Thermal stability and gas absorption characteristics of ionic liquid-based solid polymer electrolytes

2021 ◽  
Vol 154 (5) ◽  
pp. 054902
Author(s):  
Asghar Shirani ◽  
Jihung Lee ◽  
Diana Berman
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Gas Absorption ◽  
Solid Polymer ◽  
Absorption Characteristics

Polyvinyl fibers as outperform candidature in the solid polymer electrolytes

2020 ◽  
pp. 152808372097062
Author(s):  
Muhammad Yameen Solangi ◽  
Umair Aftab ◽  
Muhammad Ishaque ◽  
Aqeel Bhutto ◽  
Ayman Nafady ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Weight Loss ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Vital Role ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Main Challenge ◽  
Different Temperatures ◽  
Solution Cast

Solid polymer electrolytes (SPEs) are the best choice to replace liquid electrolytes in supercapacitors, fuel cells, solar cells and batteries. The main challenge in this filed is the ionic conductivity and thermal stability of SPEs which is still not up to mark, therefore more investigations are needed to address these issues. In this study, PVA/salt based SPEs was fabricated using both solution cast and electro-spinning methods to probe the effect of different salts such as (NaCl, KCl and KI) and their concentrations on the ionic conductivity. Scanning electron microscopy (SEM) x and Fourier Transform Infra-Red (FTIR) have been employed to study the morphology as well as the different functional groups of SPEs, respectively. It was noted that small addition of NaCl, KCl and KI salts in SPEs dramatically increased the ionic conductivity to 5.95×10−6, 5.31×10−6 and 4.83×10−6 S/cm, respectively. Importantly, the SPEs obtained with NaCl via electro-spinning have higher ionic conductivity (5.95×10−6 S/cm) than their casted SPEs (1.87×10−6 S/cm). Thermal stability was also studied at two different temperatures i.e. 80 °C and 100 °C. The weight loss percentage of electrospun SPEs have zero percent weight loss than the solution based SPEs. The combined results clearly indicated that the nature of salt, concentration and fabrication process play a vital role in the ionic conductivity. Also, the NaCl salt with low molecular weight at low concentrations shows an enhanced ionic conductivity.

scholarly journals Plasticized 3D-Printed Polymer Electrolytes for Lithium-Ion Batteries

2021 ◽  
Author(s):  
Adi Vinegrad ◽  
Heftsi Ragones ◽  
Nishani Jayakodi ◽  
Gilat Ardel ◽  
Meital Goor ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Fused Filament Fabrication ◽  
Free Standing ◽  
Show Evidence ◽  
Order Of Magnitude ◽  
3D Printed

Abstract In the current research, we developed and printed by fused-filament fabrication polylactide-polyethylene-oxide blended membranes. The influence of relative content of polymers on the ease of extrusion and printing processes was studied. Ionic liquid N-butyl-N-methylpyrrolidinium bis(trifluoromethane-sulfonyl)imide (Pyr14TFSI) with dissolved LiTFSI salt was infused into the membranes to produce free-standing films of quasi-solid polymer electrolytes. The printed membranes were characterized by ESEM, DSC, XPS, NMR and EIS methods. Neat-printed PLA membrane exhibited poor wetting and low uptake of ionic liquid. However, the XPS tests of 3D-printed PLA-PEO membrane infused with LiTFSI solvated ionic liquid show evidence of the interaction between lithium cations with both, PEO and PLA. The measurements of diffusion coefficients by PGSE-NMR suggest that the Li+ ions are coordinated by the PEO segments in the polymer blend. Increase of the PEO content at the expense of PLA polymer, leads to more than one order of magnitude improvement of bulk conductivity, approaching 0.2mS/cm at 60℃.

Enabling high performance all-solid-state lithium metal batteries using solid polymer electrolytes plasticized with ionic liquid

2020 ◽  
Vol 345 ◽  
pp. 136156 ◽  
Author(s):  
Matthew D. Widstrom ◽  
Kyle B. Ludwig ◽  
Jesse E. Matthews ◽  
Angelique Jarry ◽  
Metecan Erdi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Polymer Electrolytes ◽  
High Performance ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Lithium Metal ◽  
Lithium Metal Batteries
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