Ionic association in liquid (polyether–AlO–LiClO) composite electrolytes

Sol–gel preparation of a di-ureasil electrolyte doped with lithium perchlorate

“…1(b) and Table 2). The 930-931 cm -1 band, which remains at the same position in all the FT-Raman spectra irrespective of the salt concentration, is assigned to "free" ions [23][24][25][26][27][28][29][30]. The shoulder at 924-926 cm -1 , present in the FT-Raman spectra of all the samples analyzed, has only been reported in the literature by Brooker et al [30] who assigned it to a 2ν 2 ClO 4 mode.…”

“…The weak event located at 909- ). By this affirmation we mean that there is at least one direct coordination of the Li + ion to one perchlorate oxygen [23][24][25][26][27][28][29][30]. The broad higher frequency component at 941 cm -1 found at n = 0.5 indicates the presence of higher order ionic aggregates [24,28].…”

“…This anion has a tetrahedral symmetry and the nine vibrational degrees freedoms are distributed into four normal modes: Upon coordination, the ν 1 (A 1 ) band was found to shift to higher wavenumbers [23][24][25][26][27][28][29][30].…”

Influence of macromolecular additives on transport properties of lithium organic electrolytes

“…[26]) or ion-solvent (e.g. [27][28][29]) interactions. In the studied systems, the NH stretching vibration spectral region is of main interest.…”

Structure and ionic conductivity of ionic liquid embedded PEO- LiCF3SO3 polymer electrolyte

“…Thus, the ionic conductivity is greatly affected by the nature of the ionic species present in a polymer electrolyte. [28][29][30] Neutral ion pairs or neutral multiplets (as they carry no charge) do not contribute to the conductivity and thus the number of carriers available for conduction is reduced.…”