Ternäre Lithium-Mischoxide, Verfahren zu deren Herstellung sowie deren Verwendung

摘要

PCT No. PCT/EP95/03842 Sec. 371 Date Jun. 30, 1997 Sec. 102(e) Date Jun. 30, 1997 PCT Filed Sep. 28, 1995 PCT Pub. No. WO96/10538 PCT Pub. Date Apr. 11, 1996Ternary lithium mixed oxides having a spinel-type crystal structure and the general formula (I) LiyMexMn2-xO4 are disclosed. In this formula (I), Me represents a metal cation from groups IIa, IIIa, Iva, IIb, IIIb, IVb, IVb, VIIb, and VIII of the Periodic Table of Elements, x is in a range between 0 and 1, and y is in a range of greater than zero and not more than 1.2. The ternary mixed lithium oxide is obtainable by reacting reaction components in the form of hydroxides and/or water-soluble metal salts dissolved in a basic aqueous medium to form a homogenous suspension of the hydroxylic reaction products, removing water and optionally further solvents from the suspension, and subjecting the dried reaction products to heat treatment by heating them to temperatures between 500 DEG C. and 900 DEG C. at a heating speed of between 1 K/min and 20 K/min. The respective mixed oxides obtained are in a form which has no phase having a radiographic effect. These mixed oxides are suitable, in particular, as cathode materials in lithium secondary batteries.