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000894713 1001_ $$00000-0001-8164-3152$$aDörr, Tobias S.$$b0
000894713 245__ $$aAn Ambient Temperature Electrolyte with Superior Lithium Ion Conductivity based on a Self-Assembled Block Copolymer
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000894713 520__ $$aIn searching for polymer-based electrolytes with improved performance for lithium ion and lithium metal batteries, we studied block copolymer electrolytes with high amounts of bis(trifluoromethane)sulfonimide lithium obtained by macromolecular co-assembly of a poly(isoprene)-block-poly(styrene)-block-poly(ethylene oxide) and the salt from tetrahydrofuran. Particularly, an ultra-short poly(ethylene oxide) block of 2100 g mol−1 was applied, giving rise to 2D continuous lamellar microstructures. The macroscopic stability was ensured with major blocks from poly(isoprene) and poly(styrene), which separated the ionic conductive PEO/salt lamellae. Thermal annealing led to high ionic conductivities of 1.4 mS cm−1 at 20 °C with low activation energy and a superior lithium ion transference number of 0.7, accompanied by an improved mechanical stability (storage modulus of up to 107 Pa). With high Li:O ratios >1, we show a viable concept to achieve fast Li+ transport in block copolymers (BCP), decoupled from slow polymer relaxation.
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000894713 7001_ $$0P:(DE-Juel1)167584$$aPelz, Alexander$$b1
000894713 7001_ $$0P:(DE-HGF)0$$aZhang, Peng$$b2
000894713 7001_ $$00000-0003-2951-1704$$aKraus, Tobias$$b3
000894713 7001_ $$0P:(DE-Juel1)166130$$aWinter, Martin$$b4
000894713 7001_ $$0P:(DE-Juel1)176785$$aWiemhöfer, Hans-Dieter$$b5$$eCorresponding author
000894713 773__ $$0PERI:(DE-600)1478547-X$$a10.1002/chem.201801521$$gVol. 24, no. 32, p. 8061 - 8065$$n32$$p8061 - 8065$$tChemistry - a European journal$$v24$$x0947-6539$$y2018
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