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

Jae-Kwang Kim (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; L. Niedzicki ; Johan Scheers (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; C. R. Shin ; D. H. Lim ; W. Wieczorek ; Patrik Johansson (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; J. H. Ahn ; Aleksandar Matic (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Per Jacobsson (Institutionen för teknisk fysik, Kondenserade materiens fysik)
Journal of Power Sources (0378-7753). Vol. 224 (2013), 15 Feb. 2013, p. 93-98.
[Artikel, refereegranskad vetenskaplig]

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!

Nyckelord: Polymer electrolyte, Electrospinning, N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)-imide, Poly(vinylidene difluoride-co-hexafluoropropylene), Lithium batteries, li-ion batteries, poly(ethylene oxide), lifepo4 cathode, liquid, membrane, electrospun, stability, conductivity, challenges, diffusion



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Denna post skapades 2013-02-12. Senast ändrad 2016-09-14.
CPL Pubid: 173433

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens fysik (1900-2015)

Ämnesområden

Energi
Materialvetenskap
Transport
Den kondenserade materiens fysik

Chalmers infrastruktur