H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 10/26 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2240605
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 an effective content of at least one partially fluorinated carbamate of general formula (I) Image 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 saturated with C1-C3-alkyl and the ring carbon atoms possibly likewise carrying Cl- 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 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 may or may not be monosubstituted or polysubstituted with C1-C6-alkyl.
Appel Wolfgang
Pasenok Sergej
Fetherstonhaugh & Co.
Hoechst Research & Technology Deutschland Gmbh & Co. Kg
Solvay Fluor Und Derivate Gmbh
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