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000829009 1001_ $$0P:(DE-HGF)0$$aCao, Xia$$b0$$eCorresponding author
000829009 245__ $$aEster Modified Pyrrolidinium Based Ionic Liquids as Electrolyte Component Candidates in Rechargeable Lithium Batteries
000829009 260__ $$aWeinheim$$bWiley-VCH$$c2015
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000829009 520__ $$aRoom temperature ionic liquids (RTILs), especially pyrrolidinium based RTILs with bis(trifluoromethane-sulfonyl)imide (TFSI) as counterion, are frequently proposed as promising electrolyte component candidates thanks to their high thermal as well as high oxidation stability. In order to avoid a resource intensive experimental approach, mainly based on trial and error experiments, a computational screening method for pre-selecting suitable candidate molecules was adopted and three homologous series compounds were synthesized by modifying the cation structure of pyrrolidinium RTILs. The obtained high purity RTILs: methyl-methylcarboxymethyl pyrrolidinium TFSI (MMMPyrTFSI), methyl-ethylcarboxymethyl pyrrolidinium TFSI (MEMPyrTFSI) and methylpropylcarboxymethyl pyrrolidinium TFSI (MPMPyrTFSI) revealed excellent thermal stabilities higher than 300 °C. Furthermore, MMMPyrTFSI and MPMPyrTFSI exhibit high oxidation stability up to 5.4 V vs. Li/Li+. No aluminum corrosion of current collector was observed at 5 V vs. Li/Li+. In addition to that, these RTILs display a superior salt (LiTFSI) solubility (3.0–3.5 M), compared to the unmodified RTIL 1-butyl-1-methylpyrrolidinium TFSI (Pyr14TFSI) (1.5–2.0 M) at room temperature. All these properties make novel ester modified RTILs promising and interesting candidates for application in rechargeable lithium batteries.
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000829009 7001_ $$0P:(DE-HGF)0$$aRöser, Stephan$$b1
000829009 7001_ $$0P:(DE-Juel1)167131$$aRezaei Rad, Babak$$b2$$ufzj
000829009 7001_ $$0P:(DE-Juel1)169319$$aHe, Xin$$b3$$ufzj
000829009 7001_ $$0P:(DE-HGF)0$$aStreipert, Benjamin$$b4
000829009 7001_ $$0P:(DE-Juel1)166130$$aWinter, Martin$$b5$$eCorresponding author$$ufzj
000829009 7001_ $$0P:(DE-Juel1)171204$$aCekic-Laskovic, Isidora$$b6$$ufzj
000829009 773__ $$0PERI:(DE-600)1481139-x$$a10.1002/zaac.201500554$$gVol. 641, no. 14, p. 2536 - 2542$$n14$$p2536 - 2542$$tZeitschrift für anorganische und allgemeine Chemie$$v641$$x0044-2313$$y2015
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