Solid polymer electrolytes based on polyethylene oxide and lithium trifluoro- methane sulfonate (PEO–LiCF3SO3): Ionic conductivity and dielectric relaxation

Effect of the degree of porosity on the performance of poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide) blend membranes for lithium-ion battery separators

“…Different polymers such as poly(ethylene oxide) (PEO) [22] and poly(acrylonitrile (PAN) [23] can be used as battery separators. Among the most interesting polymers for this application are the highly polar and piezoelectric fluorinated polymers:…”

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

“…Polymer electrolytes represent a fascinating class of solid-state coordination compounds, which support ionic conductivity in flexible, yet solid membranes [1]. It has been reported that [2] chain polymers, carrying an electro-negative atom (oxygen or nitrogen) in their repeat unit, can act as solvents for certain salts as a consequence of the attractive interaction between chains and cations.…”

Conductivity of composite membrane-based poly(ether-ether-ketone) sulfonated (SPEEK) nanofiber mats of varying thickness

“…The difference between these two regions can be explained by taking into account that in the nanober phase (SPEEK-PVB), the charge transport takes place via a hopping mechanism between sulfonic groups in a frozen disorder structure. 66,67 However, in the phase matrix composed of the polymer SPEEK-PVA, the diffusion of protons takes place both via a hopping mechanism and via H 3 O + decrease by the effect of an increase in temperature due to the evaporation of water molecules from the polymeric matrix. Therefore, it is expected that higher values of activation energy will be associated to a higher amount of matrix phase, and smaller values should be expected with a higher amount of nanober phase.…”

“…In studies to measure the diffusivity of ILs in polymerized ionic liquids (PILs) using the method of pulsed eld gradient (PFG) NMR measurements, it has been observed that the conductivity of the PIL is greater than that of its molecular counterpart. 66 This indicates that the cation mobility is very slow to provide a signicant contribution to the true conductivity of the samples, and this should be dominated by the contributions of the anions. Thus, although all the available charges participate in the ionic transport, it can be assumed that the highest plausible contribution to the true conductivity, s ¼ s dc , for all the samples, is the mobility of the anions.…”