Process for manufacturing galvanic elements with liquid organic electrolytes

摘要

Production of a galvanic element having a lithium intercalcating electrode comprises use of an electrolyte containing a carbonate compound having hydrocarbon chains of no greater than 4C atoms in length with the two chains differing by 1-3 CH2 groups. A process for the production of a galvanic element (I) with a liquid organic electrolyte, that contains a separator/electrode composite comprising at least one lithium intercalcating electrode, in which polymer-insoluble electrochemically active materials are dispersed, is characterized in that the electrolyte comprises 2-15 wt.% of a carbon-hydrogen-oxygen compound (carbonate) having a central carbon atom that is bonded to one oxygen atom by a double bond and singly bonded to two oxygen atoms whereby the singly bonded oxygen atoms are not saturated by other atoms or groups and are bonded to hydrocarbon chains of no greater than 4C atoms in length and the two chains differ by 1-3 CH2 groups. The separator/electrode composite is impregnated with the electrolyte, cut and inserted in a housing. An Independent claim is included for the resulting galvanic element (I).