ACTIVE CATHODE MATERIAL AND ITS USE IN RECHARGEABLE ELECTROCHEMICAL CELLS

摘要

The present invention relates to an active cathode material of the general formula (I) MxNiaM1bM2c02 (I) in which the variables are each defined as follows: M is an alkali metal, M1 is V, Cr, Mn, Fe or Co, M2 is Ge, Sn, Ti or Zr, x is in the range from 0.7 to 1.3, a is in the range from 0.15 to 0.4, b is in the range from 0.2 to 0.7, c is in the range from 0.15 to 0.4, wherein a+b+c=1. The present invention further relates to an electrode material comprising said active cathode material, to electrodes produced from or using said electrode material and to a rechargeable electrochemical cell comprising at least one electrode. The present invention further relates to a process for preparing said active cathode material of the general formula (I).

主权项

1. An active cathode material of the general formula (I):
MxNiaM1bM2cO2  (I), in which the variables are each defined as follows:
M is Na,M1 is V, Cr, Mn, Fe or Co,M2 is Ge, Sn, Ti or Zr,x is in the range from 0.7 to 1.3,a is in the range from 0.15 to 0.4,b is in the range from 0.2 to 0.7,c is in the range from 0.15 to 0.4, wherein a+b+c=1.