CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); C01P 2002/52 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] | 8 Claims |
1. A process for modifying an electrode active material of formula Li1+xTM1−xO2,
wherein TM is a combination of metals of formula (I a) or (I b)
(NiaCobMnc)1−dM1d (I a)
wherein a+b+c=1,
a is in the range of from 0.75 to 0.95,
b is in the range of from 0.025 to 0.2,
c is in the range of from 0.025 to 0.2,
d is in the range of from zero to 0.1,
M1 is at least one of Ba, Mg, Al, W, Mo, Ti, and Zr, and
x is in the range of from −0.05 to +0.2, and
(NiaCobAle)1−dM2d (I b)
wherein a+b+c=1,
a is in the range of from 0.75 to 0.95,
b is in the range of from 0.025 to 0.2,
e is in the range of from 0.025 to 0.2,
d is in the range of from zero to 0.1, and
M2 is at least one of W, Mo, Ti, and Zr,
wherein said process comprises:
(a) treating said Li1+xTM1−xO2 with an aqueous medium with a pH value in the range of at least 5 to up to 14, and
(b) removing said aqueous medium from treated Li1+xTM1−xO2 by way of a solid-liquid separation, and
wherein the treating (a) and the removing (b) are carried out simultaneously.
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