Details

Autor(en) / Beteiligte

• Wang, Yangyang
• Agapov, Alexander L
• Fan, Fei
• Hong, Kunlun
• Yu, Xiang
• Mays, Jimmy
• Sokolov, Alexei P

Titel

Decoupling of ionic transport from segmental relaxation in polymer electrolytes

Ist Teil von

• Physical review letters, 2012-02, Vol.108 (8), p.088303-088303, Article 088303

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2012

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• 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.