TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Cell: In the cell, a potential difference of at least 4.5 volts is reached between at least one anode and at least one cathode at least temporarily during the production and/or use of the electrochemical cell. Preferred Method: The step of mixing is preceded by the internal pressure of the cell lowered to values of below 25000 Pa (pascal).    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithiated Mn-containing compound is a lithiated Mn-containing spinel. The lithiated Mn-containing compound is a compound of formula Li1+tM2-tO4-d (I). The anode is selected from graphite anode.d and t=0-0.4;M=metals from groups III to XII of the periodic table, where more than 60 mol.% of M is manganese.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aprotic organic solvent is selected from organic carbonates (cyclic or acyclic), di- 1-10C-alkyl ethers, di-1-4C-alkyl-2-6C-alkylene ethers, and cyclic and acyclic acetals and ketals. The organic compound is selected from compound of formula (R1)3-Si-N(R2)2 (II); compound of formula (III), preferably (IIIa) and (IIIb); and compound of formula (IV), preferably (IVa) and (IVb).R1=1-10C-alkyl, 1-10C-alkoxy, 3-10C-cycloalkyl, benzyl or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);R2=COOR8, 1-10C-alkyl, 2-10C-alkenyl, 3-10C-cycloalkyl, benzyl, or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);R3=H, COOR8, 1-10C-alkyl, 2-10C-alkenyl, 3-10C cycloalkyl, benzyl, or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);R4 and R5=H, 1-10C-alkyl, 2-10C-alkenyl, 3-10C cycloalkyl, benzyl, or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);orC(R4)2=C=O;X=absent, O, S, N-R6 or C(R4)2;R6=1-10C-alkyl, 3-10C-cycloalkyl, benzyl or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);R7=H, 1-10Calkyl, 3-10C-cycloalkyl, benzyl or 6-14C-aryl (all optionally substituted by 1-4C-alkyl, benzyl or phenyl);R8=1-4C-alkyl;n=1-3;R'1=1-4C-alkyl, 1-4C-alkoxy or phenyl;R'2=1-4C-alkyl, COOCH3, COOC2H5, 2-3C-alkenyl or phenyl;R7=H or methyl.