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Cleaner solvents for sustainable chemistry

Publication: Ionic Liquid based polymer electrolytes for Li-ion Batteries

 Title : Ionic semi-interpenetrating networks as a new approach for highly conductive and stretchable polymer materials.

Reference : A. S. Shaplov et al., Journal of Materials Chemistry A, 07 February 2015, Vol. 3, Issue 5, page 2188 to 2198.

Comment :  This research article deals with the development of polymer electrolyte films based on ionic semi-interpenetrating polymer networks (semi-IPNs). Such materials involve the polymerization of Ionic Liquid-like monomers with other copolymers. When filled with Ionic Liquids and Lithium salt, the polymer electrolyte ionic conductivity is 1.3x10-4mS/cm (@ 25°C) with an electrochemical window of 4.9V vs. Li/Li+, a tensile strength of 80kPa and an elongation of 60%. Lithium polymer flexible cells were assembled showing this semi-IPN architecture is a promising candidate for stretchable electronics.

The products used in this study [potassium bis(fluorosulfonyl)imide, ref. S014; N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide, ref. PYR1333A; lithium bis(trifluoromethylsulfonyl)imide, ref S001] are available from Solvionic.

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