Characterization of N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide-based polymer electrolytes for high safety lithium batteries
Artikel i vetenskaplig tidskrift, 2013
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 x 10(-4) S cm(-1) at 0 degrees C. The ILPE exhibited good compatibility with a LiFePO4 electrode on storage and good charge-discharge performance in Li/ILPE/LiFePO4!
challenges
poly(ethylene oxide)
membrane
diffusion
Lithium batteries
conductivity
Poly(vinylidene difluoride-co-hexafluoropropylene)
stability
electrospun
li-ion batteries
lifepo4 cathode
liquid
Electrospinning
Polymer electrolyte
N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)-imide
Författare
Jae-Kwang Kim
Chalmers, Teknisk fysik, Kondenserade materiens fysik
L. Niedzicki
Politechnika Warszawska
Johan Scheers
Chalmers, Teknisk fysik, Kondenserade materiens fysik
C. R. Shin
Gyeongsang National University
D. H. Lim
Gyeongsang National University
W. Wieczorek
Politechnika Warszawska
Patrik Johansson
Chalmers, Teknisk fysik, Kondenserade materiens fysik
J. H. Ahn
Gyeongsang National University
Aleksandar Matic
Chalmers, Teknisk fysik, Kondenserade materiens fysik
Per Jacobsson
Chalmers, Teknisk fysik, Kondenserade materiens fysik
Journal of Power Sources
0378-7753 (ISSN)
Vol. 224 15 Feb. 2013 93-98Styrkeområden
Transport
Energi
Materialvetenskap
Ämneskategorier
Den kondenserade materiens fysik
DOI
10.1016/j.jpowsour.2012.09.029