scholarly journals Energy conversion of electrostrictive poly(vinylidene fluoride-co-hexafluoropropylene)/Graphene composites

2021 ◽  
Vol 2145 (1) ◽  
pp. 012042
Author(s):  
R Ruadroew ◽  
P Thainiramit ◽  
C Putson
Keyword(s):  
Energy Conversion ◽  
Electric Fields ◽  
Vinylidene Fluoride ◽  
Graphene Nanosheets ◽  
Dielectric Constants ◽  
Photonic Sensor ◽  
Poly Vinylidene Fluoride ◽  
Electrostrictive Polymer ◽  
Electromechanical Energy ◽  
Lcr Meter

Abstract This study investigates energy-conversion properties of the electrostrictive polymer, poly(vinylidene fluoride-co-hexafluoropropylene), P(VDF-HFP), filled with graphene nanosheets (GNPs). The composites (i.e., P(VDF-HFP) and GNPs) were fabricated by using the solution casting method. The dielectric constant of these electrostrictive materials was measured to observe the energy conversion property with different frequencies using an LCR meter. Their mechanical properties were measured using a photonic sensor with varying various input vibrations and electric fields to calculate their electrostrictive coefficients. These characterized results revealed that dielectric constants and electrostrictive coefficients were significantly increased when GNPs fillers were filled higher. For the electrical property, the generating current, which was measured across these polymer films, increased proportionally with respect to the adding GNPs. In this obtained result, the main finding of P(VDF-HFP)/GNPs composites is a promising electrostrictive material for applications of electromechanical energy conversions in many smart-material systems.

Significant piezoelectric and energy harvesting enhancement of poly(vinylidene fluoride)/polypeptide fiber composites prepared through near-field electrospinning

2015 ◽  
Vol 3 (13) ◽  
pp. 6835-6843 ◽  
Author(s):  
Cheng-Tang Pan ◽  
Chung-Kun Yen ◽  
Hui-Chun Wu ◽  
Liwei Lin ◽  
Yi-Syuan Lu ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Energy Harvester ◽  
Vinylidene Fluoride ◽  
Near Field ◽  
Energy Conversion Efficiency ◽  
Fiber Composites ◽  
Poly Vinylidene Fluoride ◽  
Electromechanical Energy

A flexible PVDF/PMLG energy harvester captures electromechanical energy and its energy conversion efficiency was up to three times higher than individual PVDF and PMLG.

The high energy density and efficiency of PVDF-based composites with double-shell Nd-BaTiO3 particles as fillers

2020 ◽  
Vol 13 (06) ◽  
pp. 2051042
Author(s):  
Zhong Yang ◽  
Jing Wang ◽  
Long He ◽  
Chaoyong Deng ◽  
Kongjun Zhu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
High Energy ◽  
Maximum Energy ◽  
Dielectric Constants ◽  
High Energy Density ◽  
Element Simulation ◽  
Poly Vinylidene Fluoride

Flexible dielectric capacitors are becoming shining stars in modern electronic devices. Ceramic particles with large dielectric constants and benign compatibility are attractive candidates to enhance the energy storage density of pristine polymer capacitors while guaranteeing their flexibility. In this work, double-shell structure of Al2O3 (AO) and dopamine (PDA) were successively coated on the Nd-doped BaTiO3 (NBT) particles and then introduced into the Poly(vinylidene fluoride) (PVDF) matrix. Obvious enhancement in dielectric constants was observed while the dielectric loss remained nearly constant. For the composite films with 1–4[Formula: see text]vol.% NBT@AO@PDA NPs, the maximum energy density of 9.1[Formula: see text]J/cm3 and energy efficiency of 65% was achieved at 430[Formula: see text]MV/m in the sample with 1[Formula: see text]vol.% filling ratio, which are 1.4 and 1.3 times larger than those of pristine PVDF at 450[Formula: see text]MV/m. The finite element simulation reveals the effective relief of the electric field concentration in the composite film induced by the AO and PDA layers. The greater improvement in the energy storage performance could be anticipated if the dispersity of NBT@AO@PDA NPs was further improved.

Polarization study of poly(vinylidene fluoride) films under cyclic electric fields

2020 ◽  
Vol 60 (3) ◽  
pp. 645-656
Author(s):  
Shuang Qin ◽  
Xu Zhang ◽  
Zheng Yu ◽  
Feng Zhao
Keyword(s):  
Electric Fields ◽  
Vinylidene Fluoride ◽  
Polarization Study ◽  
Poly Vinylidene Fluoride

In situ synthesis of Ni(OH)2nanobelt modified electroactive poly(vinylidene fluoride) thin films: remarkable improvement in dielectric properties

2015 ◽  
Vol 17 (19) ◽  
pp. 13082-13091 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Biswajoy Bagchi ◽  
Nur Amin Hoque ◽  
Sukhen Das ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
In Situ Synthesis ◽  
Dielectric Constants ◽  
Remarkable Improvement ◽  
Poly Vinylidene Fluoride

Development of Ni(OH)2nanobelt modified electroactive PVDF thin films with colossal dielectric constantsviaa simplein situprocess.

