Elastic and dynamic properties of a poly(propylene glycol)-lithium perchlorate electrolyte: a brillouin scattering study

1990 ◽  
Vol 23 (1) ◽  
pp. 163-167 ◽  
Author(s):  
J. Sandahl ◽  
L. Boerjesson ◽  
J. R. Stevens ◽  
L. M. Torell
Keyword(s):  
Propylene Glycol ◽  
Brillouin Scattering ◽  
Dynamic Properties ◽  
Lithium Perchlorate ◽  
Scattering Study ◽  
Poly Propylene

Brillouin scattering study of glass-forming propylene glycol

2006 ◽  
Vol 442 (1-2) ◽  
pp. 379-382 ◽  
Author(s):  
S. Tsukada ◽  
Y. Ike ◽  
J. Kano ◽  
S. Kojima
Keyword(s):  
Propylene Glycol ◽  
Brillouin Scattering ◽  
Glass Forming ◽  
Scattering Study

A comparison of acetone and poly(propylene glycol) as solvents for lithium triflate and lithium perchlorate

1991 ◽  
Vol 69 (12) ◽  
pp. 1980-1984 ◽  
Author(s):  
James R. Stevens ◽  
Per Jacobsson
Keyword(s):  
Propylene Glycol ◽  
Ion Pairs ◽  
Lithium Perchlorate ◽  
Lithium Triflate ◽  
Free Ions ◽  
Lower Dielectric Constant ◽  
Current Controversy ◽  
Raman Modes ◽  
Poly Propylene ◽  
Key Words Acetone

Solutions of LiCF3SO3 and LiClO4 in acetone and in poly(propylene glycol) (PPG 400 and PPG 4000) have been compared by studying the nondegenerate, symmetric stretch (A1,SO3) and (A1,ClO4) Raman modes. The Raman spectra contain bands due to the symmetric stretching motion of the "free" anion and due to the symmetric stretching motion of anions in ion aggregates. It is concluded that "free" ions, ion pairs, triplets, and aggregates are present. Although PPG has a much lower dielectric constant, it is a better solvent for these salts than the dipolar aprotic acetone. These findings have ramifications on the current controversy of whether "free" ions are present at all in polyether–salt complexes such as PPG 4000/LiCF3SO3. Key words: acetone, poly(propylene glycol), lithium triflate, lithium perchlorate, Raman.

Raman and Brillouin scattering of LiClO4complexed in poly(propylene‐glycol)

1988 ◽  
Vol 64 (4) ◽  
pp. 2038-2043 ◽  
Author(s):  
S. Schantz ◽  
L. M. Torell ◽  
J. R. Stevens
Keyword(s):  
Propylene Glycol ◽  
Brillouin Scattering ◽  
Poly Propylene
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