Characterization of N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide-based polymer electrolytes for high safety lithium batteries

Jae-Kwang Kim , Leszek Niedzicki , Johan Scheers , Cho-Rong Shin , Du-Hyun Lim , Władysław Wieczorek , Patrik Johansson , Jou-Hyeon Ahn , Aleksandar Matic , Per Jacobsson


Poly(vinylidene difluoride-co-hexafluoropropylene) (PVdF-HFP) membrane was prepared by electrospinning. The membranes served as host matrices for the preparation of ionic liquid-based polymer electrolytes (ILPEs) by activation with non-volatile, highly thermally stable, and safe room temperature ionic liquid (RTIL) electrolytes; N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide (Py14TFSI) complexed with 1 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). In this work, the first combination of electrospun PVdF-HFP fiber polymer host and pyrrolidinium-based ionic electrolyte was employed for highly stable lithium batteries. The ILPE exhibited low Li+–TFSI coordination, low crystallinity, high thermal stability, high electrochemical stability, and high ionic conductivity with a maximum of 1.1 × 10−4 S cm−1 at 0 °C. The ILPE exhibited good compatibility with a LiFePO4 electrode on storage and good charge–discharge performance in Li/ILPE/LiFePO4 cells at room temperature, delivering specific capacities of 143 and 115 mA h g−1 at 0.1 and 1 C-rates. The ILPE also exhibited stable cycle properties and have therefore been demonstrated to be suitable for lithium battery applications.
Author Jae-Kwang Kim - [Chalmers University of Technology]
Jae-Kwang Kim,,
, Leszek Niedzicki (FC / CICSST)
Leszek Niedzicki,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Johan Scheers - [Chalmers University of Technology]
Johan Scheers,,
, Cho-Rong Shin - [Gyeongsang National University]
Cho-Rong Shin,,
, Du-Hyun Lim - [Gyeongsang National University]
Du-Hyun Lim,,
, Władysław Wieczorek (FC / CICSST)
Władysław Wieczorek,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Patrik Johansson - [Chalmers University of Technology]
Patrik Johansson,,
, Jou-Hyeon Ahn - [Gyeongsang National University]
Jou-Hyeon Ahn,,
, Aleksandar Matic - [Chalmers University of Technology]
Aleksandar Matic,,
, Per Jacobsson - [Chalmers University of Technology]
Per Jacobsson,,
Journal seriesJournal of Power Sources, ISSN 0378-7753
Issue year2013
Publication size in sheets0.5
Keywords in Englishpolymer electrolyte ; electrospinning ; N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide ; poly(vinylidene difluoride-cohexafluoropropylene) ; lithium batteries
ASJC Classification2208 Electrical and Electronic Engineering; 1606 Physical and Theoretical Chemistry; 2102 Energy Engineering and Power Technology; 2105 Renewable Energy, Sustainability and the Environment
Languageen angielski
journalofpowersources_2013_224_93.pdf 693.83 KB
Score (nominal)45
Score sourcejournalList
ScoreMinisterial score = 40.0, 17-08-2020, ArticleFromJournal
Ministerial score (2013-2016) = 45.0, 17-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 50; WoS Citations = 52; GS Citations = 23.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 2.111; WoS Impact Factor: 2013 = 5.211 (2) - 2013=5.257 (5)
Citation count*23 (2015-03-26)
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