Achieving high dielectric permittivity, high breakdown strength and high efficiency by cross-linking of poly(vinylidene fluoride)/BaTiO3 nanocomposites

2019 ◽  
Vol 169 ◽  
pp. 142-150 ◽  
Author(s):  
Ze-Hui Dai ◽  
Ting Li ◽  
Yang Gao ◽  
Jun Xu ◽  
Jinliang He ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Breakdown Strength ◽  
Cross Linking ◽  
High Dielectric Permittivity ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

scholarly journals Crystallinity, morphology and high dielectric permittivity of NiO nanosheets filling Poly(vinylidene fluoride)

2015 ◽  
Vol 41 (10) ◽  
pp. 14733-14739 ◽  
Author(s):  
Rafael A.C. Amoresi ◽  
Anderson A. Felix ◽  
Eriton R. Botero ◽  
Nelson L.C. Domingues ◽  
Evaristo A. Falcão ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
High Dielectric Permittivity ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric ◽  
Nio Nanosheets

Graphene/poly(vinylidene fluoride) dielectric composites with polydopamine as interface layers

2017 ◽  
Vol 24 (3) ◽  
pp. 327-333 ◽  
Author(s):  
Hairong Li ◽  
Chenglong Xu ◽  
Zongyi Chen ◽  
Ming Jiang ◽  
Chuanxi Xiong
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
Interface Layer ◽  
Low Loss ◽  
Dielectric Characteristics ◽  
High Dielectric Permittivity ◽  
Reduced Graphene ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric ◽  
Interface Layers

AbstractA poly(vinylidene fluoride) (PVDF) nanocomposite incorporated with polydopamine-coated reduced graphene oxide (rGO@PDOPA) nanosheets has been developed with high dielectric permittivity and low loss for electricity storage applications. Structural analysis indicates that PDOPA was successfully anchored onto rGOs through non-covalent linkage under mild conditions. The presence of PDOPA layer between rGO and PVDF can not only prevent the agglomeration and direct contact of original rGOs but also enhance the interaction between PVDF and rGO and microcapacitor formation. Compared to rGO/PVDF composites, higher dielectric permittivity and lower loss factor were achieved simultaneously in rGO@PDOPA/PVDF nanocomposites at low and moderate frequencies. The PDOPA interface layers are effective in modifying the dielectric characteristics of the composites to increase the dielectric permittivity without the introduction of loss mechanisms. This study demonstrates that PDOPA is an ideal interface layer for the development of new percolative dielectric composites with high dielectric permittivity and low loss.

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