| 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, accor ding to the invention, are defined by an effective content of at least one partially flu orinated carbamate of general formula (I) (see fig 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 fr om 3 to 7 ring members, and the additional nitrogen atoms present in the ring being saturated with C1-C3-alkyl and the ring carbon atoms possibly likewise carrying C1-C3-alkyl, with the possibility of one or more hydrogen atoms in the radicals R1 and R2 being replaced by fluorine atoms, R3 is a partially fluorinated or perfluorin ated straight-chain alkyl group having from 1 to 6 carbon atoms, is a partially fluor inated or perfluorinated branched alkyl group having from 3 to 6 carbon atoms or a part ially fluorinated cycloalkyl group having from 3 to 7 carbon atoms, which may or may n ot be monosubstituted or polysubstituted with C1-C6-alkyl. |
