Development of ion conducting polymer gel electrolyte membranes based on polymer PVdF-HFP, BMIMTFSI ionic liquid and the Li-salt with improved electrical, thermal and structural properties

2015 ◽  
Vol 3 (28) ◽  
pp. 7305-7318 ◽  
Author(s):  
Shalu Shalu ◽  
Varun Kumar Singh ◽  
Rajendra Kumar Singh
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Ionic Conduction ◽  
Polymer Electrolyte Membranes ◽  
Polymer Gel ◽  
Polymer Gel Electrolyte ◽  
Electrolyte Membranes ◽  
Crystalline Nature ◽  
Ion Conducting ◽  
Ion Conducting Polymer

Figure (a) shows that the semi-crystalline nature of the polymer PVdF-HFP and Figure (b) shows that the polymer chain became flexible on the addition of LiTFSI salt. Furthermore, on the addition of IL in polymer electrolyte membranes, the membranes became more flexible and provide high ionic conduction (because of more availability of ions) in the system resulting in enhancement of the ionic conductivity (see Figure (c)).

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.

Mixed anion effect on the ionic transport behavior, complexation and various physicochemical properties of ionic liquid based polymer gel electrolyte membranes

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73028-73039 ◽  
Author(s):  
Shalu Shalu ◽  
Liton Balo ◽  
Himani Gupta ◽  
Varun kumar Singh ◽  
Rajendra Kumar Singh
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Physicochemical Properties ◽  
Intermolecular Interaction ◽  
Ionic Transport ◽  
Polymer Chains ◽  
Polymer Gel ◽  
Polymer Gel Electrolyte ◽  
Anion Effect ◽  
Electrolyte Membranes

Incorporation of IL in PGEMs increases the amorphicity of the membranes, through reducing the intermolecular interaction between the polymer chains, and also increases the membrane ionic conductivity.

Ionic Liquid Based Polymer Gel Electrolyte Membranes for Lithium Ion Rechargeable Batteries

2016 ◽  
Vol 73 (1) ◽  
pp. 183-189 ◽  
Author(s):  
S. - Kataria ◽  
L. Balo ◽  
H. Gupta ◽  
V. K. Singh ◽  
S. K. Singh ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Gel Electrolyte ◽  
Polymer Gel ◽  
Polymer Gel Electrolyte ◽  
Electrolyte Membranes

scholarly journals Li Ion Conducting Polymer Gel Electrolytes Based on Ionic Liquid/PVDF-HFP Blends

2007 ◽  
Vol 154 (11) ◽  
pp. A1048 ◽  
Author(s):  
Hui Ye ◽  
Jian Huang ◽  
Jun John Xu ◽  
Amish Khalfan ◽  
Steve G. Greenbaum
Keyword(s):  
Ionic Liquid ◽  
Conducting Polymer ◽  
Polymer Gel ◽  
Gel Electrolytes ◽  
Polymer Gel Electrolytes ◽  
Li Ion ◽  
Ion Conducting ◽  
Ion Conducting Polymer

scholarly journals Structural, electrical and electrochemical studies of ionic liquid-based polymer gel electrolyte using magnesium salt for supercapacitor application

2021 ◽  
Vol 28 (7) ◽  
Author(s):  
Ashish Gupta ◽  
Amrita Jain ◽  
S. K. Tripathi
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Vinylidene Fluoride ◽  
Gel Polymer Electrolyte ◽  
Polymeric Materials ◽  
Electrode Polarization ◽  
Polymer Gel ◽  
Polymer Gel Electrolyte ◽  
Supercapacitor Application ◽  
Electrochemical Window

AbstractIn the present studies, the effect of ionic liquid 1-Ethyl-2,3-dimethylimidazoliumtetrafluoroborate (EDiMIM)(BF4) on ionic conductivity of gel polymer electrolyte using poly(vinylidene fluoride-co-hexafluoropropylene) [PVdF(HFP)] and magnesium perchlorate [Mg(ClO4)2] as salt was investigated. The maximum room temperature ionic conductivity for the optimized system was found to be of the order of 8.4 × 10–3 S cm−1. The optimized composition reflects Vogel-Tammann-Fulcher (VTF) behavior in the temperature range of 25 °C to 100 °C. The X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy studies confirm the uniform blending of ionic liquid, polymer, and salts along with the enhanced amorphous nature of the optimized system. Dielectric and modulus spectra studies provide the information of electrode polarization as well as dipole relaxation properties of polymeric materials. The optimized electrolyte system possesses a sufficiently large electrochemical window of the order of 6.0 V with stainless steel electrodes.

scholarly journals The Impact of Composition and Morphology on Ionic Conductivity of Silk/Cellulose Bio-Composites Fabricated from Ionic Liquid and Varying Percentages of Coagulation Agents

2020 ◽  
Vol 21 (13) ◽  
pp. 4695 ◽  
Author(s):  
Bailey Blessing ◽  
Cory Trout ◽  
Abneris Morales ◽  
Karleena Rybacki ◽  
Stacy A. Love ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Ionic Conduction ◽  
Hydrophobic Interactions ◽  
Gravimetric Analysis ◽  
Dielectric Relaxation Spectroscopy ◽  
Scanning Calorimetry ◽  
Electrolyte Membranes ◽  
Bombyx Mori Silk ◽  
The Impact

Blended biocomposites created from the electrostatic and hydrophobic interactions between polysaccharides and structural proteins exhibit useful and unique properties. However, engineering these biopolymers into applicable forms is challenging due to the coupling of the material’s physicochemical properties to its morphology, and the undertaking that comes with controlling this. In this particular study, numerous properties of the Bombyx mori silk and microcrystalline cellulose biocomposites blended using ionic liquid and regenerated with various coagulation agents were investigated. Specifically, the relationship between the composition of polysaccharide-protein bio-electrolyte membranes and the resulting morphology and ionic conductivity is explored using numerous characterization techniques, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray scattering, atomic force microscopy (AFM) based nanoindentation, and dielectric relaxation spectroscopy (DRS). The results revealed that when silk is the dominating component in the biocomposite, the ionic conductivity is higher, which also correlates with higher β-sheet content. However, when cellulose becomes the dominating component in the biocomposite, this relationship is not observed; instead, cellulose semicrystallinity and mechanical properties dominate the ionic conduction.

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