An ultrahigh discharged energy density achieved in an inhomogeneous PVDF dielectric composite filled with 2D MXene nanosheets via interface engineering

2018 ◽  
Vol 6 (48) ◽  
pp. 13283-13292 ◽  
Author(s):  
Yefeng Feng ◽  
Qihuang Deng ◽  
Cheng Peng ◽  
Jianbing Hu ◽  
Yandong Li ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Energy Density ◽  
Polymer Nanocomposites ◽  
Breakdown Strength ◽  
Homogeneous Structure ◽  
Interface Engineering ◽  
Dielectric Composite ◽  
Conductive Fillers ◽  
Discharged Energy Density

Simultaneously improved permittivity and breakdown strength, accompanied with reduced dielectric loss and conductivity, are difficult to achieve in polymer nanocomposites with conductive fillers by blending to construct a homogeneous structure.

scholarly journals Enhanced breakdown strength and suppressed dielectric loss of polymer nanocomposites with BaTiO3 fillers modified by fluoropolymer

RSC Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 7065-7072
Author(s):  
Jianxin Zhang ◽  
Jiachen Ma ◽  
Luqing Zhang ◽  
Chuanyong Zong ◽  
Anhou Xu ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Polymer Nanocomposites ◽  
High Performance ◽  
Breakdown Strength ◽  
Composite Films ◽  
Hybrid Nanoparticles ◽  
Dielectric Composite

Preparation of high-performance dielectric composite films using PDFMA@BT hybrid nanoparticles as fillers.

scholarly journals Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2942
Author(s):  
Bhausaheb V. Tawade ◽  
Ikeoluwa E. Apata ◽  
Nihar Pradhan ◽  
Alamgir Karim ◽  
Dharmaraj Raghavan
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
High Performance ◽  
Breakdown Strength ◽  
Polymer Nanocomposite ◽  
High Energy ◽  
Polymer Chains ◽  
High Energy Density ◽  
Grafted Nanoparticles ◽  
Grafting From

The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely used in the formulation of advanced polymer nanocomposites. Ceramic-based polymer nanocomposites integrate key attributes of polymer and ceramic nanomaterial to improve the dielectric properties such as breakdown strength, energy density and dielectric loss. This review describes the ”grafting from” and ”grafting to” approaches commonly adopted to graft polymer chains on NPs pertaining to nano-dielectrics. The article also covers various surface initiated controlled radical polymerization techniques, along with templated approaches for grafting of polymer chains onto SiO2, TiO2, BaTiO3, and Al2O3 nanomaterials. As a look towards applications, an outlook on high-performance polymer nanocomposite capacitors for the design of high energy density pulsed power thin-film capacitors is also presented.

Enhanced dielectric properties and thermostability in polyimide composites with core-shell structured polyimide@BaTiO3 nanoparticles

2021 ◽  
pp. 095400832199352
Author(s):  
Wei Deng ◽  
Guanguan Ren ◽  
Wenqi Wang ◽  
Weiwei Cui ◽  
Wenjun Luo
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Energy Density ◽  
Breakdown Strength ◽  
In Situ Polymerization ◽  
Dielectric Materials ◽  
High Energy ◽  
Amic Acid ◽  
High Energy Density ◽  
Core Shell

Polymer composites with high dielectric constant and thermal stability have shown great potential applications in the fields relating to the energy storage. Herein, core-shell structured polyimide@BaTiO3 (PI@BT) nanoparticles were fabricated via in-situ polymerization of poly(amic acid) (PAA) and the following thermal imidization, then utilized as fillers to prepare PI composites. Increased dielectric constant with suppressed dielectric loss, and enhanced energy density as well as heat resistance were simultaneously realized due to the presence of PI shell between BT nanoparticles and PI matrix. The dielectric constant of PI@BT/PI composites with 55 wt% fillers increased to 15.0 at 100 Hz, while the dielectric loss kept at low value of 0.0034, companied by a high energy density of 1.32 J·cm−3, which was 2.09 times higher than the pristine PI. Moreover, the temperature at 10 wt% weight loss reached 619°C, demonstrating the excellent thermostability of PI@BT/PI composites. In addition, PI@BT/PI composites exhibited improved breakdown strength and toughness as compared with the BT/PI composites due to the well dispersion of PI@BT nanofillers and the improved interfacial interactions between nanofillers and polymer matrix. These results provide useful information for the structural design of high-temperature dielectric materials.

scholarly journals High discharged energy density of polymer nanocomposites induced by Nd-doped BaTiO3 nanoparticles

2018 ◽  
Vol 4 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Jing Wang ◽  
Juntao Hu ◽  
Lu Yang ◽  
Kongjun Zhu ◽  
Bao-Wen Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
Discharged Energy Density ◽  
Batio3 Nanoparticles

High-field antiferroelectric-like behavior in uniaxially stretched poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene)-grafted-poly(methyl methacrylate) films with high energy density

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1589-1599 ◽  
Author(s):  
Honghong Gong ◽  
Bei Miao ◽  
Xiao Zhang ◽  
Junyong Lu ◽  
Zhicheng Zhang
Keyword(s):  
Energy Density ◽  
Methyl Methacrylate ◽  
High Field ◽  
Vinylidene Fluoride ◽  
Breakdown Strength ◽  
High Energy ◽  
High Energy Density ◽  
Poly Methyl Methacrylate ◽  
Poly Vinylidene Fluoride ◽  
Discharged Energy Density

The antiferroelectric-like behavior could be retained up to 675 MV m−1 with a discharged energy density of 23.3 J cm−3 because of the confinement of rigid PMMA segment onto the ferroelectric relaxation of P(VDF-TrFE-CTFE) and the high breakdown strength.

Highly enhanced discharged energy density of polymer nanocomposites via a novel hybrid structure as fillers

2019 ◽  
Vol 7 (25) ◽  
pp. 15347-15355 ◽  
Author(s):  
Zhongbin Pan ◽  
Shuang Xing ◽  
Haitao Jiang ◽  
Jinjun Liu ◽  
Shuangwu Huang ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
Composite Films ◽  
Hybrid Structure ◽  
Discharge Time ◽  
Discharged Energy Density

Novel Ag@BaTiO3@PDA@Ag/P(VDF-HFP) composite films exhibited excellent discharged energy density (17.25 J cm−3) and ultrafast discharge time (∼139 ns).

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