| 摘要 |
Electrolyte systems for lithium batteries of increased safety comprise at least one lithium-containing conducting salt and at least one electrolyte fluid and, according to the invention, are defined by at least one partially fluorinated carbamate of general formula (I) where R1 and R2 independently of one another or identical or different, linear C1-C6-alkyl, branched C3-C6-alkyl, C3-C7-cycloalkyl or R1 and R2 directly or via one or more additional nitrogen and/or oxygen atoms are linked to form a ring having from 3 to 7 ring members, and the additional nitrogen atoms present in the ring being substituted with C1-C3-alkyl and the ring carbon atoms optionally carrying C1-C3-alkyl, with the option of one or more hydrogen atoms in the radicals R1 and R2 being replaced by fluorine atoms, R3 is a partially fluorinated or perfluorinated straight-chain alkyl group having from 1 to 6 carbon atoms, is a partially fluorinated or perfluorinated branched alkyl group having from 3 to 6 carbon atoms or a partially fluorinated cycloalkyl group having from 3 to 7 carbon atoms, which optionally be monosubstituted or polysubstituted with C1-C6-alkyl.
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