Composite polyether electrolytes with Lewis acid type additives

Władysław Wieczorek , Aldona Zalewska , D. Raducha , Zbigniew Florjańczyk , J. R. Stevens

Abstract

The effects of AlBr3, AlCl3, and α-Al2O3 on the conductivity and ultrastructure of electrolytes based on LiClO4 and polyethers have been studied. The results obtained are analyzed in terms of Lewis acid?base interactions occurring between various chemical moieties within these composite systems. It is shown that aluminum halides form complexes with ClO4- anion acting as plasticizing agents for polyether matrixes. However, aluminum halides interact also with polyethers leading to the formation of polyether?aluminum halide complexes, thus stiffening polymeric electrolytes. It is shown that for low additive concentrations the addition of Lewis acid results in a decrease in the degree of crystallinity of poly(ethylene oxide)-based electrolytes; this is followed by an increase in the conductivity. A significant increase in conductivity was obtained at 0 and 25 °C for samples containing up to 25 mass \% of aluminum halides or α-Al2O3. For samples containing more than 30 mass \% of the additive, the effect of the stiffening of polymer hosts dominates (and is confirmed by the increase in Tg values observed from DSC experiments) and the conductivity decreases.
Author Władysław Wieczorek KChNTCS
Władysław Wieczorek,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Aldona Zalewska KChNTCS
Aldona Zalewska,,
- Chair Of Inorganic Chemistry And Solid State Technology
, D. Raducha
D. Raducha,,
-
, Zbigniew Florjańczyk KChTP
Zbigniew Florjańczyk,,
- Chair Of Polymer Chemistry And Technology
, J. R. Stevens
J. R. Stevens,,
-
Journal seriesJournal of Physical Chemistry B, ISSN 1520-6106
Issue year1998
Vol102
No2
Pages352-360
DOIDOI:10.1021/jp972727o
URL http://dx.doi.org/10.1021/jp972727o
Languageen angielski
File
JPhysChemB_352.pdf 195.98 KB
Score (nominal)35
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2006 = 4.115 (2) - 2007=4.475 (5)
Citation count*84 (2015-05-09)
Cite
Share Share

Get link to the record
msginfo.png


* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back