Investigations on PEO/PVP/NaBr complexed polymer blend electrolytes for electrochemical cell applications

Effects of potassium iodide (KI) on crystallinity, thermal stability, and electrical properties of polymer blend electrolytes (PVC/PEO:KI)

“…The co-ordination interactions, either ether oxygen atoms of PEO or the chlorine atoms of PVC or both with K + cations in the PVC/PEO:KI system, are responsible for the increase of ionic conductivity. The maximum conductivity is obtained due to the effective interaction between oxygen atoms and K + cations in the electrolyte system [57]. A reduction of crystallinity in PVC/PEO electrolytes can also be seen from the XRD analysis, which shows a decrement in the intensity of the sharp crystalline peaks with the addition of KI salt, resulting in a dominant amorphous phase in the electrolytes.…”

Poly(ethylene oxide)-lithium difluoro(oxalato)borate new solid polymer electrolytes: ion–polymer interaction, structural, thermal, and ionic conductivity studies

“…The effect of dopant salt on the modes of vibrations was observed in terms of decrease in the intensity, broadening of the bands with salt content and shifting of the bands which resulted from the formation of cross-links between the cations and ether oxygen atoms in PEO [30]. Figure 4 shows the spectra in the region of C-O-C stretching mode for the pure PEO and P(EO) n LiDFOB (n=8, 10, 12, 16, 20, and 30) SPEs.…”

Optimization of performance characteristics of 2-mercaptopyridine-doped polyvinylidene fluoride (PVDF) polymer electrolytes for dye-sensitized solar cells

“…Accordingly, the addition of plasticizer into the polymer electrolytes leads to a decrease in ΔH m values due to the enhanced ion-polymer-plasticizer interaction and the crystalline/amorphous nature of polymer affects polymer's ionic conductivity [10,26]. The complex formation between plasticizer and polymer leads to a decrease in crystallinity of polymer electrolytes favouring the polymer ionic conductivity.…”

“…Thus, research has been focused on developing a novel polymer electrolyte with high ionic conductivity and stability. There are various feasible methods, such as blending [10], copolymerization [11] and plasticization [12], which have been identified to improve the ionic conductivity of polymer electrolytes. Among which, the most successful approach to improve the ionic conductivity of the polymer electrolyte is the addition of organic plasticizer such as ethylene carbonate, propylene carbonate, diethyl carbonate and organic nitrogenous compound into polymer electrolyte system [13][14][15].…”