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 93-98

Styrkeområden

Transport

Energi

Materialvetenskap

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1016/j.jpowsour.2012.09.029