GALVANIC CELL HAVING A LITHIUM METAL OR AN ALLOY COMPRISING A LITHIUM METAL AS ANODE MATERIAL AND AN ELECTROLYTE HAVING LITHIUM BIS(OXALATO)BORATE AND AT LEAST ONE OTHER LITHIUM COMPLEX SALT

摘要

The invention relates to a galvanic cell having a lithium metal or an alloy comprising a lithium metal as anode material, having an electrolyte comprising lithium bis(oxalato)borate and at least one other lithium complex salt of the formulae (I) and/or (II) in an aprotic solvent or solvent mixture, wherein the ratio of the compound (I) and/or (II) in the conducting salt equals 0.01 to 20 mol % and X, Y and Z in the formulae (I, II) is a bridge having two oxygen atoms bonded to the boron or phosphor atom, selected from (Formula (III)) wherein (i) Y1 and Y2 together = O, n = 0 and Y3 and Y4 are independently of one another H or an alkyl remnant having 1 to 5 C atoms, or (ii) Y1, Y2, Y3, Y4 independently of one another are each OR (R= alkyl remnant having 1 to 5 C atoms), H or an alkyl remnant R1, R2 having 1 to 5 C atoms, and wherein n = 0 or 1.