Preparation, Morphology and Dielectric Properties of Polyamide-6/Poly(Vinylidene Fluoride) Blends

2012 ◽  
Vol 496 ◽  
pp. 263-267
Author(s):  
Rui Li ◽  
Jian Zhong Pei ◽  
Yan Wei Li ◽  
Xin Shi ◽  
Qun Le Du
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Flexible Electronics ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Volume Fraction ◽  
Polyamide 6 ◽  
Dielectric Constants ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

A novel all-polymeric material with high dielectric constant (k) has been developed by blending poly (vinylidene fluoride) (PVDF) with polyamide-6 (PA6). The dependence of the dielectric properties on frequency and polymer volume fraction was investigated. When the volume fraction of PA6 is 20%, the dielectric property is better than others. The SEM investigations suggest that the enhanced dielectric behavior originates from significant interfacial interactions of polymer-polymer. The XRD demonstrate that the PA6 and PVDF affect the crystalline behavior of each component. Furthermore, the stable dielectric constants of the blends could be tuned by adjusting the content of the polymers. The created high-k all-polymeric blends represent a novel type of material that are simple technology and easy to process, and is of relatively high dielectric constant, applications as flexible electronics.

A simple and controllable nanostructure comprising non-conductive poly(vinylidene fluoride) and graphene nanosheets for supercapacitor

2012 ◽  
Vol 6 (2) ◽  
pp. 149-159 ◽  
Author(s):  
Jing Sun ◽  
Ling-Hao He ◽  
Qiao-Ling Zhao ◽  
Li-Fang Cai ◽  
Rui Song ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Graphene Nanosheets ◽  
Poly Vinylidene Fluoride

scholarly journals PENGARUH DOSIS IMPLANTASI ION NITROGEN PADA SIFAT KAPASITASI POLIMER PVDF DAN PVDF-HFP

2018 ◽  
Vol 21 (2) ◽  
pp. 89
Author(s):  
Riza Nor Hudayawan ◽  
Darsono Darsono ◽  
Damar Yoga Kusuma
Keyword(s):  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Lcr Meter

Material berdensitas energi elektrik tinggi sebagai bahan dielektrik kapasitor sangat diperlukan dalam industri bidang elektronika. Tujuan penelitian ini ialah mengkarakterisasi dan menganalisis polimer PVDF( Poly vinylidene fluorde) dan PVDF-HFP (Poly vinylidene fluoride-co-hexafluoropropene)  sebelum dan sesudah diimplan ion nitrogen. Metode penelitian yang dilakukan ialah menyiapkan sampel lapisan tipis Polimer PVDFdan PVDF-HFP kemudian diimplan menggunakan ion nitrogen pada dosis 4,69 x 1016 ion/cm2 hingga 1,41 x 1018 ion/cm2 pada energi 10 keV. Selanjutnya nilai kapasitansi, faktor disipasi dan kekuatan dielektrik sampel dikarakterisasi menggunakan LCR meter GW-Instek 800. Morfologi dan ikatan struktur dari sampel dikarakterisasi menggunakan SEM dan FTIR. Hasil percobaan menunjukkan bahwa terjadi peningkatan nilai kapasitansi sebesar 4,3 kali pada polimer PVDF dan 1,4 kali pada polimer PVDF-HPF. Peningkatan nilai kapasitansi disebabkan bertambahnya ikatan rangkap C=C pada PVDF dan PVDF-HFP yang diimplan ion nitrogen. Hal tersebut dibuktikan dari hasil karakterisasi FTIR dan SEM. Namun demikian nilai kekuatan dielektrik mengalami penurunan akibat semakin konduktifnya polimer PVDF dan PVDF-HPF. Untuk sampel PVDF ada kapasitansi optimum dicapai pada dosis 9,38 x 1017 ion/cm2 sedangkan untuk sampel PVDF-HFP diatas dosis tersebut memperlihatkan gejala saturasi. Nilai kapasitansi optimal diperoleh berturut-turut sebesar 0,089483 nF, faktor disipasi 0,129613 % pada polimer PVDF dan 0,134889 nF, faktor disipasi 0,09784 % untuk polimer PVDF-HFP.

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