scholarly journals Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type

Polymer ◽  
2019 ◽  
Vol 171 ◽  
pp. 58-69 ◽  
Author(s):  
D.M. Correia ◽  
C.M. Costa ◽  
R. Sabater i Serra ◽  
J.A Gómez Tejedor ◽  
L. Teruel Biosca ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Polymer Matrix ◽  
Vinylidene Fluoride ◽  
Molecular Relaxation ◽  
Poly Vinylidene Fluoride ◽  
Cation Type ◽  
Matrix Influence

Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids

2018 ◽  
Vol 52 (1) ◽  
pp. 385-394 ◽  
Author(s):  
Jipeng Guan ◽  
Jieqing Shen ◽  
Xingru Chen ◽  
Hengti Wang ◽  
Qin Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Vinylidene Fluoride ◽  
Crystal Forms ◽  
Poly Vinylidene Fluoride

scholarly journals Protic ionic liquids/poly(vinylidene fluoride) composite membranes for fuel cell application

2021 ◽  
Vol 53 ◽  
pp. 197-207 ◽  
Author(s):  
Isabel Vázquez-Fernández ◽  
Mohamed Raghibi ◽  
Adnane Bouzina ◽  
Laure Timperman ◽  
Janick Bigarré ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Fuel Cell ◽  
Vinylidene Fluoride ◽  
Composite Membranes ◽  
Protic Ionic Liquids ◽  
Fuel Cell Application ◽  
Poly Vinylidene Fluoride

Influence of hydrophilic/hydrophobic protic ionic liquids (PILs) on the poly(vinylidene fluoride) (PVDF-ionic liquid) membrane properties

2020 ◽  
Vol 55 (35) ◽  
pp. 16697-16717
Author(s):  
Isabel Vázquez-Fernández ◽  
Adnane Bouzina ◽  
Mohamed Raghibi ◽  
Laure Timperman ◽  
Janick Bigarré ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Membrane ◽  
Vinylidene Fluoride ◽  
Membrane Properties ◽  
Protic Ionic Liquids ◽  
Poly Vinylidene Fluoride

scholarly journals Enhanced ionic conductivity in halloysite nanotube-poly(vinylidene fluoride) electrolytes for solid-state lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (60) ◽  
pp. 34232-34240 ◽  
Author(s):  
Peiqi Lun ◽  
Zilong Chen ◽  
Zhenbao Zhang ◽  
Shaozao Tan ◽  
Dengjie Chen
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Vinylidene Fluoride ◽  
Lithium Ion ◽  
Special Structure ◽  
Halloysite Nanotube ◽  
Poly Vinylidene Fluoride

The special structure of HNTs and the further formation of amorphous PVDF contribute to the enhancement of the Li+transfer.

NOVEL POLYMER ELECTROLYTE BASED ON POLY(VINYLIDENE FLUORIDE) AND POLY(4-VINYL PYRIDINE) HAVING A NANO-CHANNEL FOR ION TRANSPORTATION

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1313-1318
Author(s):  
SEUNG HYUN OH ◽  
SEONG LAK KANG ◽  
KWANG-UN JEONG ◽  
CHANGWOON NAH ◽  
BAIK-HWAN CHO
Keyword(s):  
Ionic Conductivity ◽  
Vinylidene Fluoride ◽  
Porous Polymer ◽  
Fiber Mats ◽  
Vinyl Pyridine ◽  
Poly Vinylidene Fluoride ◽  
Nano Channel ◽  
Wet Condition ◽  
Ion Transportation ◽  
Fast Ion

The micro-porous polymer electrolytes membranes(PEMs), notably electro-spun fiber mats, have been suggested to give an improved ionic conductivity. However, the mat-type PEMs have a poor mechanical and dimensional stability because of their inevitable porous nature. In this study, we suggest a new PEM system based on poly(vinylidene fluoride)(PVdF) mats, which can overwhelm such shortcomings of the porous mats by introducing another component, poly(4-vinyl pyridine)(P4VP), into the mats. The tensile strength of PVdF / P 4 VP membrane was considerably improved compared with that of pristine PVdF membrane under dry and wet conditions. The ionic conductivity was also improved by about 10 times than that of PVdF mat. A micro- to nano-size gap was formed at the interfaces between PVdF nanofiber and P 4 VP , and this may act as a channel for fast ion transportation under wet condition.

