, Yao ^{[1
]}

Zhao, Bo ^{[1
]}

Wu, ChenLi ^{[1
]}

An, Wen ^{[1
]}

Zhao, Weixing ^{[1
]}

Ma, Rong ^{[1
]}

Hu, Dengwei ^{[1
]}

机构：

[1] Baoji Univ Arts & Sci, Engn Res Ctr Titanium Based Funct Mat & Devices Un, Fac Chem & Chem Engn, Key Lab Funct Mat Baoji, 1 Hitech Avenue, Baoji 721013, Shaanxi, Peoples R China

[2] Northwest Univ, Coll Chem & Mat Sci, Shaanxi Key Lab Physico Inorgan Chem, Key Lab Synthet & Nat Funct Mol Chem,Minist Educ,D, Xian 710127, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2024年 / 662卷

基金：

中国国家自然科学基金;

关键词：

Polyimide; Barium titanate; Energy storage; Orientation distribution; Two-dimensional (2D); IMPROVED DIELECTRIC-PROPERTIES; POLYMER NANOCOMPOSITES; POLYIMIDE COMPOSITES; BREAKDOWN STRENGTH; BATIO3; DENSITY; NANOFIBERS; CONSTANT;

D O I：

10.1016/j.jcis.2024.02.109

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-temperature ceramics polymer dielectric nanocomposite materials have broad application prospects in energy storage. The barium titanate (BT) plays an important role as one of outstanding representative ceramics in the dielectric nanocomposite materials. However, there is little known for the effects of two-dimensional (2D) BT morphology and layout on the properties of high-temperature nanocomposite materials. Hence, 2D scale-like BT ceramic fillers were prepared from layered K0.8Li0.27Ti1.73O4 crystals as precursors using a combined solid-state and hydrothermal process. 2D scale-like BT@polydopamine (PDA) core-shell nanocomposites were prepared via coating PDA on the BT. BT@PDA/polyimide(PI) nanocomposite films were fabricated by horizontally oriented distribution of BT@PDA in the PI matrix. The BT@PDA/PI nanocomposite films exhibit a high energy density (3.34 J/cm3) and high charge-discharge efficiency (83.68 %) at 150 degrees C. It is currently the highest energy storage performance in the BT/PI nanocomposite films at 150 degrees C. The excellent properties are due to preventing upward breakdown of electrical pathways and promoting dispersion and entanglement of the electrical pathway routes. Additionally, strong electrostatic interactions between the different polymer chains (PDA and PI) restricts the movement of space charges. This work demonstrates that introducing horizontally oriented, organically shellmodified and 2D small -sized BT nanoparticles into a PI matrix is an effective method for improving energy storage performance.

引用

页码：1052 / 1062

页数：11

共 62 条

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