scholarly journals Interface Modulation of Core-Shell Structured BaTiO3@polyaniline for Novel Dielectric Materials from Its Nanocomposite with Polyarylene Ether Nitrile

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1378 ◽  
Author(s):  
Yong You ◽  
Yajie Wang ◽  
Ling Tu ◽  
Lifen Tong ◽  
Renbo Wei ◽  
...  

The core-shell structured polyaniline-functionalized-BaTiO3 (BT@PANI) nanoparticles with controllable shell layer thicknesses are developed via in-situ aniline polymerization technology and characterized in detail. The results prove that the PANI shell layer with the adjustable and controllable thicknesses of 3–10 nm are completely stabilized on the surface of the BaTiO3 core. In addition, the BT@PANI nanoparticles are regarded as the hybrid nanofillers to prepare PEN/BT@PANI nanocomposite films with a PEN matrix. The research results indicate that the surface functionalized nanoparticles facilitate the compatibility and dispersibility of them in the PEN matrix, which improves the properties of the PEN/BT@PANI nanocomposites. Specifically, the PEN/BT@PANI nanocomposites exhibit thermal stability, excellent permittivity-frequency, and dielectric properties-temperature stability. Most importantly, the energy density of nanocomposites is maintained at over 70% at 180 °C compared with that at 25 °C. All these results reveal that a new way to prepare the high-performance PEN-based nanocomposites is established to fabricate an energy storage component in a high temperature environment.

2021 ◽  
pp. 095400832110149
Author(s):  
Weixi Zhang ◽  
Yuan Kai ◽  
Jian Lin ◽  
Yumin Huang ◽  
Xiaobo Liu

Polyarylene ether nitrile (PEN) based composites combined MXene, Polydopamine (PDA) and barium titanate (BaTiO3, BT) with “core-shell”-like structure were developed successfully in this work, and then incorporating into the PEN matrix to form the PEN/MXene&PDA@BT nanocomposite films through the solution casting method. The novel MXene&PDA@BT nanoparticles were characterized by the Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Then the structure and properties of the obtained PEN/MXene&PDA@BT nanocomposites are studied in detail. The results show that the modification of PDA improved the dispersibility of MXene nanosheets and BT nanoparticles in the PEN matrix, resulting in the enhancement of mechanical and dielectric properties. The research results reveal that when the content of MXene&PDA@BT is 1%, the tensile strength and modulus reached 114.15 MPa and 3015.74 MPa, respectively. Most important, the PEN based nanocomposites exhibit the outstanding frequency in dependent dielectric properties, including high dielectric constant (5.08 at 1 kHz) and low dielectric loss (0.0178 at 1 kHz). These results indicate that the PEN/MXene&PDA@BT composite films are greatly significant for using as the constructing high performance dielectric materials.


ChemSusChem ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4786-4790 ◽  
Author(s):  
Jinwen Yin ◽  
Yi Shen ◽  
Chang Li ◽  
Chenyang Fan ◽  
Shixiong Sun ◽  
...  

2019 ◽  
Vol 7 (38) ◽  
pp. 21759-21765 ◽  
Author(s):  
Duo Chen ◽  
Mengjie Lu ◽  
La Li ◽  
Dong Cai ◽  
Junzhi Li ◽  
...  

Core–shell structured NiMoO4@NiS2/MoS2 nanowires are fabricated via a novel facile in situ sulfurization method and applied in a high performance asymmetric supercapacitor.


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