Preparation and characterization of PVDF-MG49-NH4CF3SO3 based solid polymer electrolyte

e-Polymers ◽  
2014 ◽  
Vol 14 (2) ◽  
pp. 115-120 ◽  
Author(s):  
N. Ataollahi ◽  
A. Ahmad ◽  
T.K. Lee ◽  
A.R. Abdullah ◽  
M.Y.A. Rahman
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Lithium Ion ◽  
Linear Sweep Voltammetry ◽  
Solid Polymer ◽  
Conductivity Enhancement ◽  
Temperature Dependence Of Conductivity ◽  
Poly Vinylidene Fluoride ◽  
Ion Conducting

AbstractThe ionic conductivity of ammonium-based solid polymer films of poly(vinylidene fluoride) (PVDF) blended with MG49, a graft of natural rubber and poly(methyl methacrylate), with various compositions of ammonium triflate NH4CF3SO3, was investigated. As a result, 30 wt.% of NH4CF3SO3-doped polymer electrolyte exhibits the highest ionic conductivity at 6.32×10-4 S/cm at room temperature. The conductivity enhancement can be attributed to the increase in the number of NH4+ as charge carriers. The significance of the blend is the increase of one order in ionic conductivity as compared with pure PVDF electrolyte. The temperature dependence of conductivity of the electrolyte does not obey the Arrhenius law. However, the conductivity increases with temperature and it reached 1.56×10-3 S/cm at 363 K. X-ray diffraction reveals a decrease in crystallinity of the electrolyte upon the addition of NH4CF3SO3 salt. This result is supported by scanning electron microscopy. Linear sweep voltammetry demonstrates that the anodic stability of the electrolyte is up to 4 V. Therefore, the electrolyte shows good compatibility with high-voltage electrode. Hence, this electrolyte system can be a prospective candidate as lithium-ion conducting electrolyte for lithium batteries.

The relation between the composition, structure and absorption properties of ultra-high frequency radio waves of poly(vinylidene fluoride)/magnetite nanocomposites

2019 ◽  
Vol 33 (10) ◽  
pp. 1950083 ◽  
Author(s):  
M. A. Ramazanov ◽  
F. V. Hajiyeva ◽  
H. A. Shirinova ◽  
H. M. Mamedov
Keyword(s):  
Polymer Matrix ◽  
High Frequency ◽  
Electromagnetic Waves ◽  
Vinylidene Fluoride ◽  
Molecular Structures ◽  
Radio Waves ◽  
X Ray Diffraction ◽  
Atomic Force ◽  
Poly Vinylidene Fluoride ◽  
Composition Structure

In the presented work, nanocomposites based on poly (vinylidene fluoride) (PVDF) and magnetite Fe3O4 nanoparticles were prepared. The structure and content of nanocomposite materials were studied by using scanning electron microscope (SEM), atomic-force microscope (AFM) and X-Ray diffraction (XRD). Magnetic properties of PVDF[Formula: see text]+[Formula: see text]Fe3O4 nanocomposites have been studied upon increasing nanoparticle content in polymer matrix upto 20%, revealing superparamagnetic behavior as Fe3O4 nanoparticles in polymer matrix act out like single-domain particles. It has also been observed that PVDF[Formula: see text]+[Formula: see text]Fe3O4-based nanocomposites can absorb the electromagnetic waves in the high frequency range 0.1–30 GHz. It has been shown that the absorption of high frequency radio waves by PVDF[Formula: see text]+[Formula: see text]Fe3O4 nanocomposites can be explained by the different molecular structures and also by the scattering of the radio waves at the boundary of nanoparticle-polymer matrix.

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