Poly(vinyl pyrrolidone)-coated graphene/poly(vinylidene fluoride) composite films with high dielectric permittivity and low loss

2015 ◽  
Vol 121 ◽  
pp. 49-55 ◽  
Author(s):  
Hairong Li ◽  
Zongyi Chen ◽  
Lei Liu ◽  
Jianping Chen ◽  
Ming Jiang ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Vinyl Pyrrolidone ◽  
Low Loss ◽  
High Dielectric Permittivity ◽  
Poly Vinylidene Fluoride ◽  
Poly Vinyl Pyrrolidone ◽  
High Dielectric

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.

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

Improving the dielectric properties of poly(vinylidene fluoride) composites by using poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods

2016 ◽  
Vol 4 (7) ◽  
pp. 1504-1510 ◽  
Author(s):  
Shuangmin Yu ◽  
Fan Qin ◽  
Gengchao Wang
Keyword(s):  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Polymer Nanocomposite ◽  
Vinyl Pyrrolidone ◽  
Low Dielectric ◽  
Poly Vinylidene Fluoride ◽  
Poly Vinyl Pyrrolidone ◽  
High Dielectric ◽  
Polyaniline Nanorods ◽  
Dielectric Polymer

A promising PVDF-based dielectric polymer nanocomposite based on easily dispersed and poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods (dPANI@PVP) was fabricated and displayed a high dielectric constant and low dielectric loss.

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