Development of ionic liquid mediated novel polymer electrolyte membranes for application in Na-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40199-40210 ◽  
Author(s):  
Varun Kumar Singh ◽  
Shalu Shalu ◽  
Sujeet Kumar Chaurasia ◽  
Rajendra Kumar Singh
Keyword(s):  
Cyclic Voltammetry ◽  
Ionic Liquid ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Ac Impedance ◽  
Polymer Electrolyte Membranes ◽  
Ac Impedance Spectroscopy ◽  
Electrolyte Membranes

Polymer electrolyte membranes based on polymer PEO, ionic liquid, 1-butyl-3-methylimidazolium methylsulfate (BMIM-MS), and salt, sodium methylsulfate (NaMS), were prepared and characterized by SEM, XRD, TGA/DTGA, DSC, ac impedance spectroscopy and cyclic voltammetry.

A Structural Study on Ionic-Liquid-Based Polymer Electrolyte Membranes

2007 ◽  
Vol 154 (8) ◽  
pp. G183 ◽  
Author(s):  
A. Martinelli ◽  
A. Matic ◽  
P. Jacobsson ◽  
L. Börjesson ◽  
M. A. Navarra ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Structural Study ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes

The Evaluation of Ionic Conductivity in Polymer Electrolyte Membranes

2008 ◽  
Vol 59 (10) ◽  
Author(s):  
Danut-Ionel Vaireanu ◽  
Ioana Maior ◽  
Alexandra Grigore ◽  
David Savoiu
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Electrochemical Cell ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membranes ◽  
Membrane Thickness ◽  
Electrolyte Membranes ◽  
Conducting Membranes

A novel electrochemical cell for the evaluation of the ionic conductivity in polymer conducting membranes is proposed. This cell has the advantages of being able to determine with high precision the membrane thickness during electrochemical impedance spectroscopy measurements. A conductivity factor is also proposed in order to classify various membranes with respect to their conductivity versus a reference membrane, namely Nafion� 117.

Study of PVAc-PMMA-LiCl polymer blend electrolyte and the effect of plasticizer ethylene carbonate and nanofiller titania on PVAc-PMMA-LiCl polymer blend electrolyte

2017 ◽  
Vol 37 (6) ◽  
pp. 617-631 ◽  
Author(s):  
Manuel Victor Leena Chandra ◽  
Shunmugavel Karthikeyan ◽  
Subramanian Selvasekarapandian ◽  
Manavalan Premalatha ◽  
Sampath Monisha
Keyword(s):  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Polymer Blend ◽  
Polymer Electrolytes ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Ac Impedance ◽  
Ac Impedance Spectroscopy ◽  
Ion Conducting ◽  
Polymer Blend Electrolyte

Abstract lithium ion conducting polymer electrolyte is one of the essential components of modern rechargeable lithium batteries because of its good interfacial contact with electrodes and effective mechanical properties. A solid lithium ion conducting polymer blend electrolyte is prepared using poly (vinyl acetate) (PVAc) and poly (methyl methacrylate) (PMMA) polymers with different molecular weight percentages (wt%) of lithium chloride (LiCl) by the solution casting technique with tetrahydrofuran as a solvent. The polymer electrolytes were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), Thermogravimetry (TG), AC impedance spectroscopy and ionic transport measurements. XRD and FTIR studies confirm the amorphous nature of the polymer electrolyte and the complexation of salt with polymer. The thermal behavior of polymer electrolytes has been studied from DSC and TG. The highest conductivity obtained using AC impedance spectroscopy is 1.03×10−5 Scm−1 at 303 K for 70 wt%PVAc:30 wt%PMMA:0.8 wt% of LiCl polymer-salt complex. The plasticizer ethylene carbonate (EC) and nanofiller titania (TiO2) were added to the optimized high conducting blend polymer electrolyte. An enhancement in conductivity by one order of magnitude was observed for the plasticized 70 wt%PVAc-30 wt%PMMA-0.8 wt% LiCl polymer electrolyte at ambient temperature. The ionic conductivity value obtained using AC impedance spectroscopy for the plasticized 70 wt%PVAc-30 wt%PMMA-0.8 wt% LiCl polymer electrolyte was 1.03×10−4 Scm−1. The highest conductivity obtained for 70 wt%PVAc-30 wt%PMMA-0.8% LiCl-6 mg TiO2 was 4.45×10−4 Scm−1. Dielectric properties of polymer films are studied and discussed. The electrochemical stability of 1.69 V and 2.69 V was obtained for 70 wt%PVAc-30 wt%PMMA-0.8% LiCl and 70 wt%PVAc-30 wt%PMMA-0.8% LiCl-6 mg TiO2 polymer electrolytes, respectively, using linear sweep voltammetry. The value of Li+ ion transference number was estimated by the DC polarization method and was found to be 0.99 for the highest conducting 70 wt%PVAc-30 wt%PMMA-0.8 wt% LiCl-6 mg TiO2 nanocomposite polymer electrolyte.

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