Sodium ion conducting flame-retardant gel polymer electrolyte for sodium batteries and electric double layer capacitors (EDLCs)

2022 ◽  
Vol 46 ◽  
pp. 103899
Author(s):  
Deepak Kumar ◽  
Nitish Yadav ◽  
Kuldeep Mishra ◽  
Raza Shahid ◽  
Tasnim Arif ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polymer Electrolyte ◽  
Double Layer ◽  
Electric Double Layer ◽  
Gel Polymer Electrolyte ◽  
Sodium Ion ◽  
Sodium Batteries ◽  
Ion Conducting ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Ionic Conductivity of Sodium Ion with NaCF3SO3 Salts in Electrolyte for Sodium Batteries

2005 ◽  
Vol 486-487 ◽  
pp. 638-641 ◽  
Author(s):  
Tae-Bum Kim ◽  
Cheol Wan Park ◽  
Ho Suk Ryu ◽  
Hyo Jun Ahn
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Room Temperature ◽  
Gel Polymer Electrolyte ◽  
Impedance Measurement ◽  
Ac Impedance ◽  
Sodium Ion ◽  
Sodium Battery ◽  
Sodium Batteries ◽  
Ion Conducting

To find out the proper sodium ion conducting electrolyte at room temperature, we investigated the ac impedance measurement of PVdF gel polymer electrolyte and liquid tetraglyme(TEGDME) with various concentrations of sodium trifluoromethane sulfonate(NaCF3SO3). The concentration of NaCF3SO3 did not severely affect the ionic conductivity. The sodium ionic conductivity using TEGDME with NaCF3SO3 was about 3.3×10-4 S㎝-1 which was lower than that of the PVdF gel polymer electrolyte, 5.0×10-4 S㎝-1. From the viewpoint of ionic conductivity, PVdF gel polymer electrolyte was proper electrolyte for sodium battery.

scholarly journals High Performance Poly(vinyl alcohol)-Based Li-Ion Conducting Gel Polymer Electrolyte Films for Electric Double-Layer Capacitors

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1179 ◽  
Author(s):  
Jingwei Wang ◽  
Zejia Zhao ◽  
Shenhua Song ◽  
Qing Ma ◽  
Renchen Liu
Keyword(s):  
Polymer Electrolyte ◽  
Double Layer ◽  
Vinyl Alcohol ◽  
Electric Double Layer ◽  
High Performance ◽  
Ionic Conduction ◽  
Gel Polymer Electrolyte ◽  
Transference Number ◽  
Poly Vinyl Alcohol ◽  
Ion Conducting

With 1-methyl-2-pyrrolidinone (NMP) as the solvent, the biodegradable gel polymer electrolyte films are prepared based on poly(vinyl alcohol) (PVA), lithium bis(trifluoromethane)sulfonimide (LiTFSI), and 1-ethyl-3 methylimidazoliumbis(trifluoromethylsulfonyl)imide (EMITFSI) by means of solution casting. The films are characterized to evaluate their structural and electrochemical performance. The 60PVA-40LiTFSI + 10 wt.% EMITFSI system exhibits excellent mechanical properties and a high ionic transference number (0.995), indicating primary ionic conduction in the film. In addition, because of the flexibility of polymer chain segments, its relaxation time is as low as 5.30 × 10−7 s. Accordingly, a high ionic conductivity (3.6 × 10−3 S cm−1) and a wide electrochemical stability window (~5 V) are obtained. The electric double-layer capacitor (EDLC) based on this electrolyte system shows a specific capacitance of 101 F g−1 and an energy density of 10.3 W h kg−1, even after 1000 charge-discharge cycles at a current density of 0.4 A g−1 under a charging voltage of 2 V. All these excellent properties imply that the NMP-soluble 60PVA-40LiTFSI + 10 wt.% EMITFSI gel polymer electrolyte could be a promising electrolyte candidate for electrochemical device applications.

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