Nafion/Poly Vinylidene Fluoride (PVDF) Blends for Polymer Electrolyte Membranes Application

2012 ◽  
Author(s):  
Nonhlanhla P. Cele
Keyword(s):  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Polymer Electrolyte Membranes ◽  
Poly Vinylidene Fluoride ◽  
Electrolyte Membranes

Polymer electrolyte membranes composed of an electrospun poly(vinylidene fluoride) fibrous mat in a poly(4-vinylpyridine) matrix

2012 ◽  
Vol 62 (3) ◽  
pp. 375-381 ◽  
Author(s):  
Changwoon Nah ◽  
Kwang-Un Jeong ◽  
Youn-Sik Lee ◽  
Soo-Hyoung Lee ◽  
Mohamed Mustafa Abdul Kader ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Polymer Electrolyte Membranes ◽  
Poly Vinylidene Fluoride ◽  
Electrolyte Membranes

scholarly journals Polymer Electrolyte Membranes Prepared by Graft Copolymerization of 2-Acrylamido-2-Methylpropane Sulfonic Acid and Acrylic Acid on PVDF and ETFE Activated by Electron Beam Treatment

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1175 ◽  
Author(s):  
Xi Ke ◽  
Yufei Zhang ◽  
Uwe Gohs ◽  
Marco Drache ◽  
Sabine Beuermann
Keyword(s):  
Electron Beam ◽  
Acrylic Acid ◽  
Polymer Electrolyte ◽  
Sulfonic Acid ◽  
Vinylidene Fluoride ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membranes ◽  
Electron Beam Treatment ◽  
Standard Material ◽  
Electrolyte Membranes

Polymer electrolyte membranes (PEM) for potential applications in fuel cells or vanadium redox flow batteries were synthesized and characterized. ETFE (poly (ethylene-alt-tetrafluoroethylene)) and PVDF (poly (vinylidene fluoride)) serving as base materials were activated by electron beam treatment with doses ranging from 50 to 200 kGy and subsequently grafted via radical copolymerization with the functional monomers 2-acrylamido-2-methylpropane sulfonic acid and acrylic acid in aqueous phase. Since protogenic groups are already contained in the monomers, a subsequent sulfonation step is omitted. The mechanical properties were studied via tensile strength measurements. The electrochemical performance of the PEMs was evaluated by electrochemical impedance spectroscopy and fuel cell tests. The proton conductivities and ion exchange capacities are competitive with Nafion 117, the standard material used today.

scholarly journals Physical-chemical and electrochemical properties of sodium ion conducting polymer electrolyte using copolymer poly(vinylidene fluoride- hexafluoropropylene) (PVDF-HFP)/ polyethylene oxide (PEO)

2019 ◽  
Vol 22 (1) ◽  
pp. 147-157
Author(s):  
Thanh Duy Vo ◽  
Trung Minh Phung ◽  
Hoang Quoc Duy Hoang Truong ◽  
Linh Thi My Nguyen ◽  
Oanh Hoang Nguyen ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Polymer Electrolyte Membranes ◽  
Sodium Ion ◽  
Potential Range ◽  
Sodium Ion Battery ◽  
Potential Candidate ◽  
Voltage Range ◽  
Electrolyte Membranes

Introduction: Polymers acting as both an electrolyte and a separator are of tremendous interest because of their many virtues, such as no leakage, flexible geometry, excellent safe performance, and good compatibility with electrodes, compared with their liquid counterparts. In this study, polymer electrolyte membranes comprising of poly(vinylidene fluorine-co-hexafluoropropylene) [PVDF-HFP] were plasticized with different mass ratios of poly(ethylene oxide) (PEO) in 1 M NaClO4/PC solutions, and were prepared and characterized in sodium-ion battery. Methods: Polymer electrolyte membranes were prepared by solution-casting techniques. The membranes' performance was evaluated in terms of morphology, conductivity, electrochemical stability, thermal properties and miscibility structure. The following various characterization methods were used: Scanning Electron Microscopy (SEM), impedance spectroscopy (for determination of electrolyte resistance), cyclic voltammetry, thermal degradation analysis, and infra-red spectroscopy (for determination of structure of co-polymer). Results: It was indicated that the PVDF-HFP/PEO membrane with 40 % wt. PVDF-HFP absorbed electrolytes up to 300 % of its weight and had a roomtemperature conductivity of 2.75 x 10-3 Scm-1, which was better than that of pure PVDF-HFP. All polymer electrolyte films were electrochemically stable in the potential voltage range of 2-4.2 V, which could be compatible with 3-4 V sodium material electrodes in rechargeable sodium cells. Conclusion: The PVDF-HFP/PEO polymer electrolyte film is a potential candidate for sodium-ion battery in the potential range of 2-4.2 V.  

scholarly journals Ionic Liquid-Incorporated Zn-Ion Conducting Polymer Electrolyte Membranes

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1755
Author(s):  
Jianghe Liu ◽  
Sultan Ahmed ◽  
Zeba Khanam ◽  
Ting Wang ◽  
Shenhua Song
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Conducting Polymer ◽  
Vinylidene Fluoride ◽  
Polymer Electrolyte Membranes ◽  
Potential Candidate ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes ◽  
Ion Conducting ◽  
Ion Conducting Polymer

In this study, novel ionic liquid-incorporated Zn-ion conducting polymer electrolyte membranes containing polymer matrix poly (vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMITf), along with zinc trifluoromethanesulfonate Zn(Tf)2, are prepared and investigated. It is ascertained that the optimal membrane ILPE-Zn-4 (the mass ratio of EMITf:Zn(Tf)2:PVDF-HFP is 0.4:0.4:1), with abundant nanopores, exhibits a high amorphousness. At room temperature, the optimized electrolyte membrane offers a good value of ionic conductivity (~1.44 × 10−4 S cm−1), with a wide electrochemical stability window (~4.14 V). Moreover, the electrolyte membrane can sustain a high thermal decomposition temperature (~305 °C), and thus its mechanical performance is sufficient for practical applications. Accordingly, the ionic liquid-incorporated Zn-ion conducting polymer electrolyte could be a potential candidate for Zn-based energy storage applications.

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