Solid polymer electrolytes with poly(vinyl alcohol) and piperidinium based ionic liquid for Li-ion batteries

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

“…In amorphous structure, backbones of polymer are extra flexible as well as possess larger segmental movement of chains. The segments movement in the amorphous structure enhances ionic movement through creating and breaking the solvated ions coordination sphere with offering more free space or volume in which the ions can diffuse due to the electrical field (EF) effect [ 31 , 32 ]. Nonetheless, there is a reduction in the σ DC at uppermost concentration of salt in the previous study because of the reduction of free ions with the recrystallization increment [ 33 ].…”

“…The addition of Cd(II)–complex and Gly to the PE improves its amorphous structure, which in turn increases the σ DC and enhances the EDLC performance. Rangasamy et al [ 32 ] thought that the increase in the amorphous structure of the PE increases the ions mobility by creating more free volume in the PE system. This results in growing of the segmental motion of the polymer chains, because of the rise in the polymer chains flexibility.…”

Flexible and Conductive 3D Printable Polyvinylidene Fluoride and Poly(N,N‐dimethylacrylamide) Based Gel Polymer Electrolytes

“…[ 5,6 ] To date, various GPEs have been reported based on different polymer matrices such as poly(ethylene oxide), polyethylene glycol diacrylate, poly(methyl methacrylate), polyvinyl chloride, poly(vinyl alcohol), poly(vinylidene fluoride) (PVDF), poly(acrylonitrile), and poly(vinylidene fluoride hexafluoropropylene) (PVDF‐HFP) copolymer via physical and chemical bonding. [ 7–12 ] Between all of these host polymers, fluoropolymers such as PVDF and PVDF‐HFP are found to exhibit high quality in GPEs for battery owing to their thermoplasticity, semicrystallinity, easy processability, good mechanical strength, high thermal and electrochemical stability, and compatible Li/ electrolyte interface. [ 13,14 ] The most common method of preparing GPEs is absorbing a nonconducting porous polymeric membrane in liquid electrolyte.…”

Ionanofluid plasticized electrolyte with improved electrical and electrochemical properties for high‐performance lithium polymer battery

“…Therefore, suppression of crystallinity, along with increasing the percentage of the amorphous phase in the PEO matrix, is the design criterion for PEO-based electrolyte. Numerous approaches, that is, dispersion of inorganic fillers, such as SiO 2, 5 TiO 2, 6 Al 2 O 3, 7,8 ZrO 2, 9 MMT, 10 etc, blending the polymer with liquid plasticizers, [11][12][13][14][15][16] mingling with other polymers, 17,18 crosslinking of polymers, 19 copolymerization, 20 etc, have been employed to improve the ionic conductivity of PEO-based electrolytes. It has been observed that incorporation of the liquid plasticizers, such as aprotic carbonated solvents and room temperature ionic liquids (ILs), in the polymer matrices is an effective means to improve the conductivity of those polymer electrolytes.…”

“…It has been observed that incorporation of the liquid plasticizers, such as aprotic carbonated solvents and room temperature ionic liquids (ILs), in the polymer matrices is an effective means to improve the conductivity of those polymer electrolytes. [11][12][13][14][15][16] Plasticization is one of the convenient ways of suppressing crystallinity and increasing the extent of the amorphous phase in PEO-LiX electrolytes. 2 Moreover, they also improve the ionpair dissociation and thereby enhance the concentration of charge carriers, leading to the enhancement in ionic conductivity.…”