Understanding of Lithium 4,5-Dicyanoimidazolate-Poly(ethylene oxide) System: Influence of the Architecture of the Solid Phase on the Conductivity

Piotr Jankowski , Grażyna Żukowska , Maciej Dranka , Maciej Marczewski , Andrzej Ostrowski , Jędrzej Korczak , Leszek Niedzicki , Aldona Zalewska , Władysław Wieczorek

Abstract

Solid polymer electrolytes (SPEs) with high lithium conductivity are very beneficial as a safe material for lithium battery applications. Herein we present new set of SPEs based on lithium 2-trifluoromethyl-4,5-dicyanoimidazolate (LiTDI) with wide range of ether oxygen to lithium molar ratios. The phase composition was characterized in detail with thermal, diffraction, and spectroscopic techniques, and its influence on conductivity behavior was examined. Two detected crystalline phases of LiTDI–poly(ethylene oxide) (PEO) were simulated with computational methods. The obtained results allowed insight into the structure of these electrolytes and helped us to understand on the molecular level factors influencing electrochemical properties and phase behavior. It was shown that ability to form a low-melting phase can be used to lower the temperature window of operation. That made it possible to keep such SPEs amorphous at 30 °C during 80 days. The thermal stability of the samples was checked to prove the safety of the electrolytes
Author Piotr Jankowski KChNTCS
Piotr Jankowski,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Grażyna Żukowska KChNTCS
Grażyna Żukowska,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Maciej Dranka KChNTCS
Maciej Dranka,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Maciej Marczewski KChNTCS
Maciej Marczewski,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Andrzej Ostrowski KChNTCS
Andrzej Ostrowski,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Jędrzej Korczak KChNTCS
Jędrzej Korczak,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Leszek Niedzicki KChNTCS
Leszek Niedzicki,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Aldona Zalewska KChNTCS
Aldona Zalewska,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Władysław Wieczorek KChNTCS
Władysław Wieczorek,,
- Chair Of Inorganic Chemistry And Solid State Technology
Journal seriesThe Journal of Physical Chemistry Part C: Nanomaterials, Interfaces and Hard Matter, ISSN 1932-7447
Issue year2016
Vol120
No41
Pages23358-23367
Publication size in sheets0.5
DOIDOI:10.1021/acs.jpcc.6b07058
URL http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b07058
Languageen angielski
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wdpb_publikacje_pliki_plik_publikacja_2939_org.pdf (file archived - login or check accessibility on faculty) wdpb_publikacje_pliki_plik_publikacja_2939_org.pdf 1.89 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.536 (2) - 2016=4.796 (5)
Citation count*0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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