skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Decoupling of Ionic Trasport from Segmental Relaxation in Polymer Electrolytes

Abstract

We present detailed studies of the relationship between ionic conductivity and segmental relaxation in polymer electrolytes. The analysis shows that the ionic conductivity can be decoupled from segmental dynamics and the strength of the decoupling correlates with the fragility but not with the glass transition temperature. These results call for a revision of the current picture of ionic transport in polymer electrolytes. We relate the observed decoupling phenomenon to frustration in packing of rigid polymers, where the loose local structure is also responsible for the increase in their fragility.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1096340
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 108; Journal Issue: 8
Country of Publication:
United States
Language:
English

Citation Formats

Wang, Yangyang, Agapov, Alexander L, Fan, Fei, Hong, Kunlun, Yu, Xiang, Mays, Jimmy, and Sokolov, Alexei P. Decoupling of Ionic Trasport from Segmental Relaxation in Polymer Electrolytes. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.108.088303.
Wang, Yangyang, Agapov, Alexander L, Fan, Fei, Hong, Kunlun, Yu, Xiang, Mays, Jimmy, & Sokolov, Alexei P. Decoupling of Ionic Trasport from Segmental Relaxation in Polymer Electrolytes. United States. doi:10.1103/PhysRevLett.108.088303.
Wang, Yangyang, Agapov, Alexander L, Fan, Fei, Hong, Kunlun, Yu, Xiang, Mays, Jimmy, and Sokolov, Alexei P. Sun . "Decoupling of Ionic Trasport from Segmental Relaxation in Polymer Electrolytes". United States. doi:10.1103/PhysRevLett.108.088303.
@article{osti_1096340,
title = {Decoupling of Ionic Trasport from Segmental Relaxation in Polymer Electrolytes},
author = {Wang, Yangyang and Agapov, Alexander L and Fan, Fei and Hong, Kunlun and Yu, Xiang and Mays, Jimmy and Sokolov, Alexei P},
abstractNote = {We present detailed studies of the relationship between ionic conductivity and segmental relaxation in polymer electrolytes. The analysis shows that the ionic conductivity can be decoupled from segmental dynamics and the strength of the decoupling correlates with the fragility but not with the glass transition temperature. These results call for a revision of the current picture of ionic transport in polymer electrolytes. We relate the observed decoupling phenomenon to frustration in packing of rigid polymers, where the loose local structure is also responsible for the increase in their fragility.},
doi = {10.1103/PhysRevLett.108.088303},
journal = {Physical Review Letters},
number = 8,
volume = 108,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2012},
month = {Sun Jan 01 00:00:00 EST 2012}
}