2011
DOI: 10.3390/polym3020674
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Spectroscopic Investigation of Composite Polymeric and Monocrystalline Systems with Ionic Conductivity

Abstract: Abstract:The conductivity mechanism is studied in the LiCF 3 SO 3 -doped polyethylene oxide by monitoring the vibrations of sulfate groups and mobility of Li + ion along the polymeric chain at different EO/Li molar ratios in the temperature range from 16 to 90 °С. At the high EO/Li ratio (i.e., 30), the intensity of bands increases and a triplet appears at 1,045 cm −1 , indicating the presence of free anions, ionic pairs and aggregates. The existence of free ions in the polymeric electrolyte is also proven by … Show more

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Cited by 12 publications
(7 citation statements)
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“…The strong band at 1349 cm −1 can be assigned to CH 2 wagging vibration, and it is related to the EO methylene wagging vibrations of the gauche conformation, whereas the weak band at 1250 cm −1 may be related to CH 2 twisting mode, both of which are characteristic of the amorphous state [50][51][52].…”
Section: Resultsmentioning
confidence: 99%
“…The strong band at 1349 cm −1 can be assigned to CH 2 wagging vibration, and it is related to the EO methylene wagging vibrations of the gauche conformation, whereas the weak band at 1250 cm −1 may be related to CH 2 twisting mode, both of which are characteristic of the amorphous state [50][51][52].…”
Section: Resultsmentioning
confidence: 99%
“…The peak at ∼517 cm −1 is assigned to −CF 3 bending from the electrolyte. 55 Therefore, this peak does not shift during reduction/oxidation and is independent of cell potential changes. However, as shown in Figure 10a, a new peak appears as the cell is discharged (highlighted with red arrows).…”
Section: ■ Experimental Methodsmentioning
confidence: 94%
“…However, both extremely low wettability with liquid electrolytes and weak thermal stability have limited its further application in energy storage systems especially in hybrid electric vehicles (HEVs) areas [ 4 , 5 , 6 ]. To remedy the above defects, different kinds of separators were reported, such as polymers’ surface grafting modification of polyolefin separators [ 7 , 8 , 9 ], ceramic coating separators [ 6 , 10 , 11 , 12 , 13 , 14 ], nonwoven membrane [ 15 , 16 , 17 , 18 , 19 , 20 ] and polymer electrolyte used as separators [ 21 , 22 , 23 , 24 , 25 , 26 ].…”
Section: Introductionmentioning
confidence: 99%