Significantly improved energy storage performance of polyetherimide-based dielectric composites via employing core-shell organic-semiconductor@BaTiO3 nanoparticles

被引:0
|
作者
Tan, Hao [1 ]
Zhong, Hao [1 ]
Deng, Liwen [1 ]
Zhou, Jinlong [1 ]
Xu, Ao [1 ]
Wu, Dang [2 ]
Chen, Sheng [1 ]
机构
[1] Xiangtan Univ, Coll Chem, Key Lab Polymer Mat & Applicat Technol Hunan Prov, Xiangtan 411105, Hunan, Peoples R China
[2] Guangdong Univ Petrochem Technol, Maoming 525000, Guangdong, Peoples R China
关键词
Core-shell structure; Polymer-based nanocomposites; Dielectric properties; Energy storage performance; Semiconductor; HIGH-TEMPERATURE; NANOCOMPOSITE; CONSTANT; DENSITY; SURFACE;
D O I
10.1016/j.jpowsour.2024.235888
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
With fast development of modern industries and electrical systems, polymer dielectrics are urgently demanded to have high discharged energy density (Ud) in elevated temperature. In this paper, novel core-shell poly [2((3,6,7,10,11-pentakis (hexyloxy) triphenylene-2-yl) oxy) ethyl methacrylate] (PHT) coated barium titanate nanoparticles (BT) (denoted as PHT@BT) are prepared, and then incorporate into polyetherimide (PEI) matrix via solution blending method. Semi-conductive organic shell layer can not only promote the dispersion and compatibility of BT nanoparticles but also construct deep trap. As a result, 0.3 wt% PHT@BT/PEI composites achieve maximal Ud of 7.62 J cm-3 at 641 MV m -1 and room temperature, which is 1.93 times that of pure PEI film (3.93 J cm-3 at 461 MV m-1 ). Importantly, the Ud of 4.86 J cm-3 is obtained at 150 degrees C. This work provides superior interfacial modifier for inorganic nanofiller, which is of great significance for the fabrication of polymer- based nanocomposites with superior U d .
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页数:11
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